/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/array-tiling/rewnifrev.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:02:51,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:02:51,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:02:51,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 19:02:51,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:02:51,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:02:51,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:02:51,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:02:51,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:02:51,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:02:51,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:02:51,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:02:51,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:02:51,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:02:51,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:02:51,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:02:51,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 19:02:51,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:02:51,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:02:51,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:02:51,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 19:02:51,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:02:51,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:02:51,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:02:51,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:02:51,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:02:51,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:02:51,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:02:51,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:02:51,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:02:51,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:02:51,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:02:51,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:02:51,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:02:51,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:02:51,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:02:51,535 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:02:51,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:02:51,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:02:51,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:02:51,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:02:51,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:02:51,787 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:02:51,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev.c [2022-01-31 19:02:51,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66cba888/e54e3d7ecc2743eca4248b8cb8d1781e/FLAGaab3b8009 [2022-01-31 19:02:52,164 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:02:52,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev.c [2022-01-31 19:02:52,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66cba888/e54e3d7ecc2743eca4248b8cb8d1781e/FLAGaab3b8009 [2022-01-31 19:02:52,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66cba888/e54e3d7ecc2743eca4248b8cb8d1781e [2022-01-31 19:02:52,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:02:52,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:02:52,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:02:52,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:02:52,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:02:52,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1066000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52, skipping insertion in model container [2022-01-31 19:02:52,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:02:52,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:02:52,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev.c[400,413] [2022-01-31 19:02:52,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:02:52,336 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:02:52,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev.c[400,413] [2022-01-31 19:02:52,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:02:52,353 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:02:52,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52 WrapperNode [2022-01-31 19:02:52,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:02:52,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:02:52,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:02:52,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:02:52,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:02:52,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:02:52,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:02:52,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:02:52,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (1/1) ... [2022-01-31 19:02:52,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:02:52,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:02:52,401 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) [2022-01-31 19:02:52,403 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 [2022-01-31 19:02:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:02:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:02:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:02:52,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 19:02:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 19:02:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:02:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:02:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:02:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:02:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:02:52,436 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 19:02:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 19:02:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 19:02:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 19:02:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:02:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 19:02:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:02:52,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:02:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:02:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:02:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:02:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:02:52,487 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:02:52,488 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:02:52,577 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:02:52,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:02:52,581 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 19:02:52,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:02:52 BoogieIcfgContainer [2022-01-31 19:02:52,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:02:52,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:02:52,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:02:52,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:02:52,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:02:52" (1/3) ... [2022-01-31 19:02:52,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8748d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:02:52, skipping insertion in model container [2022-01-31 19:02:52,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:02:52" (2/3) ... [2022-01-31 19:02:52,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8748d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:02:52, skipping insertion in model container [2022-01-31 19:02:52,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:02:52" (3/3) ... [2022-01-31 19:02:52,587 INFO L111 eAbstractionObserver]: Analyzing ICFG rewnifrev.c [2022-01-31 19:02:52,590 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:02:52,590 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:02:52,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:02:52,648 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 [2022-01-31 19:02:52,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:02:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:02:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 19:02:52,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:52,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:52,673 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:52,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash 890576946, now seen corresponding path program 1 times [2022-01-31 19:02:52,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:52,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797073757] [2022-01-31 19:02:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:52,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:52,736 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:52,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:52,820 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:52,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797073757] [2022-01-31 19:02:52,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [797073757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:52,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:52,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:02:52,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846665506] [2022-01-31 19:02:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:52,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:02:52,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:52,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:02:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:02:52,844 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:52,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:52,884 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-01-31 19:02:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:02:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 19:02:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:52,890 INFO L225 Difference]: With dead ends: 43 [2022-01-31 19:02:52,890 INFO L226 Difference]: Without dead ends: 22 [2022-01-31 19:02:52,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:02:52,894 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:52,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:02:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-31 19:02:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-31 19:02:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:02:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-01-31 19:02:52,932 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2022-01-31 19:02:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:52,932 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-01-31 19:02:52,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-01-31 19:02:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 19:02:52,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:52,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:52,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:02:52,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:52,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2057036315, now seen corresponding path program 1 times [2022-01-31 19:02:52,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:52,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623336154] [2022-01-31 19:02:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:52,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:52,936 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:53,021 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:53,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623336154] [2022-01-31 19:02:53,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [623336154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:53,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:53,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 19:02:53,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552055358] [2022-01-31 19:02:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:53,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 19:02:53,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 19:02:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 19:02:53,023 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:53,078 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-01-31 19:02:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 19:02:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 19:02:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:53,080 INFO L225 Difference]: With dead ends: 41 [2022-01-31 19:02:53,080 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 19:02:53,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 19:02:53,084 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:53,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:02:53,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 19:02:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-31 19:02:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:02:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-01-31 19:02:53,090 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2022-01-31 19:02:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:53,090 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-01-31 19:02:53,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-01-31 19:02:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 19:02:53,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:53,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:53,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:02:53,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 222717792, now seen corresponding path program 1 times [2022-01-31 19:02:53,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:53,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251239697] [2022-01-31 19:02:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:53,113 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:53,113 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:53,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:53,118 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:53,189 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:53,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251239697] [2022-01-31 19:02:53,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1251239697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:53,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:53,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:02:53,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248980042] [2022-01-31 19:02:53,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:53,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:02:53,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:53,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:02:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:02:53,190 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:53,250 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-01-31 19:02:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 19:02:53,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-01-31 19:02:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:53,252 INFO L225 Difference]: With dead ends: 42 [2022-01-31 19:02:53,252 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 19:02:53,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:02:53,253 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:53,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:02:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 19:02:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-01-31 19:02:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:02:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-01-31 19:02:53,260 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2022-01-31 19:02:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:53,261 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-01-31 19:02:53,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-01-31 19:02:53,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 19:02:53,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:53,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:53,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:02:53,262 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:53,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash -936092263, now seen corresponding path program 1 times [2022-01-31 19:02:53,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:53,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211267779] [2022-01-31 19:02:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:53,271 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:53,271 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:53,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:53,273 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:53,517 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:53,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211267779] [2022-01-31 19:02:53,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211267779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:53,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:53,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 19:02:53,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758222721] [2022-01-31 19:02:53,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:53,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 19:02:53,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 19:02:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:02:53,521 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:53,666 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-01-31 19:02:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 19:02:53,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-01-31 19:02:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:53,667 INFO L225 Difference]: With dead ends: 39 [2022-01-31 19:02:53,667 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 19:02:53,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:02:53,669 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:53,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 63 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:02:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 19:02:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-01-31 19:02:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:02:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-01-31 19:02:53,675 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2022-01-31 19:02:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:53,676 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-01-31 19:02:53,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:02:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-01-31 19:02:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 19:02:53,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:53,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:53,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:02:53,677 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash 403298896, now seen corresponding path program 1 times [2022-01-31 19:02:53,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:53,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703121539] [2022-01-31 19:02:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:53,680 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:53,680 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:53,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:53,681 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 19:02:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:53,852 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:53,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703121539] [2022-01-31 19:02:53,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1703121539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:53,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:53,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 19:02:53,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316872579] [2022-01-31 19:02:53,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:53,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 19:02:53,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:53,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 19:02:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:02:53,854 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:02:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:54,059 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-01-31 19:02:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:02:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-01-31 19:02:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:54,067 INFO L225 Difference]: With dead ends: 47 [2022-01-31 19:02:54,068 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 19:02:54,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:02:54,071 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:54,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 89 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:02:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 19:02:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2022-01-31 19:02:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:02:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-01-31 19:02:54,083 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 30 [2022-01-31 19:02:54,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:54,083 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-01-31 19:02:54,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:02:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-01-31 19:02:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 19:02:54,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:54,084 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:54,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 19:02:54,085 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash -443633657, now seen corresponding path program 2 times [2022-01-31 19:02:54,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:54,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473280472] [2022-01-31 19:02:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:54,089 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:54,089 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:54,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:54,090 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 19:02:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 19:02:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:54,191 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:54,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473280472] [2022-01-31 19:02:54,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [473280472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:54,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:54,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 19:02:54,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816026597] [2022-01-31 19:02:54,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:54,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 19:02:54,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 19:02:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-31 19:02:54,193 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:02:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:54,303 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-01-31 19:02:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 19:02:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2022-01-31 19:02:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:54,307 INFO L225 Difference]: With dead ends: 82 [2022-01-31 19:02:54,307 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 19:02:54,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:02:54,310 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:54,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 35 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:02:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 19:02:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-01-31 19:02:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:02:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2022-01-31 19:02:54,328 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2022-01-31 19:02:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:54,329 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2022-01-31 19:02:54,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:02:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2022-01-31 19:02:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 19:02:54,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:54,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:54,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 19:02:54,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1332021118, now seen corresponding path program 3 times [2022-01-31 19:02:54,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:54,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582850094] [2022-01-31 19:02:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:54,337 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:54,337 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:54,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:54,338 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:02:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:02:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:54,547 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:54,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582850094] [2022-01-31 19:02:54,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [582850094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:54,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:54,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:02:54,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528323089] [2022-01-31 19:02:54,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:54,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:02:54,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:02:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:02:54,549 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:02:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:54,921 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2022-01-31 19:02:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:02:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-01-31 19:02:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:54,922 INFO L225 Difference]: With dead ends: 58 [2022-01-31 19:02:54,922 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 19:02:54,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:02:54,923 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:54,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 94 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:02:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 19:02:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2022-01-31 19:02:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 42 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:02:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2022-01-31 19:02:54,935 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 42 [2022-01-31 19:02:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:54,936 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2022-01-31 19:02:54,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:02:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-01-31 19:02:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-31 19:02:54,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:54,941 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:54,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 19:02:54,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1467972665, now seen corresponding path program 4 times [2022-01-31 19:02:54,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:54,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996215833] [2022-01-31 19:02:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:54,945 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:54,946 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:54,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:54,946 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 19:02:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:02:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 19:02:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:55,025 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:55,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996215833] [2022-01-31 19:02:55,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1996215833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:55,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:55,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 19:02:55,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380074915] [2022-01-31 19:02:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:55,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 19:02:55,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 19:02:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:02:55,026 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:02:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:55,193 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2022-01-31 19:02:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 19:02:55,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50 [2022-01-31 19:02:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:55,194 INFO L225 Difference]: With dead ends: 102 [2022-01-31 19:02:55,194 INFO L226 Difference]: Without dead ends: 59 [2022-01-31 19:02:55,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:02:55,195 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:55,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 47 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:02:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-31 19:02:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2022-01-31 19:02:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 46 states have internal predecessors, (48), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:02:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2022-01-31 19:02:55,204 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 50 [2022-01-31 19:02:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:55,204 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2022-01-31 19:02:55,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:02:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2022-01-31 19:02:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 19:02:55,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:55,205 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:55,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 19:02:55,205 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1666442292, now seen corresponding path program 5 times [2022-01-31 19:02:55,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:55,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549305725] [2022-01-31 19:02:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:55,207 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:55,207 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:55,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:55,208 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 19:02:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 19:02:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:02:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:55,524 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549305725] [2022-01-31 19:02:55,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [549305725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:55,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:55,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 19:02:55,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770317701] [2022-01-31 19:02:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:55,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 19:02:55,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:55,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 19:02:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:02:55,525 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:02:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:55,900 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2022-01-31 19:02:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 19:02:55,901 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-01-31 19:02:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:55,902 INFO L225 Difference]: With dead ends: 70 [2022-01-31 19:02:55,903 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 19:02:55,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:02:55,905 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:55,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 117 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:02:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 19:02:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2022-01-31 19:02:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:02:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2022-01-31 19:02:55,924 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 54 [2022-01-31 19:02:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:55,925 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2022-01-31 19:02:55,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:02:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2022-01-31 19:02:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 19:02:55,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:55,926 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:55,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 19:02:55,927 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:55,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1145924117, now seen corresponding path program 6 times [2022-01-31 19:02:55,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:55,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144220077] [2022-01-31 19:02:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:55,930 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:55,930 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:55,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:55,932 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 19:02:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 19:02:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:02:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:02:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:56,015 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:56,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144220077] [2022-01-31 19:02:56,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [144220077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:56,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:56,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 19:02:56,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563915043] [2022-01-31 19:02:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:56,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 19:02:56,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 19:02:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-31 19:02:56,017 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:02:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:56,158 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2022-01-31 19:02:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 19:02:56,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 62 [2022-01-31 19:02:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:56,160 INFO L225 Difference]: With dead ends: 122 [2022-01-31 19:02:56,160 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 19:02:56,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:02:56,161 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:56,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 48 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:02:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 19:02:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2022-01-31 19:02:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:02:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2022-01-31 19:02:56,178 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 62 [2022-01-31 19:02:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:56,178 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2022-01-31 19:02:56,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:02:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2022-01-31 19:02:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 19:02:56,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:56,180 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:56,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 19:02:56,181 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:56,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:56,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1000070502, now seen corresponding path program 7 times [2022-01-31 19:02:56,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:56,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681587905] [2022-01-31 19:02:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:56,183 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:56,183 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:56,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:56,184 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:02:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 19:02:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:02:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:02:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:56,529 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:56,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681587905] [2022-01-31 19:02:56,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1681587905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:56,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:56,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 19:02:56,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827001567] [2022-01-31 19:02:56,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:56,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 19:02:56,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 19:02:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:02:56,531 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:02:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:57,143 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2022-01-31 19:02:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:02:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 66 [2022-01-31 19:02:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:57,144 INFO L225 Difference]: With dead ends: 82 [2022-01-31 19:02:57,144 INFO L226 Difference]: Without dead ends: 80 [2022-01-31 19:02:57,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:02:57,146 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:57,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 120 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:02:57,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-31 19:02:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2022-01-31 19:02:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 62 states have internal predecessors, (64), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:02:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2022-01-31 19:02:57,205 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 66 [2022-01-31 19:02:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:57,205 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2022-01-31 19:02:57,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:02:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-01-31 19:02:57,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 19:02:57,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:57,206 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:57,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 19:02:57,206 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:57,206 INFO L85 PathProgramCache]: Analyzing trace with hash -498123491, now seen corresponding path program 8 times [2022-01-31 19:02:57,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:57,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193841187] [2022-01-31 19:02:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:57,208 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:57,208 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:57,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:57,209 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 19:02:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 19:02:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:02:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:02:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:02:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:57,310 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:57,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193841187] [2022-01-31 19:02:57,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1193841187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:57,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:57,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 19:02:57,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268023359] [2022-01-31 19:02:57,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:57,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 19:02:57,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:57,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 19:02:57,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-31 19:02:57,313 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:02:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:57,463 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2022-01-31 19:02:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 19:02:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 74 [2022-01-31 19:02:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:57,464 INFO L225 Difference]: With dead ends: 142 [2022-01-31 19:02:57,464 INFO L226 Difference]: Without dead ends: 83 [2022-01-31 19:02:57,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-01-31 19:02:57,466 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:57,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 50 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:02:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-31 19:02:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2022-01-31 19:02:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 66 states have internal predecessors, (68), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:02:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2022-01-31 19:02:57,480 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 74 [2022-01-31 19:02:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:57,481 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2022-01-31 19:02:57,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:02:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2022-01-31 19:02:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 19:02:57,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:57,481 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:57,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 19:02:57,481 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1132846056, now seen corresponding path program 9 times [2022-01-31 19:02:57,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:57,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551300374] [2022-01-31 19:02:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:57,484 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:57,484 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:57,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:57,485 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 19:02:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:02:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:02:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:02:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:02:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:57,975 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551300374] [2022-01-31 19:02:57,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [551300374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:57,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:57,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:02:57,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493194656] [2022-01-31 19:02:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:57,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:02:57,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:02:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:02:57,977 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:02:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:58,816 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-01-31 19:02:58,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 19:02:58,817 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 78 [2022-01-31 19:02:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:58,817 INFO L225 Difference]: With dead ends: 94 [2022-01-31 19:02:58,818 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 19:02:58,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1903, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:02:58,819 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 84 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:58,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 160 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:02:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 19:02:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2022-01-31 19:02:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 72 states have internal predecessors, (74), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:02:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2022-01-31 19:02:58,832 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 78 [2022-01-31 19:02:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:58,833 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2022-01-31 19:02:58,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 19:02:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-01-31 19:02:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 19:02:58,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:58,837 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:58,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 19:02:58,837 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1931260367, now seen corresponding path program 10 times [2022-01-31 19:02:58,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882850853] [2022-01-31 19:02:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:58,840 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:58,840 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:58,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:58,841 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 19:02:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:02:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:02:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:02:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:02:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:02:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:58,952 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:58,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882850853] [2022-01-31 19:02:58,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [882850853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:58,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:58,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 19:02:58,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868529526] [2022-01-31 19:02:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:58,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 19:02:58,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 19:02:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:02:58,953 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:02:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:02:59,146 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2022-01-31 19:02:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 19:02:59,146 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 86 [2022-01-31 19:02:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:02:59,147 INFO L225 Difference]: With dead ends: 162 [2022-01-31 19:02:59,147 INFO L226 Difference]: Without dead ends: 95 [2022-01-31 19:02:59,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:02:59,148 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:02:59,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:02:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-31 19:02:59,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2022-01-31 19:02:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.04) internal successors, (78), 76 states have internal predecessors, (78), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:02:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2022-01-31 19:02:59,183 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 86 [2022-01-31 19:02:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:02:59,183 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2022-01-31 19:02:59,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:02:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2022-01-31 19:02:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-31 19:02:59,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:02:59,184 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:02:59,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 19:02:59,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:02:59,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:02:59,184 INFO L85 PathProgramCache]: Analyzing trace with hash -258607030, now seen corresponding path program 11 times [2022-01-31 19:02:59,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:02:59,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754658625] [2022-01-31 19:02:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:02:59,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:02:59,189 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:02:59,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:02:59,190 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:02:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:02:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 19:02:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:02:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:02:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:02:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:02:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:02:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:02:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:02:59,483 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:02:59,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754658625] [2022-01-31 19:02:59,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1754658625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:02:59,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:02:59,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 19:02:59,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963350291] [2022-01-31 19:02:59,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:02:59,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 19:02:59,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:02:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 19:02:59,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:02:59,484 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 17 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:03:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:00,430 INFO L93 Difference]: Finished difference Result 106 states and 109 transitions. [2022-01-31 19:03:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 19:03:00,431 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 90 [2022-01-31 19:03:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:00,432 INFO L225 Difference]: With dead ends: 106 [2022-01-31 19:03:00,432 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 19:03:00,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=372, Invalid=1884, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:03:00,433 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 69 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:00,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 172 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:03:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 19:03:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-01-31 19:03:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.037037037037037) internal successors, (84), 82 states have internal predecessors, (84), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:03:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2022-01-31 19:03:00,466 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 90 [2022-01-31 19:03:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:00,466 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2022-01-31 19:03:00,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 8 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 19:03:00,466 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-01-31 19:03:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-31 19:03:00,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:00,467 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:00,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 19:03:00,467 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:00,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash -41798655, now seen corresponding path program 12 times [2022-01-31 19:03:00,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:00,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926072957] [2022-01-31 19:03:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:00,469 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:00,469 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:00,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:00,470 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 19:03:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:03:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:03:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:03:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:00,573 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:00,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926072957] [2022-01-31 19:03:00,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [926072957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:00,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:00,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 19:03:00,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733336541] [2022-01-31 19:03:00,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:00,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 19:03:00,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:00,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 19:03:00,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-31 19:03:00,574 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:03:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:00,800 INFO L93 Difference]: Finished difference Result 182 states and 187 transitions. [2022-01-31 19:03:00,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 19:03:00,801 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 98 [2022-01-31 19:03:00,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:00,801 INFO L225 Difference]: With dead ends: 182 [2022-01-31 19:03:00,801 INFO L226 Difference]: Without dead ends: 107 [2022-01-31 19:03:00,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:03:00,802 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:00,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 63 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:03:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-31 19:03:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2022-01-31 19:03:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.035294117647059) internal successors, (88), 86 states have internal predecessors, (88), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:03:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2022-01-31 19:03:00,818 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 98 [2022-01-31 19:03:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:00,818 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2022-01-31 19:03:00,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:03:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2022-01-31 19:03:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 19:03:00,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:00,819 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:00,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 19:03:00,819 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:00,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2050398716, now seen corresponding path program 13 times [2022-01-31 19:03:00,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:00,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833455017] [2022-01-31 19:03:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:00,821 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:00,821 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:00,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:00,822 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:03:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:03:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:03:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:01,159 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:01,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833455017] [2022-01-31 19:03:01,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1833455017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:01,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:01,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 19:03:01,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186855648] [2022-01-31 19:03:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:01,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 19:03:01,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 19:03:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:03:01,162 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 17 states have internal predecessors, (66), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:03:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:02,225 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2022-01-31 19:03:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 19:03:02,226 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 17 states have internal predecessors, (66), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 102 [2022-01-31 19:03:02,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:02,226 INFO L225 Difference]: With dead ends: 118 [2022-01-31 19:03:02,226 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 19:03:02,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=463, Invalid=2399, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:03:02,228 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 78 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:02,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 195 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:03:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 19:03:02,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-01-31 19:03:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 91 states have (on average 1.032967032967033) internal successors, (94), 92 states have internal predecessors, (94), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:03:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2022-01-31 19:03:02,245 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 102 [2022-01-31 19:03:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:02,246 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2022-01-31 19:03:02,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 17 states have internal predecessors, (66), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 19:03:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2022-01-31 19:03:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 19:03:02,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:02,247 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 19:03:02,247 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:02,247 INFO L85 PathProgramCache]: Analyzing trace with hash 143066035, now seen corresponding path program 14 times [2022-01-31 19:03:02,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:02,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172470509] [2022-01-31 19:03:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:02,249 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:02,249 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:02,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:02,250 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 19:03:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:03:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:03:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:02,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:02,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172470509] [2022-01-31 19:03:02,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1172470509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:02,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:02,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 19:03:02,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667081472] [2022-01-31 19:03:02,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:02,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 19:03:02,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 19:03:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-31 19:03:02,366 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:03:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:02,631 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2022-01-31 19:03:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 19:03:02,632 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 110 [2022-01-31 19:03:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:02,632 INFO L225 Difference]: With dead ends: 202 [2022-01-31 19:03:02,632 INFO L226 Difference]: Without dead ends: 119 [2022-01-31 19:03:02,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:03:02,634 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 42 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:02,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 72 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:03:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-31 19:03:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2022-01-31 19:03:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 96 states have internal predecessors, (98), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:03:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2022-01-31 19:03:02,654 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 110 [2022-01-31 19:03:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:02,654 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2022-01-31 19:03:02,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:03:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2022-01-31 19:03:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 19:03:02,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:02,655 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:02,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 19:03:02,656 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1555871442, now seen corresponding path program 15 times [2022-01-31 19:03:02,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:02,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003969551] [2022-01-31 19:03:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:02,658 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:02,658 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:02,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:02,660 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:03:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:03:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:03:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:03,079 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003969551] [2022-01-31 19:03:03,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2003969551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:03,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:03,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 19:03:03,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604507095] [2022-01-31 19:03:03,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:03,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 19:03:03,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:03,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 19:03:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:03:03,080 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 20 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 18 states have internal predecessors, (73), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:03:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:04,345 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2022-01-31 19:03:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 19:03:04,345 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 18 states have internal predecessors, (73), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 114 [2022-01-31 19:03:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:04,346 INFO L225 Difference]: With dead ends: 130 [2022-01-31 19:03:04,346 INFO L226 Difference]: Without dead ends: 128 [2022-01-31 19:03:04,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=548, Invalid=2758, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:03:04,347 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 82 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:04,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 215 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:03:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-31 19:03:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2022-01-31 19:03:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 102 states have internal predecessors, (104), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:03:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2022-01-31 19:03:04,369 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 114 [2022-01-31 19:03:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:04,369 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2022-01-31 19:03:04,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 18 states have internal predecessors, (73), 10 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 19:03:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2022-01-31 19:03:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-31 19:03:04,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:04,370 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:04,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 19:03:04,370 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash 584212709, now seen corresponding path program 16 times [2022-01-31 19:03:04,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:04,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100380440] [2022-01-31 19:03:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:04,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:04,372 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:04,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:04,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 19:03:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:03:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:03:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:04,491 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:04,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100380440] [2022-01-31 19:03:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1100380440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:04,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:04,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 19:03:04,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559603455] [2022-01-31 19:03:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:04,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 19:03:04,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:04,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 19:03:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-31 19:03:04,493 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:03:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:04,760 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2022-01-31 19:03:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 19:03:04,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 122 [2022-01-31 19:03:04,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:04,761 INFO L225 Difference]: With dead ends: 222 [2022-01-31 19:03:04,762 INFO L226 Difference]: Without dead ends: 131 [2022-01-31 19:03:04,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2022-01-31 19:03:04,763 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 44 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:04,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 69 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:03:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-31 19:03:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2022-01-31 19:03:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 106 states have internal predecessors, (108), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:03:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2022-01-31 19:03:04,790 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 122 [2022-01-31 19:03:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:04,790 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2022-01-31 19:03:04,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:03:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2022-01-31 19:03:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 19:03:04,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:04,792 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:04,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 19:03:04,792 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1833125344, now seen corresponding path program 17 times [2022-01-31 19:03:04,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:04,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650491750] [2022-01-31 19:03:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:04,794 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:04,794 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:04,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:04,795 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:03:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:03:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:05,197 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:05,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650491750] [2022-01-31 19:03:05,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1650491750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:05,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:05,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 19:03:05,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874192493] [2022-01-31 19:03:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:05,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 19:03:05,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:05,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 19:03:05,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:03:05,198 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 21 states, 20 states have (on average 4.0) internal successors, (80), 19 states have internal predecessors, (80), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:03:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:06,770 INFO L93 Difference]: Finished difference Result 142 states and 145 transitions. [2022-01-31 19:03:06,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:03:06,770 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 19 states have internal predecessors, (80), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 126 [2022-01-31 19:03:06,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:06,771 INFO L225 Difference]: With dead ends: 142 [2022-01-31 19:03:06,771 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 19:03:06,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=3376, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:03:06,773 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 94 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:06,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 266 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:03:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 19:03:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2022-01-31 19:03:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 111 states have (on average 1.027027027027027) internal successors, (114), 112 states have internal predecessors, (114), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:03:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2022-01-31 19:03:06,817 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 126 [2022-01-31 19:03:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:06,817 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2022-01-31 19:03:06,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 19 states have internal predecessors, (80), 11 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 19:03:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2022-01-31 19:03:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-31 19:03:06,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:06,818 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:06,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 19:03:06,819 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash -223638633, now seen corresponding path program 18 times [2022-01-31 19:03:06,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:06,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316430337] [2022-01-31 19:03:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:06,821 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:06,821 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:06,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:06,823 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 19:03:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:03:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:06,967 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:06,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316430337] [2022-01-31 19:03:06,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [316430337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:06,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:06,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 19:03:06,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330912532] [2022-01-31 19:03:06,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:06,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 19:03:06,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 19:03:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-01-31 19:03:06,969 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:03:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:07,236 INFO L93 Difference]: Finished difference Result 242 states and 247 transitions. [2022-01-31 19:03:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 19:03:07,236 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 134 [2022-01-31 19:03:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:07,238 INFO L225 Difference]: With dead ends: 242 [2022-01-31 19:03:07,238 INFO L226 Difference]: Without dead ends: 143 [2022-01-31 19:03:07,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:03:07,239 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 46 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:07,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 78 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:03:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-31 19:03:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2022-01-31 19:03:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 116 states have internal predecessors, (118), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:03:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2022-01-31 19:03:07,267 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 134 [2022-01-31 19:03:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:07,267 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2022-01-31 19:03:07,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:03:07,267 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2022-01-31 19:03:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-31 19:03:07,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:07,268 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:07,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 19:03:07,268 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1587687406, now seen corresponding path program 19 times [2022-01-31 19:03:07,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:07,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051710488] [2022-01-31 19:03:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:07,270 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:07,270 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:07,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:07,271 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:03:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:03:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:07,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051710488] [2022-01-31 19:03:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051710488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:07,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:07,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 19:03:07,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126277762] [2022-01-31 19:03:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:07,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 19:03:07,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 19:03:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:03:07,699 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand has 21 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:03:09,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:09,385 INFO L93 Difference]: Finished difference Result 154 states and 157 transitions. [2022-01-31 19:03:09,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 19:03:09,386 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 138 [2022-01-31 19:03:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:09,386 INFO L225 Difference]: With dead ends: 154 [2022-01-31 19:03:09,386 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 19:03:09,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=754, Invalid=3802, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:03:09,388 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 86 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:09,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 275 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:03:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 19:03:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2022-01-31 19:03:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 121 states have (on average 1.024793388429752) internal successors, (124), 122 states have internal predecessors, (124), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:03:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2022-01-31 19:03:09,418 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 138 [2022-01-31 19:03:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:09,419 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2022-01-31 19:03:09,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 19:03:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2022-01-31 19:03:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-31 19:03:09,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:09,419 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:09,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 19:03:09,420 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:09,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1173996489, now seen corresponding path program 20 times [2022-01-31 19:03:09,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:09,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851922648] [2022-01-31 19:03:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:09,423 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:09,424 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:09,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:09,425 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 19:03:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:03:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:09,585 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:09,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851922648] [2022-01-31 19:03:09,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [851922648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:09,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:09,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 19:03:09,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459009674] [2022-01-31 19:03:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:09,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 19:03:09,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 19:03:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-01-31 19:03:09,586 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:03:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:09,896 INFO L93 Difference]: Finished difference Result 262 states and 267 transitions. [2022-01-31 19:03:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 19:03:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 146 [2022-01-31 19:03:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:09,898 INFO L225 Difference]: With dead ends: 262 [2022-01-31 19:03:09,898 INFO L226 Difference]: Without dead ends: 155 [2022-01-31 19:03:09,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=284, Invalid=586, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:03:09,899 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 48 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:09,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 90 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:03:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-01-31 19:03:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2022-01-31 19:03:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.024) internal successors, (128), 126 states have internal predecessors, (128), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:03:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2022-01-31 19:03:09,941 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 146 [2022-01-31 19:03:09,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:09,943 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2022-01-31 19:03:09,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:03:09,943 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2022-01-31 19:03:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-31 19:03:09,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:09,944 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:09,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 19:03:09,944 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash -530962492, now seen corresponding path program 21 times [2022-01-31 19:03:09,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:09,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127018711] [2022-01-31 19:03:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:09,948 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:09,948 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:09,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:09,950 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:03:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:10,423 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:10,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127018711] [2022-01-31 19:03:10,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127018711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:10,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:10,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 19:03:10,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516487961] [2022-01-31 19:03:10,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:10,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 19:03:10,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 19:03:10,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:03:10,424 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 23 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:03:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:12,513 INFO L93 Difference]: Finished difference Result 166 states and 169 transitions. [2022-01-31 19:03:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 19:03:12,521 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 150 [2022-01-31 19:03:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:12,522 INFO L225 Difference]: With dead ends: 166 [2022-01-31 19:03:12,522 INFO L226 Difference]: Without dead ends: 164 [2022-01-31 19:03:12,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=885, Invalid=4517, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:03:12,523 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 86 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:12,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 328 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 19:03:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-31 19:03:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-01-31 19:03:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 132 states have internal predecessors, (134), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:03:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2022-01-31 19:03:12,562 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 150 [2022-01-31 19:03:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:12,563 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2022-01-31 19:03:12,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 13 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 19:03:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2022-01-31 19:03:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-31 19:03:12,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:12,563 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:12,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 19:03:12,564 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash 574900603, now seen corresponding path program 22 times [2022-01-31 19:03:12,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:12,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181140790] [2022-01-31 19:03:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:12,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:12,565 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:12,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:12,567 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 19:03:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:12,735 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:12,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181140790] [2022-01-31 19:03:12,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [181140790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:12,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:12,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 19:03:12,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260745299] [2022-01-31 19:03:12,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:12,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 19:03:12,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:12,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 19:03:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2022-01-31 19:03:12,737 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:03:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:13,164 INFO L93 Difference]: Finished difference Result 282 states and 287 transitions. [2022-01-31 19:03:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 19:03:13,165 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 158 [2022-01-31 19:03:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:13,166 INFO L225 Difference]: With dead ends: 282 [2022-01-31 19:03:13,166 INFO L226 Difference]: Without dead ends: 167 [2022-01-31 19:03:13,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=326, Invalid=666, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:03:13,167 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 50 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:13,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 117 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:03:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-31 19:03:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2022-01-31 19:03:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 135 states have (on average 1.0222222222222221) internal successors, (138), 136 states have internal predecessors, (138), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:03:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2022-01-31 19:03:13,202 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 158 [2022-01-31 19:03:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:13,202 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2022-01-31 19:03:13,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:03:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2022-01-31 19:03:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-31 19:03:13,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:13,203 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:13,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 19:03:13,204 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:13,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1298166538, now seen corresponding path program 23 times [2022-01-31 19:03:13,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:13,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115934605] [2022-01-31 19:03:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:13,205 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:13,205 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:13,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:13,206 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:03:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:14,441 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:14,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115934605] [2022-01-31 19:03:14,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2115934605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:14,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:14,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:03:14,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067016102] [2022-01-31 19:03:14,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:14,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:03:14,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:14,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:03:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:03:14,443 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 34 states have internal predecessors, (101), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:03:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:17,144 INFO L93 Difference]: Finished difference Result 179 states and 182 transitions. [2022-01-31 19:03:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:03:17,145 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 34 states have internal predecessors, (101), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 162 [2022-01-31 19:03:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:17,145 INFO L225 Difference]: With dead ends: 179 [2022-01-31 19:03:17,145 INFO L226 Difference]: Without dead ends: 177 [2022-01-31 19:03:17,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1731, Invalid=4121, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 19:03:17,147 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 97 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:17,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 326 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:03:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-31 19:03:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2022-01-31 19:03:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 141 states have (on average 1.0212765957446808) internal successors, (144), 142 states have internal predecessors, (144), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:03:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2022-01-31 19:03:17,188 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 162 [2022-01-31 19:03:17,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:17,188 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2022-01-31 19:03:17,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 34 states have internal predecessors, (101), 14 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 19:03:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2022-01-31 19:03:17,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-31 19:03:17,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:17,189 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:17,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 19:03:17,189 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:17,189 INFO L85 PathProgramCache]: Analyzing trace with hash -726508371, now seen corresponding path program 24 times [2022-01-31 19:03:17,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:17,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502814173] [2022-01-31 19:03:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:17,191 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:17,191 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:17,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:17,192 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 19:03:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:17,360 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:17,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502814173] [2022-01-31 19:03:17,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [502814173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:17,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:17,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 19:03:17,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71628187] [2022-01-31 19:03:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:17,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 19:03:17,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 19:03:17,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2022-01-31 19:03:17,361 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 18 states have internal predecessors, (104), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:03:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:17,754 INFO L93 Difference]: Finished difference Result 302 states and 307 transitions. [2022-01-31 19:03:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 19:03:17,755 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 18 states have internal predecessors, (104), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 170 [2022-01-31 19:03:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:17,756 INFO L225 Difference]: With dead ends: 302 [2022-01-31 19:03:17,756 INFO L226 Difference]: Without dead ends: 179 [2022-01-31 19:03:17,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=371, Invalid=751, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:03:17,757 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 52 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:17,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 103 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:03:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-31 19:03:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2022-01-31 19:03:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 146 states have internal predecessors, (148), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:03:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2022-01-31 19:03:17,799 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 170 [2022-01-31 19:03:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:17,799 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2022-01-31 19:03:17,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 18 states have internal predecessors, (104), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:03:17,799 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2022-01-31 19:03:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 19:03:17,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:17,800 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:17,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 19:03:17,800 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1741340760, now seen corresponding path program 25 times [2022-01-31 19:03:17,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:17,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379386273] [2022-01-31 19:03:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:17,802 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:17,802 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:17,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:17,803 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:18,347 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:18,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379386273] [2022-01-31 19:03:18,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [379386273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:18,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:18,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:03:18,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719899378] [2022-01-31 19:03:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:18,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:03:18,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:03:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:03:18,349 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 22 states have internal predecessors, (108), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:03:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:20,911 INFO L93 Difference]: Finished difference Result 190 states and 193 transitions. [2022-01-31 19:03:20,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 19:03:20,911 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 22 states have internal predecessors, (108), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 174 [2022-01-31 19:03:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:20,912 INFO L225 Difference]: With dead ends: 190 [2022-01-31 19:03:20,912 INFO L226 Difference]: Without dead ends: 188 [2022-01-31 19:03:20,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1135, Invalid=5671, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 19:03:20,914 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 104 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:20,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 392 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 19:03:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-31 19:03:20,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2022-01-31 19:03:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 151 states have (on average 1.0198675496688743) internal successors, (154), 152 states have internal predecessors, (154), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:03:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2022-01-31 19:03:20,974 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 174 [2022-01-31 19:03:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:20,975 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2022-01-31 19:03:20,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 22 states have internal predecessors, (108), 15 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 19:03:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2022-01-31 19:03:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 19:03:20,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:20,976 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:20,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 19:03:20,976 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:20,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash 34291039, now seen corresponding path program 26 times [2022-01-31 19:03:20,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:20,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851077788] [2022-01-31 19:03:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:20,978 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:20,978 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:20,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:20,979 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 19:03:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:03:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:21,174 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:21,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851077788] [2022-01-31 19:03:21,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [851077788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:21,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:21,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 19:03:21,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954869209] [2022-01-31 19:03:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:21,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 19:03:21,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 19:03:21,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2022-01-31 19:03:21,175 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand has 20 states, 20 states have (on average 5.55) internal successors, (111), 19 states have internal predecessors, (111), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:03:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:21,578 INFO L93 Difference]: Finished difference Result 322 states and 327 transitions. [2022-01-31 19:03:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 19:03:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 19 states have internal predecessors, (111), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 182 [2022-01-31 19:03:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:21,580 INFO L225 Difference]: With dead ends: 322 [2022-01-31 19:03:21,580 INFO L226 Difference]: Without dead ends: 191 [2022-01-31 19:03:21,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=419, Invalid=841, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:03:21,581 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:21,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 104 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:03:21,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-01-31 19:03:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2022-01-31 19:03:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 155 states have (on average 1.0193548387096774) internal successors, (158), 156 states have internal predecessors, (158), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:03:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2022-01-31 19:03:21,633 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 182 [2022-01-31 19:03:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:21,633 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2022-01-31 19:03:21,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 19 states have internal predecessors, (111), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:03:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2022-01-31 19:03:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-31 19:03:21,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:21,634 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:21,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 19:03:21,634 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:21,635 INFO L85 PathProgramCache]: Analyzing trace with hash 415399898, now seen corresponding path program 27 times [2022-01-31 19:03:21,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:21,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841825531] [2022-01-31 19:03:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:21,636 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:21,636 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:21,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:21,637 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:03:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:03:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:22,821 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:22,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841825531] [2022-01-31 19:03:22,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1841825531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:22,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:22,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:03:22,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317082219] [2022-01-31 19:03:22,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:22,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:03:22,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:03:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:03:22,822 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand has 39 states, 38 states have (on average 3.026315789473684) internal successors, (115), 37 states have internal predecessors, (115), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:03:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:25,941 INFO L93 Difference]: Finished difference Result 202 states and 205 transitions. [2022-01-31 19:03:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 19:03:25,942 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.026315789473684) internal successors, (115), 37 states have internal predecessors, (115), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 186 [2022-01-31 19:03:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:25,943 INFO L225 Difference]: With dead ends: 202 [2022-01-31 19:03:25,943 INFO L226 Difference]: Without dead ends: 200 [2022-01-31 19:03:25,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1998, Invalid=8304, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:03:25,945 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 472 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:25,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 452 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:03:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-31 19:03:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2022-01-31 19:03:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 161 states have (on average 1.0186335403726707) internal successors, (164), 162 states have internal predecessors, (164), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:03:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2022-01-31 19:03:25,998 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 186 [2022-01-31 19:03:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:25,998 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2022-01-31 19:03:25,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.026315789473684) internal successors, (115), 37 states have internal predecessors, (115), 16 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 19:03:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2022-01-31 19:03:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-31 19:03:25,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:25,999 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:26,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 19:03:26,000 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1229575279, now seen corresponding path program 28 times [2022-01-31 19:03:26,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:26,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337832579] [2022-01-31 19:03:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:26,001 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:26,002 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:26,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:26,002 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 19:03:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:03:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:03:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:03:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:26,197 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:26,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337832579] [2022-01-31 19:03:26,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1337832579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:26,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:26,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 19:03:26,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500314964] [2022-01-31 19:03:26,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:26,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 19:03:26,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:26,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 19:03:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2022-01-31 19:03:26,198 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 20 states have internal predecessors, (118), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:03:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:26,640 INFO L93 Difference]: Finished difference Result 342 states and 347 transitions. [2022-01-31 19:03:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 19:03:26,641 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 20 states have internal predecessors, (118), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 194 [2022-01-31 19:03:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:26,643 INFO L225 Difference]: With dead ends: 342 [2022-01-31 19:03:26,644 INFO L226 Difference]: Without dead ends: 203 [2022-01-31 19:03:26,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=470, Invalid=936, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:03:26,644 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 56 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:26,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 114 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:03:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-01-31 19:03:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2022-01-31 19:03:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 165 states have (on average 1.018181818181818) internal successors, (168), 166 states have internal predecessors, (168), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:03:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2022-01-31 19:03:26,698 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 194 [2022-01-31 19:03:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:26,698 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2022-01-31 19:03:26,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 20 states have internal predecessors, (118), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:03:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2022-01-31 19:03:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-31 19:03:26,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:26,699 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:26,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 19:03:26,699 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:26,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -745632372, now seen corresponding path program 29 times [2022-01-31 19:03:26,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:26,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184268888] [2022-01-31 19:03:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:26,701 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:26,701 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:26,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:26,702 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:03:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:03:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:03:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:27,344 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:27,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184268888] [2022-01-31 19:03:27,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [184268888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:27,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:27,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 19:03:27,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556338530] [2022-01-31 19:03:27,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:27,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 19:03:27,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:27,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 19:03:27,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:03:27,346 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand has 27 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 25 states have internal predecessors, (122), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:03:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:30,628 INFO L93 Difference]: Finished difference Result 214 states and 217 transitions. [2022-01-31 19:03:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 19:03:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 25 states have internal predecessors, (122), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 198 [2022-01-31 19:03:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:30,630 INFO L225 Difference]: With dead ends: 214 [2022-01-31 19:03:30,630 INFO L226 Difference]: Without dead ends: 212 [2022-01-31 19:03:30,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1451, Invalid=7291, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 19:03:30,631 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 148 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:30,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 490 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2622 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 19:03:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-31 19:03:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2022-01-31 19:03:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 171 states have (on average 1.0175438596491229) internal successors, (174), 172 states have internal predecessors, (174), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:03:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2022-01-31 19:03:30,695 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 198 [2022-01-31 19:03:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:30,695 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2022-01-31 19:03:30,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 25 states have internal predecessors, (122), 17 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-31 19:03:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2022-01-31 19:03:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-31 19:03:30,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:30,696 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:30,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 19:03:30,696 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1991927619, now seen corresponding path program 30 times [2022-01-31 19:03:30,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914048445] [2022-01-31 19:03:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:30,698 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:30,698 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:30,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:30,699 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 19:03:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:03:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:03:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:03:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:03:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:30,924 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:30,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914048445] [2022-01-31 19:03:30,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1914048445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:30,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:30,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 19:03:30,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389761121] [2022-01-31 19:03:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:30,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 19:03:30,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 19:03:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2022-01-31 19:03:30,926 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 21 states have internal predecessors, (125), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:03:31,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:31,482 INFO L93 Difference]: Finished difference Result 362 states and 367 transitions. [2022-01-31 19:03:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 19:03:31,483 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 21 states have internal predecessors, (125), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 206 [2022-01-31 19:03:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:31,484 INFO L225 Difference]: With dead ends: 362 [2022-01-31 19:03:31,484 INFO L226 Difference]: Without dead ends: 215 [2022-01-31 19:03:31,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1036, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:03:31,484 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 58 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:31,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 126 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:03:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-01-31 19:03:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2022-01-31 19:03:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 175 states have (on average 1.0171428571428571) internal successors, (178), 176 states have internal predecessors, (178), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:03:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2022-01-31 19:03:31,545 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 206 [2022-01-31 19:03:31,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:31,545 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2022-01-31 19:03:31,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 21 states have internal predecessors, (125), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:03:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2022-01-31 19:03:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-31 19:03:31,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:31,546 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:31,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 19:03:31,546 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:31,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1887393602, now seen corresponding path program 31 times [2022-01-31 19:03:31,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:31,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213435139] [2022-01-31 19:03:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:31,548 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:31,548 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:31,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:31,549 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:03:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:03:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:03:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:03:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:03:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:32,243 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:32,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213435139] [2022-01-31 19:03:32,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1213435139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:32,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:32,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:03:32,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514820839] [2022-01-31 19:03:32,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:32,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:03:32,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:03:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:03:32,244 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 26 states have internal predecessors, (129), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:03:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:35,923 INFO L93 Difference]: Finished difference Result 226 states and 229 transitions. [2022-01-31 19:03:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 19:03:35,924 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 26 states have internal predecessors, (129), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 210 [2022-01-31 19:03:35,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:35,925 INFO L225 Difference]: With dead ends: 226 [2022-01-31 19:03:35,925 INFO L226 Difference]: Without dead ends: 224 [2022-01-31 19:03:35,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1615, Invalid=8087, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 19:03:35,926 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 122 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:35,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 524 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:03:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-01-31 19:03:36,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-01-31 19:03:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 181 states have (on average 1.0165745856353592) internal successors, (184), 182 states have internal predecessors, (184), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:03:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2022-01-31 19:03:36,007 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 210 [2022-01-31 19:03:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:36,007 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2022-01-31 19:03:36,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 26 states have internal predecessors, (129), 18 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 19:03:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2022-01-31 19:03:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-31 19:03:36,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:36,008 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:36,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 19:03:36,008 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1304375413, now seen corresponding path program 32 times [2022-01-31 19:03:36,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276212604] [2022-01-31 19:03:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:36,010 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:36,010 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:36,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:36,012 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 19:03:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:03:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:03:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:03:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:03:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:03:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:03:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:36,256 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:36,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276212604] [2022-01-31 19:03:36,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1276212604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:36,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:36,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 19:03:36,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703301514] [2022-01-31 19:03:36,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:36,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 19:03:36,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 19:03:36,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 19:03:36,257 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:03:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:36,811 INFO L93 Difference]: Finished difference Result 382 states and 387 transitions. [2022-01-31 19:03:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 19:03:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 218 [2022-01-31 19:03:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:36,812 INFO L225 Difference]: With dead ends: 382 [2022-01-31 19:03:36,812 INFO L226 Difference]: Without dead ends: 227 [2022-01-31 19:03:36,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=581, Invalid=1141, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:03:36,813 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 60 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:36,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 119 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:03:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-31 19:03:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-01-31 19:03:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 185 states have (on average 1.0162162162162163) internal successors, (188), 186 states have internal predecessors, (188), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:03:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2022-01-31 19:03:36,880 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 218 [2022-01-31 19:03:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:36,880 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2022-01-31 19:03:36,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:03:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2022-01-31 19:03:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-31 19:03:36,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:36,881 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:36,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 19:03:36,882 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1260392816, now seen corresponding path program 33 times [2022-01-31 19:03:36,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:36,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136615520] [2022-01-31 19:03:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:36,884 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:36,884 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:36,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:36,885 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:03:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:03:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:03:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:03:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:03:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:03:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:37,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:37,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136615520] [2022-01-31 19:03:37,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1136615520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:37,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:37,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:03:37,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354433593] [2022-01-31 19:03:37,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:37,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:03:37,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:03:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:03:37,617 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 26 states have internal predecessors, (136), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:03:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:41,607 INFO L93 Difference]: Finished difference Result 238 states and 241 transitions. [2022-01-31 19:03:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 19:03:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 26 states have internal predecessors, (136), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 222 [2022-01-31 19:03:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:41,608 INFO L225 Difference]: With dead ends: 238 [2022-01-31 19:03:41,609 INFO L226 Difference]: Without dead ends: 236 [2022-01-31 19:03:41,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1769, Invalid=8737, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 19:03:41,609 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 164 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 2960 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:41,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 544 Invalid, 3114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2960 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-31 19:03:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-01-31 19:03:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2022-01-31 19:03:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 191 states have (on average 1.0157068062827226) internal successors, (194), 192 states have internal predecessors, (194), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:03:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2022-01-31 19:03:41,679 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 222 [2022-01-31 19:03:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:41,679 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2022-01-31 19:03:41,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 26 states have internal predecessors, (136), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-31 19:03:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2022-01-31 19:03:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-31 19:03:41,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:41,681 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:41,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 19:03:41,681 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:41,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash -552876249, now seen corresponding path program 34 times [2022-01-31 19:03:41,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:41,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613183637] [2022-01-31 19:03:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:41,683 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:41,683 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:41,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:41,684 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 19:03:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:03:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:03:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:03:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:03:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:03:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:03:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:03:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:41,938 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:41,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613183637] [2022-01-31 19:03:41,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [613183637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:41,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:41,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 19:03:41,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668538987] [2022-01-31 19:03:41,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:41,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 19:03:41,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 19:03:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2022-01-31 19:03:41,940 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 23 states have internal predecessors, (139), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:03:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:42,470 INFO L93 Difference]: Finished difference Result 402 states and 407 transitions. [2022-01-31 19:03:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 19:03:42,470 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 23 states have internal predecessors, (139), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 230 [2022-01-31 19:03:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:42,471 INFO L225 Difference]: With dead ends: 402 [2022-01-31 19:03:42,471 INFO L226 Difference]: Without dead ends: 239 [2022-01-31 19:03:42,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=641, Invalid=1251, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:03:42,472 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 62 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:42,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 130 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 19:03:42,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-01-31 19:03:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 237. [2022-01-31 19:03:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 196 states have internal predecessors, (198), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:03:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2022-01-31 19:03:42,545 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 230 [2022-01-31 19:03:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:42,545 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2022-01-31 19:03:42,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 23 states have internal predecessors, (139), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:03:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2022-01-31 19:03:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-31 19:03:42,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:42,547 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:42,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 19:03:42,547 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1284769698, now seen corresponding path program 35 times [2022-01-31 19:03:42,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:42,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150083648] [2022-01-31 19:03:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:42,549 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:42,549 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:42,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:42,551 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:03:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:03:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:03:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:03:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:03:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:03:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:03:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:03:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:43,289 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150083648] [2022-01-31 19:03:43,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1150083648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:43,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:43,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:03:43,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885248359] [2022-01-31 19:03:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:43,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:03:43,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:03:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=807, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:03:43,290 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand has 30 states, 29 states have (on average 4.931034482758621) internal successors, (143), 28 states have internal predecessors, (143), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:03:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:47,918 INFO L93 Difference]: Finished difference Result 250 states and 253 transitions. [2022-01-31 19:03:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 19:03:47,919 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.931034482758621) internal successors, (143), 28 states have internal predecessors, (143), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 234 [2022-01-31 19:03:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:47,920 INFO L225 Difference]: With dead ends: 250 [2022-01-31 19:03:47,920 INFO L226 Difference]: Without dead ends: 248 [2022-01-31 19:03:47,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1970, Invalid=9802, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 19:03:47,921 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 127 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 3529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:47,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 600 Invalid, 3529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3409 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-31 19:03:47,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-01-31 19:03:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 245. [2022-01-31 19:03:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 201 states have (on average 1.0149253731343284) internal successors, (204), 202 states have internal predecessors, (204), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:03:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2022-01-31 19:03:48,001 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 234 [2022-01-31 19:03:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:48,001 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2022-01-31 19:03:48,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.931034482758621) internal successors, (143), 28 states have internal predecessors, (143), 20 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 19:03:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2022-01-31 19:03:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-31 19:03:48,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:48,002 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:48,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 19:03:48,002 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1971809113, now seen corresponding path program 36 times [2022-01-31 19:03:48,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758880236] [2022-01-31 19:03:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:48,004 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:48,004 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:48,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:48,006 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 19:03:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:03:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:03:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:03:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:03:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:03:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:03:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:03:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:03:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:03:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:48,274 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:48,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758880236] [2022-01-31 19:03:48,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1758880236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:48,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:48,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 19:03:48,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496377494] [2022-01-31 19:03:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:48,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 19:03:48,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 19:03:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2022-01-31 19:03:48,275 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand has 25 states, 25 states have (on average 5.84) internal successors, (146), 24 states have internal predecessors, (146), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:03:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:48,880 INFO L93 Difference]: Finished difference Result 422 states and 427 transitions. [2022-01-31 19:03:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 19:03:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.84) internal successors, (146), 24 states have internal predecessors, (146), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 242 [2022-01-31 19:03:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:48,882 INFO L225 Difference]: With dead ends: 422 [2022-01-31 19:03:48,882 INFO L226 Difference]: Without dead ends: 251 [2022-01-31 19:03:48,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=704, Invalid=1366, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:03:48,883 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 64 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:48,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 142 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:03:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-31 19:03:48,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2022-01-31 19:03:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 205 states have (on average 1.0146341463414634) internal successors, (208), 206 states have internal predecessors, (208), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:03:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2022-01-31 19:03:48,969 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 242 [2022-01-31 19:03:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:48,969 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2022-01-31 19:03:48,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.84) internal successors, (146), 24 states have internal predecessors, (146), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:03:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2022-01-31 19:03:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-01-31 19:03:48,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:48,971 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:48,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 19:03:48,971 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 832818004, now seen corresponding path program 37 times [2022-01-31 19:03:48,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:48,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055398064] [2022-01-31 19:03:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:48,973 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:48,973 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:48,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:48,974 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:03:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:03:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:03:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:03:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:03:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:03:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:03:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:03:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:03:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:49,762 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:49,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055398064] [2022-01-31 19:03:49,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1055398064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:49,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:49,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:03:49,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141109620] [2022-01-31 19:03:49,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:49,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:03:49,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:03:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=865, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:03:49,763 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand has 31 states, 30 states have (on average 5.0) internal successors, (150), 29 states have internal predecessors, (150), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:03:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:55,094 INFO L93 Difference]: Finished difference Result 264 states and 267 transitions. [2022-01-31 19:03:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 19:03:55,094 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.0) internal successors, (150), 29 states have internal predecessors, (150), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 246 [2022-01-31 19:03:55,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:55,095 INFO L225 Difference]: With dead ends: 264 [2022-01-31 19:03:55,095 INFO L226 Difference]: Without dead ends: 262 [2022-01-31 19:03:55,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2490 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2329, Invalid=11011, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 19:03:55,096 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 145 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:55,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 685 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3811 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-31 19:03:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-31 19:03:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 257. [2022-01-31 19:03:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 211 states have (on average 1.014218009478673) internal successors, (214), 212 states have internal predecessors, (214), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:03:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 259 transitions. [2022-01-31 19:03:55,185 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 259 transitions. Word has length 246 [2022-01-31 19:03:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:55,185 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 259 transitions. [2022-01-31 19:03:55,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.0) internal successors, (150), 29 states have internal predecessors, (150), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-31 19:03:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 259 transitions. [2022-01-31 19:03:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-31 19:03:55,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:55,186 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:55,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 19:03:55,186 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash 330915083, now seen corresponding path program 38 times [2022-01-31 19:03:55,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352758094] [2022-01-31 19:03:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:55,188 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:55,188 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:55,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:55,193 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 19:03:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:03:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:03:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:03:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:03:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:03:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:03:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:03:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:03:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:03:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:03:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:03:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:03:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:03:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:03:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:03:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:03:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:03:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:03:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:03:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:55,470 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:55,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352758094] [2022-01-31 19:03:55,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [352758094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:55,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:55,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 19:03:55,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572370336] [2022-01-31 19:03:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:55,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 19:03:55,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 19:03:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2022-01-31 19:03:55,472 INFO L87 Difference]: Start difference. First operand 257 states and 259 transitions. Second operand has 26 states, 26 states have (on average 5.884615384615385) internal successors, (153), 25 states have internal predecessors, (153), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:03:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:03:56,088 INFO L93 Difference]: Finished difference Result 442 states and 447 transitions. [2022-01-31 19:03:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 19:03:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.884615384615385) internal successors, (153), 25 states have internal predecessors, (153), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 254 [2022-01-31 19:03:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:03:56,090 INFO L225 Difference]: With dead ends: 442 [2022-01-31 19:03:56,090 INFO L226 Difference]: Without dead ends: 263 [2022-01-31 19:03:56,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=770, Invalid=1486, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:03:56,091 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:03:56,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 141 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:03:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-01-31 19:03:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2022-01-31 19:03:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 215 states have (on average 1.013953488372093) internal successors, (218), 216 states have internal predecessors, (218), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:03:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 263 transitions. [2022-01-31 19:03:56,182 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 263 transitions. Word has length 254 [2022-01-31 19:03:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:03:56,183 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 263 transitions. [2022-01-31 19:03:56,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.884615384615385) internal successors, (153), 25 states have internal predecessors, (153), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:03:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 263 transitions. [2022-01-31 19:03:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-01-31 19:03:56,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:03:56,184 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:03:56,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 19:03:56,184 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:03:56,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:03:56,184 INFO L85 PathProgramCache]: Analyzing trace with hash -4809594, now seen corresponding path program 39 times [2022-01-31 19:03:56,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:03:56,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504704191] [2022-01-31 19:03:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:03:56,186 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:03:56,186 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:03:56,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:03:56,187 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:03:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:03:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:03:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:03:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:03:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:03:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:03:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:03:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:03:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:03:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:03:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:03:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:03:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:03:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:03:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:03:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:03:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:03:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:03:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:03:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:03:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:03:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:03:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:03:57,013 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:03:57,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504704191] [2022-01-31 19:03:57,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [504704191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:03:57,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:03:57,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 19:03:57,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331878457] [2022-01-31 19:03:57,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:03:57,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 19:03:57,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:03:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 19:03:57,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:03:57,014 INFO L87 Difference]: Start difference. First operand 261 states and 263 transitions. Second operand has 32 states, 31 states have (on average 5.064516129032258) internal successors, (157), 30 states have internal predecessors, (157), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:04:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:02,892 INFO L93 Difference]: Finished difference Result 274 states and 277 transitions. [2022-01-31 19:04:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 19:04:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.064516129032258) internal successors, (157), 30 states have internal predecessors, (157), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 258 [2022-01-31 19:04:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:02,893 INFO L225 Difference]: With dead ends: 274 [2022-01-31 19:04:02,893 INFO L226 Difference]: Without dead ends: 272 [2022-01-31 19:04:02,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2616 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2361, Invalid=11681, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 19:04:02,895 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 139 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 4183 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 4311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:02,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 723 Invalid, 4311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4183 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 19:04:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-01-31 19:04:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2022-01-31 19:04:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 221 states have (on average 1.0135746606334841) internal successors, (224), 222 states have internal predecessors, (224), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:04:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 271 transitions. [2022-01-31 19:04:02,988 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 271 transitions. Word has length 258 [2022-01-31 19:04:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:02,989 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 271 transitions. [2022-01-31 19:04:02,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.064516129032258) internal successors, (157), 30 states have internal predecessors, (157), 22 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 19:04:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 271 transitions. [2022-01-31 19:04:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-31 19:04:02,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:02,990 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:02,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 19:04:02,990 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2083988419, now seen corresponding path program 40 times [2022-01-31 19:04:02,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:02,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886799878] [2022-01-31 19:04:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:02,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:02,992 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:02,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:02,993 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 19:04:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:04:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:04:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:04:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:04:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:04:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:04:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:04:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:04:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:04:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:04:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:04:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:04:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:04:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:04:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:04:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:04:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:04:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:04:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:04:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:04:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:03,333 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:03,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886799878] [2022-01-31 19:04:03,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1886799878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:03,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:03,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 19:04:03,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435679023] [2022-01-31 19:04:03,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:03,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 19:04:03,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 19:04:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2022-01-31 19:04:03,334 INFO L87 Difference]: Start difference. First operand 269 states and 271 transitions. Second operand has 27 states, 27 states have (on average 5.925925925925926) internal successors, (160), 26 states have internal predecessors, (160), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:04:04,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:04,087 INFO L93 Difference]: Finished difference Result 462 states and 467 transitions. [2022-01-31 19:04:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 19:04:04,088 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.925925925925926) internal successors, (160), 26 states have internal predecessors, (160), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 266 [2022-01-31 19:04:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:04,089 INFO L225 Difference]: With dead ends: 462 [2022-01-31 19:04:04,089 INFO L226 Difference]: Without dead ends: 275 [2022-01-31 19:04:04,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=839, Invalid=1611, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:04:04,090 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 68 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:04,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 170 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:04:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-31 19:04:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2022-01-31 19:04:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 225 states have (on average 1.0133333333333334) internal successors, (228), 226 states have internal predecessors, (228), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:04:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 275 transitions. [2022-01-31 19:04:04,186 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 275 transitions. Word has length 266 [2022-01-31 19:04:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:04,187 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 275 transitions. [2022-01-31 19:04:04,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.925925925925926) internal successors, (160), 26 states have internal predecessors, (160), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:04:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 275 transitions. [2022-01-31 19:04:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-31 19:04:04,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:04,188 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:04,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 19:04:04,188 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 869514040, now seen corresponding path program 41 times [2022-01-31 19:04:04,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:04,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653304517] [2022-01-31 19:04:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:04,190 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:04,190 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:04,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:04,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:04:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:04:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:04:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:04:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:04:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:04:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:04:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:04:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:04:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:04:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:04:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:04:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:04:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:04:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:04:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:04:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:04:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:04:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:04:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:04:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:04:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:05,072 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:05,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653304517] [2022-01-31 19:04:05,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [653304517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:05,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:05,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 19:04:05,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645070094] [2022-01-31 19:04:05,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:05,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 19:04:05,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:05,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 19:04:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=987, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:04:05,074 INFO L87 Difference]: Start difference. First operand 273 states and 275 transitions. Second operand has 33 states, 32 states have (on average 5.125) internal successors, (164), 31 states have internal predecessors, (164), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:04:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:11,523 INFO L93 Difference]: Finished difference Result 288 states and 291 transitions. [2022-01-31 19:04:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 19:04:11,523 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 31 states have internal predecessors, (164), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 270 [2022-01-31 19:04:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:11,524 INFO L225 Difference]: With dead ends: 288 [2022-01-31 19:04:11,524 INFO L226 Difference]: Without dead ends: 286 [2022-01-31 19:04:11,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2956 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2754, Invalid=12996, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 19:04:11,526 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 158 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 4447 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 4583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 4447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:11,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 793 Invalid, 4583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 4447 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-31 19:04:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-31 19:04:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 281. [2022-01-31 19:04:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 231 states have (on average 1.0129870129870129) internal successors, (234), 232 states have internal predecessors, (234), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:04:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 283 transitions. [2022-01-31 19:04:11,633 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 283 transitions. Word has length 270 [2022-01-31 19:04:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:11,634 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 283 transitions. [2022-01-31 19:04:11,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 31 states have internal predecessors, (164), 23 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-31 19:04:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 283 transitions. [2022-01-31 19:04:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-31 19:04:11,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:11,635 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:11,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 19:04:11,635 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:11,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:11,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1736255727, now seen corresponding path program 42 times [2022-01-31 19:04:11,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:11,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083542176] [2022-01-31 19:04:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:11,637 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:11,637 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:11,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:11,639 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 19:04:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:04:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:04:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:04:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:04:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:04:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:04:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:04:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:04:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:04:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:04:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:04:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:04:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:04:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:04:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:04:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:04:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:04:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:04:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:04:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:04:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:04:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:11,965 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:11,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083542176] [2022-01-31 19:04:11,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2083542176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:11,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:11,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 19:04:11,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785595312] [2022-01-31 19:04:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:11,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 19:04:11,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 19:04:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2022-01-31 19:04:11,966 INFO L87 Difference]: Start difference. First operand 281 states and 283 transitions. Second operand has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 27 states have internal predecessors, (167), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:04:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:12,736 INFO L93 Difference]: Finished difference Result 482 states and 487 transitions. [2022-01-31 19:04:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 19:04:12,750 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 27 states have internal predecessors, (167), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 278 [2022-01-31 19:04:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:12,751 INFO L225 Difference]: With dead ends: 482 [2022-01-31 19:04:12,751 INFO L226 Difference]: Without dead ends: 287 [2022-01-31 19:04:12,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=911, Invalid=1741, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:04:12,752 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 70 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:12,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 195 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:04:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-31 19:04:12,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-01-31 19:04:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 235 states have (on average 1.0127659574468084) internal successors, (238), 236 states have internal predecessors, (238), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:04:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 287 transitions. [2022-01-31 19:04:12,866 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 287 transitions. Word has length 278 [2022-01-31 19:04:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:12,866 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 287 transitions. [2022-01-31 19:04:12,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 27 states have internal predecessors, (167), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:04:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 287 transitions. [2022-01-31 19:04:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-01-31 19:04:12,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:12,867 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:12,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 19:04:12,868 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash -761108630, now seen corresponding path program 43 times [2022-01-31 19:04:12,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885701860] [2022-01-31 19:04:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:12,870 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:12,870 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:12,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:12,871 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:04:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:04:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:04:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:04:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:04:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:04:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:04:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:04:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:04:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:04:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:04:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:04:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:04:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:04:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:04:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:04:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:04:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:04:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:04:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:04:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:04:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:04:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:13,810 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885701860] [2022-01-31 19:04:13,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [885701860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:13,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:13,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 19:04:13,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020117885] [2022-01-31 19:04:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:13,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 19:04:13,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 19:04:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1051, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:04:13,811 INFO L87 Difference]: Start difference. First operand 285 states and 287 transitions. Second operand has 34 states, 33 states have (on average 5.181818181818182) internal successors, (171), 32 states have internal predecessors, (171), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:04:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:20,801 INFO L93 Difference]: Finished difference Result 300 states and 303 transitions. [2022-01-31 19:04:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 19:04:20,801 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.181818181818182) internal successors, (171), 32 states have internal predecessors, (171), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 282 [2022-01-31 19:04:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:20,803 INFO L225 Difference]: With dead ends: 300 [2022-01-31 19:04:20,803 INFO L226 Difference]: Without dead ends: 298 [2022-01-31 19:04:20,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3204 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2980, Invalid=14050, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 19:04:20,804 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 163 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 4780 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 4923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 4780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:20,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 850 Invalid, 4923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 4780 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-31 19:04:20,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-31 19:04:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 293. [2022-01-31 19:04:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 241 states have (on average 1.012448132780083) internal successors, (244), 242 states have internal predecessors, (244), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:04:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 295 transitions. [2022-01-31 19:04:20,927 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 295 transitions. Word has length 282 [2022-01-31 19:04:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:20,928 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 295 transitions. [2022-01-31 19:04:20,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.181818181818182) internal successors, (171), 32 states have internal predecessors, (171), 24 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 19:04:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 295 transitions. [2022-01-31 19:04:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-31 19:04:20,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:20,929 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:20,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 19:04:20,929 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1211990817, now seen corresponding path program 44 times [2022-01-31 19:04:20,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:20,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688553301] [2022-01-31 19:04:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:20,931 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:20,931 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:20,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:20,933 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 19:04:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:04:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:04:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:04:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:04:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:04:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:04:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:04:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:04:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:04:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:04:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:04:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:04:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:04:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:04:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:04:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:04:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:04:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:04:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:04:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:04:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:04:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:04:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:21,279 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:21,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688553301] [2022-01-31 19:04:21,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1688553301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:21,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:21,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 19:04:21,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165482975] [2022-01-31 19:04:21,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:21,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 19:04:21,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 19:04:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2022-01-31 19:04:21,281 INFO L87 Difference]: Start difference. First operand 293 states and 295 transitions. Second operand has 29 states, 29 states have (on average 6.0) internal successors, (174), 28 states have internal predecessors, (174), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:04:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:22,030 INFO L93 Difference]: Finished difference Result 502 states and 507 transitions. [2022-01-31 19:04:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 19:04:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.0) internal successors, (174), 28 states have internal predecessors, (174), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 290 [2022-01-31 19:04:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:22,031 INFO L225 Difference]: With dead ends: 502 [2022-01-31 19:04:22,031 INFO L226 Difference]: Without dead ends: 299 [2022-01-31 19:04:22,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=986, Invalid=1876, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:04:22,032 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 72 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:22,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 161 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:04:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-31 19:04:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2022-01-31 19:04:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 245 states have (on average 1.0122448979591836) internal successors, (248), 246 states have internal predecessors, (248), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:04:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 299 transitions. [2022-01-31 19:04:22,146 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 299 transitions. Word has length 290 [2022-01-31 19:04:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:22,146 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 299 transitions. [2022-01-31 19:04:22,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.0) internal successors, (174), 28 states have internal predecessors, (174), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:04:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 299 transitions. [2022-01-31 19:04:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-31 19:04:22,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:22,147 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:22,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 19:04:22,147 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:22,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2020204828, now seen corresponding path program 45 times [2022-01-31 19:04:22,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:22,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454684307] [2022-01-31 19:04:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:22,149 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:22,149 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:22,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:22,151 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:04:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:04:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:04:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:04:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:04:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:04:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:04:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:04:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:04:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:04:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:04:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:04:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:04:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:04:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:04:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:04:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:04:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:04:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:04:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:04:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:04:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:04:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:04:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:23,150 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454684307] [2022-01-31 19:04:23,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1454684307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:23,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:23,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:04:23,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486476624] [2022-01-31 19:04:23,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:23,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:04:23,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:23,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:04:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1117, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:04:23,151 INFO L87 Difference]: Start difference. First operand 297 states and 299 transitions. Second operand has 35 states, 34 states have (on average 5.235294117647059) internal successors, (178), 33 states have internal predecessors, (178), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:04:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:30,523 INFO L93 Difference]: Finished difference Result 310 states and 313 transitions. [2022-01-31 19:04:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-31 19:04:30,524 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.235294117647059) internal successors, (178), 33 states have internal predecessors, (178), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 294 [2022-01-31 19:04:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:30,525 INFO L225 Difference]: With dead ends: 310 [2022-01-31 19:04:30,525 INFO L226 Difference]: Without dead ends: 308 [2022-01-31 19:04:30,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3345 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3015, Invalid=14807, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 19:04:30,526 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 164 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:30,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 888 Invalid, 5198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-31 19:04:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-31 19:04:30,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 305. [2022-01-31 19:04:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 252 states have internal predecessors, (254), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:04:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 307 transitions. [2022-01-31 19:04:30,650 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 307 transitions. Word has length 294 [2022-01-31 19:04:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:30,651 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 307 transitions. [2022-01-31 19:04:30,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.235294117647059) internal successors, (178), 33 states have internal predecessors, (178), 25 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 19:04:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 307 transitions. [2022-01-31 19:04:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-01-31 19:04:30,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:30,652 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:30,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 19:04:30,652 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1492047149, now seen corresponding path program 46 times [2022-01-31 19:04:30,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:30,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341987605] [2022-01-31 19:04:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:30,654 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:30,654 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:30,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:30,656 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 19:04:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:04:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:04:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:04:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:04:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:04:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:04:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:04:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:04:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:04:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:04:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:04:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:04:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:04:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:04:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:04:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:04:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:04:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:04:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:04:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:04:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:04:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:04:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:04:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:31,013 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:31,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341987605] [2022-01-31 19:04:31,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [341987605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:31,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:31,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 19:04:31,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693412997] [2022-01-31 19:04:31,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:31,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 19:04:31,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 19:04:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=511, Unknown=0, NotChecked=0, Total=870 [2022-01-31 19:04:31,015 INFO L87 Difference]: Start difference. First operand 305 states and 307 transitions. Second operand has 30 states, 30 states have (on average 6.033333333333333) internal successors, (181), 29 states have internal predecessors, (181), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:04:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:31,835 INFO L93 Difference]: Finished difference Result 522 states and 527 transitions. [2022-01-31 19:04:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 19:04:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.033333333333333) internal successors, (181), 29 states have internal predecessors, (181), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 302 [2022-01-31 19:04:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:31,836 INFO L225 Difference]: With dead ends: 522 [2022-01-31 19:04:31,836 INFO L226 Difference]: Without dead ends: 311 [2022-01-31 19:04:31,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1064, Invalid=2016, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:04:31,837 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 74 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:31,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 175 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:04:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-01-31 19:04:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2022-01-31 19:04:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 255 states have (on average 1.011764705882353) internal successors, (258), 256 states have internal predecessors, (258), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:04:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 311 transitions. [2022-01-31 19:04:31,966 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 311 transitions. Word has length 302 [2022-01-31 19:04:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:31,966 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 311 transitions. [2022-01-31 19:04:31,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.033333333333333) internal successors, (181), 29 states have internal predecessors, (181), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:04:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 311 transitions. [2022-01-31 19:04:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-01-31 19:04:31,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:31,967 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:31,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 19:04:31,967 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1762748494, now seen corresponding path program 47 times [2022-01-31 19:04:31,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:31,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175761357] [2022-01-31 19:04:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:31,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:31,969 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:31,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:31,971 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:04:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:04:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:04:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:04:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:04:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:04:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:04:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:04:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:04:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:04:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:04:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:04:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:04:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:04:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:04:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:04:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:04:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:04:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:04:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:04:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:04:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:04:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:04:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:04:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:33,052 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:33,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175761357] [2022-01-31 19:04:33,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1175761357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:33,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:33,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:04:33,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093694293] [2022-01-31 19:04:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:33,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:04:33,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:04:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1185, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:04:33,053 INFO L87 Difference]: Start difference. First operand 309 states and 311 transitions. Second operand has 36 states, 35 states have (on average 5.285714285714286) internal successors, (185), 34 states have internal predecessors, (185), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:04:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:41,393 INFO L93 Difference]: Finished difference Result 324 states and 327 transitions. [2022-01-31 19:04:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-31 19:04:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 5.285714285714286) internal successors, (185), 34 states have internal predecessors, (185), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 306 [2022-01-31 19:04:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:41,394 INFO L225 Difference]: With dead ends: 324 [2022-01-31 19:04:41,394 INFO L226 Difference]: Without dead ends: 322 [2022-01-31 19:04:41,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3730 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3459, Invalid=16281, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 19:04:41,396 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 175 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 5558 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 5710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 5558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:41,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 994 Invalid, 5710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 5558 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-31 19:04:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-31 19:04:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 317. [2022-01-31 19:04:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 261 states have (on average 1.0114942528735633) internal successors, (264), 262 states have internal predecessors, (264), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:04:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 319 transitions. [2022-01-31 19:04:41,523 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 319 transitions. Word has length 306 [2022-01-31 19:04:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:41,523 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 319 transitions. [2022-01-31 19:04:41,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 5.285714285714286) internal successors, (185), 34 states have internal predecessors, (185), 26 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 19:04:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 319 transitions. [2022-01-31 19:04:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-01-31 19:04:41,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:41,525 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:41,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 19:04:41,525 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash 211771397, now seen corresponding path program 48 times [2022-01-31 19:04:41,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:41,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957004728] [2022-01-31 19:04:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:41,527 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:41,527 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:41,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:41,529 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 19:04:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:04:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:04:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:04:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:04:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:04:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:04:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:04:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:04:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:04:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:04:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:04:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:04:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:04:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:04:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:04:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:04:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:04:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:04:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:04:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:04:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:04:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:04:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:04:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:04:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:41,911 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:41,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957004728] [2022-01-31 19:04:41,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1957004728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:41,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:41,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 19:04:41,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8698688] [2022-01-31 19:04:41,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:41,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 19:04:41,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 19:04:41,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2022-01-31 19:04:41,912 INFO L87 Difference]: Start difference. First operand 317 states and 319 transitions. Second operand has 31 states, 31 states have (on average 6.064516129032258) internal successors, (188), 30 states have internal predecessors, (188), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:04:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:42,804 INFO L93 Difference]: Finished difference Result 542 states and 547 transitions. [2022-01-31 19:04:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 19:04:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.064516129032258) internal successors, (188), 30 states have internal predecessors, (188), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 314 [2022-01-31 19:04:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:42,805 INFO L225 Difference]: With dead ends: 542 [2022-01-31 19:04:42,805 INFO L226 Difference]: Without dead ends: 323 [2022-01-31 19:04:42,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1145, Invalid=2161, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:04:42,806 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 76 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:42,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 195 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:04:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-01-31 19:04:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 321. [2022-01-31 19:04:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 265 states have (on average 1.0113207547169811) internal successors, (268), 266 states have internal predecessors, (268), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:04:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 323 transitions. [2022-01-31 19:04:42,943 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 323 transitions. Word has length 314 [2022-01-31 19:04:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:42,943 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 323 transitions. [2022-01-31 19:04:42,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.064516129032258) internal successors, (188), 30 states have internal predecessors, (188), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:04:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 323 transitions. [2022-01-31 19:04:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-31 19:04:42,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:42,944 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:42,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 19:04:42,945 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1608499968, now seen corresponding path program 49 times [2022-01-31 19:04:42,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:42,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341158203] [2022-01-31 19:04:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:42,946 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:42,947 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:42,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:42,948 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:04:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:04:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:04:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:04:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:04:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:04:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:04:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:04:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:04:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:04:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:04:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:04:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:04:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:04:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:04:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:04:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:04:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:04:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:04:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:04:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:04:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:04:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:04:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:04:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:04:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:44,204 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341158203] [2022-01-31 19:04:44,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [341158203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:44,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:44,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 19:04:44,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547003196] [2022-01-31 19:04:44,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:44,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 19:04:44,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 19:04:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1255, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:04:44,206 INFO L87 Difference]: Start difference. First operand 321 states and 323 transitions. Second operand has 37 states, 36 states have (on average 5.333333333333333) internal successors, (192), 35 states have internal predecessors, (192), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:04:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:52,882 INFO L93 Difference]: Finished difference Result 334 states and 337 transitions. [2022-01-31 19:04:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 19:04:52,882 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.333333333333333) internal successors, (192), 35 states have internal predecessors, (192), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 318 [2022-01-31 19:04:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:52,883 INFO L225 Difference]: With dead ends: 334 [2022-01-31 19:04:52,883 INFO L226 Difference]: Without dead ends: 332 [2022-01-31 19:04:52,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3881 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3496, Invalid=17096, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 19:04:52,885 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 176 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 5577 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 5735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 5577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:52,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 981 Invalid, 5735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 5577 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-31 19:04:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-01-31 19:04:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 329. [2022-01-31 19:04:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 271 states have (on average 1.011070110701107) internal successors, (274), 272 states have internal predecessors, (274), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 19:04:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 331 transitions. [2022-01-31 19:04:53,030 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 331 transitions. Word has length 318 [2022-01-31 19:04:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:53,030 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 331 transitions. [2022-01-31 19:04:53,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.333333333333333) internal successors, (192), 35 states have internal predecessors, (192), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-31 19:04:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 331 transitions. [2022-01-31 19:04:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-31 19:04:53,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:53,032 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:53,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 19:04:53,032 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash 422535863, now seen corresponding path program 50 times [2022-01-31 19:04:53,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:53,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237119390] [2022-01-31 19:04:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:53,034 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:53,034 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:53,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:53,036 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 19:04:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:04:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:04:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:04:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:04:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:04:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:04:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:04:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:04:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:04:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:04:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:04:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:04:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:04:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:04:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:04:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:04:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:04:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:04:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:04:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:04:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:04:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:04:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:04:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:04:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:04:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:53,433 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237119390] [2022-01-31 19:04:53,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1237119390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:53,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:53,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 19:04:53,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931392288] [2022-01-31 19:04:53,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:53,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 19:04:53,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 19:04:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2022-01-31 19:04:53,435 INFO L87 Difference]: Start difference. First operand 329 states and 331 transitions. Second operand has 32 states, 32 states have (on average 6.09375) internal successors, (195), 31 states have internal predecessors, (195), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:04:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:04:54,318 INFO L93 Difference]: Finished difference Result 562 states and 567 transitions. [2022-01-31 19:04:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 19:04:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.09375) internal successors, (195), 31 states have internal predecessors, (195), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 326 [2022-01-31 19:04:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:04:54,320 INFO L225 Difference]: With dead ends: 562 [2022-01-31 19:04:54,320 INFO L226 Difference]: Without dead ends: 335 [2022-01-31 19:04:54,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1229, Invalid=2311, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 19:04:54,321 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 78 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:04:54,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 179 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 19:04:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-01-31 19:04:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2022-01-31 19:04:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 275 states have (on average 1.010909090909091) internal successors, (278), 276 states have internal predecessors, (278), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 19:04:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 335 transitions. [2022-01-31 19:04:54,474 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 335 transitions. Word has length 326 [2022-01-31 19:04:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:04:54,474 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 335 transitions. [2022-01-31 19:04:54,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.09375) internal successors, (195), 31 states have internal predecessors, (195), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:04:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 335 transitions. [2022-01-31 19:04:54,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-01-31 19:04:54,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:04:54,476 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:04:54,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 19:04:54,476 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:04:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:04:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash -524443854, now seen corresponding path program 51 times [2022-01-31 19:04:54,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:04:54,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214487399] [2022-01-31 19:04:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:04:54,478 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:04:54,478 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:04:54,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:04:54,480 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:04:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:04:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:04:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:04:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:04:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:04:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:04:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:04:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:04:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:04:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:04:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:04:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:04:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:04:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:04:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:04:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:04:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:04:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:04:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:04:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:04:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:04:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:04:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:04:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:04:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:04:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:04:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:04:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:04:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:04:55,668 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:04:55,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214487399] [2022-01-31 19:04:55,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [214487399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:04:55,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:04:55,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:04:55,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036773487] [2022-01-31 19:04:55,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:04:55,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:04:55,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:04:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:04:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1327, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:04:55,669 INFO L87 Difference]: Start difference. First operand 333 states and 335 transitions. Second operand has 38 states, 37 states have (on average 5.378378378378378) internal successors, (199), 36 states have internal predecessors, (199), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:05:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:05,724 INFO L93 Difference]: Finished difference Result 346 states and 349 transitions. [2022-01-31 19:05:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 19:05:05,724 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.378378378378378) internal successors, (199), 36 states have internal predecessors, (199), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 330 [2022-01-31 19:05:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:05,725 INFO L225 Difference]: With dead ends: 346 [2022-01-31 19:05:05,726 INFO L226 Difference]: Without dead ends: 344 [2022-01-31 19:05:05,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4164 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3750, Invalid=18302, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 19:05:05,727 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 175 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 6523 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 6681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 6523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:05,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1107 Invalid, 6681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 6523 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-31 19:05:05,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-31 19:05:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2022-01-31 19:05:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 281 states have (on average 1.01067615658363) internal successors, (284), 282 states have internal predecessors, (284), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 19:05:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 343 transitions. [2022-01-31 19:05:05,881 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 343 transitions. Word has length 330 [2022-01-31 19:05:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:05,881 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 343 transitions. [2022-01-31 19:05:05,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.378378378378378) internal successors, (199), 36 states have internal predecessors, (199), 28 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 19:05:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 343 transitions. [2022-01-31 19:05:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-31 19:05:05,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:05,882 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:05,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 19:05:05,883 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:05,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1800899863, now seen corresponding path program 52 times [2022-01-31 19:05:05,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:05,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834617639] [2022-01-31 19:05:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:05,885 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:05,885 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:05,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:05,887 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 19:05:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:05:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:05:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:05:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:05:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:05:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:05:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:05:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:05:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:05:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:05:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:05:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:05:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:05:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:05:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:05:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:05:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:05:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:05:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:05:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:05:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:05:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:05:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:05:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:05:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:05:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:05:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:06,316 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834617639] [2022-01-31 19:05:06,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [834617639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:06,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 19:05:06,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320584318] [2022-01-31 19:05:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:06,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 19:05:06,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 19:05:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=613, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 19:05:06,317 INFO L87 Difference]: Start difference. First operand 341 states and 343 transitions. Second operand has 33 states, 33 states have (on average 6.121212121212121) internal successors, (202), 32 states have internal predecessors, (202), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 19:05:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:07,252 INFO L93 Difference]: Finished difference Result 582 states and 587 transitions. [2022-01-31 19:05:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 19:05:07,253 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.121212121212121) internal successors, (202), 32 states have internal predecessors, (202), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 338 [2022-01-31 19:05:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:07,254 INFO L225 Difference]: With dead ends: 582 [2022-01-31 19:05:07,254 INFO L226 Difference]: Without dead ends: 347 [2022-01-31 19:05:07,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1316, Invalid=2466, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 19:05:07,255 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 80 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:07,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 199 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:05:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-31 19:05:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2022-01-31 19:05:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 285 states have (on average 1.0105263157894737) internal successors, (288), 286 states have internal predecessors, (288), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 19:05:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 347 transitions. [2022-01-31 19:05:07,415 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 347 transitions. Word has length 338 [2022-01-31 19:05:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:07,415 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 347 transitions. [2022-01-31 19:05:07,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.121212121212121) internal successors, (202), 32 states have internal predecessors, (202), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 19:05:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 347 transitions. [2022-01-31 19:05:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-01-31 19:05:07,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:07,417 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:07,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 19:05:07,417 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash -978268444, now seen corresponding path program 53 times [2022-01-31 19:05:07,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:07,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224352874] [2022-01-31 19:05:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:07,419 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:07,419 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:07,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:07,421 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:05:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:05:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:05:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:05:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:05:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:05:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:05:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:05:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:05:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:05:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:05:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:05:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:05:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:05:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:05:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:05:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:05:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:05:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:05:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:05:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:05:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:05:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:05:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:05:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:05:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:05:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:05:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:08,694 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:08,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224352874] [2022-01-31 19:05:08,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224352874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:08,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:08,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:05:08,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296573022] [2022-01-31 19:05:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:08,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:05:08,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:08,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:05:08,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1328, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:05:08,695 INFO L87 Difference]: Start difference. First operand 345 states and 347 transitions. Second operand has 38 states, 37 states have (on average 5.5675675675675675) internal successors, (206), 36 states have internal predecessors, (206), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 19:05:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:19,326 INFO L93 Difference]: Finished difference Result 358 states and 361 transitions. [2022-01-31 19:05:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-31 19:05:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.5675675675675675) internal successors, (206), 36 states have internal predecessors, (206), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 342 [2022-01-31 19:05:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:19,328 INFO L225 Difference]: With dead ends: 358 [2022-01-31 19:05:19,328 INFO L226 Difference]: Without dead ends: 356 [2022-01-31 19:05:19,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4448 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3984, Invalid=19272, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 19:05:19,329 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 181 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 6484 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 6647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 6484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:19,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1112 Invalid, 6647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 6484 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-31 19:05:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-01-31 19:05:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 353. [2022-01-31 19:05:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 291 states have (on average 1.0103092783505154) internal successors, (294), 292 states have internal predecessors, (294), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:05:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 355 transitions. [2022-01-31 19:05:19,497 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 355 transitions. Word has length 342 [2022-01-31 19:05:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:19,497 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 355 transitions. [2022-01-31 19:05:19,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.5675675675675675) internal successors, (206), 36 states have internal predecessors, (206), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-31 19:05:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 355 transitions. [2022-01-31 19:05:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-01-31 19:05:19,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:19,499 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:19,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 19:05:19,499 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2123485339, now seen corresponding path program 54 times [2022-01-31 19:05:19,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163179419] [2022-01-31 19:05:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:19,501 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:19,501 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:19,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:19,503 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 19:05:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:05:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:05:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:05:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:05:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:05:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:05:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:05:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:05:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:05:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:05:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:05:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:05:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:05:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:05:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:05:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:05:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:05:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:05:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:05:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:05:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:05:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:05:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:05:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:05:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:05:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:05:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:05:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:19,928 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163179419] [2022-01-31 19:05:19,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1163179419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:19,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:19,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 19:05:19,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623929696] [2022-01-31 19:05:19,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:19,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 19:05:19,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 19:05:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 19:05:19,929 INFO L87 Difference]: Start difference. First operand 353 states and 355 transitions. Second operand has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 33 states have internal predecessors, (209), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 19:05:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:20,923 INFO L93 Difference]: Finished difference Result 602 states and 607 transitions. [2022-01-31 19:05:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 19:05:20,924 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 33 states have internal predecessors, (209), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 350 [2022-01-31 19:05:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:20,925 INFO L225 Difference]: With dead ends: 602 [2022-01-31 19:05:20,925 INFO L226 Difference]: Without dead ends: 359 [2022-01-31 19:05:20,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1406, Invalid=2626, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 19:05:20,926 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 82 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:20,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 198 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:05:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-31 19:05:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-01-31 19:05:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 295 states have (on average 1.0101694915254238) internal successors, (298), 296 states have internal predecessors, (298), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:05:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 359 transitions. [2022-01-31 19:05:21,097 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 359 transitions. Word has length 350 [2022-01-31 19:05:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:21,097 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 359 transitions. [2022-01-31 19:05:21,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 33 states have internal predecessors, (209), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 19:05:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 359 transitions. [2022-01-31 19:05:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-01-31 19:05:21,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:21,098 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:21,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 19:05:21,099 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash -782169066, now seen corresponding path program 55 times [2022-01-31 19:05:21,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:21,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838787278] [2022-01-31 19:05:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:21,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:21,101 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:21,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:21,103 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:05:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:05:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:05:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:05:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:05:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:05:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:05:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:05:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:05:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:05:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:05:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:05:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:05:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:05:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:05:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:05:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:05:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:05:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:05:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:05:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:05:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:05:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:05:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:05:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:05:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:05:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:05:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:05:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:22,443 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:22,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838787278] [2022-01-31 19:05:22,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1838787278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:22,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:22,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:05:22,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600945656] [2022-01-31 19:05:22,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:22,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:05:22,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:05:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1402, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:05:22,444 INFO L87 Difference]: Start difference. First operand 357 states and 359 transitions. Second operand has 39 states, 38 states have (on average 5.605263157894737) internal successors, (213), 37 states have internal predecessors, (213), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 19:05:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:33,993 INFO L93 Difference]: Finished difference Result 372 states and 375 transitions. [2022-01-31 19:05:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-31 19:05:33,993 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.605263157894737) internal successors, (213), 37 states have internal predecessors, (213), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 354 [2022-01-31 19:05:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:33,995 INFO L225 Difference]: With dead ends: 372 [2022-01-31 19:05:33,995 INFO L226 Difference]: Without dead ends: 370 [2022-01-31 19:05:33,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4894 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=4494, Invalid=20946, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 19:05:33,996 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 200 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6818 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 6989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 6818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:33,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1201 Invalid, 6989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 6818 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-31 19:05:33,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-31 19:05:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 365. [2022-01-31 19:05:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 301 states have (on average 1.0099667774086378) internal successors, (304), 302 states have internal predecessors, (304), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 19:05:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 367 transitions. [2022-01-31 19:05:34,174 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 367 transitions. Word has length 354 [2022-01-31 19:05:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:34,174 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 367 transitions. [2022-01-31 19:05:34,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.605263157894737) internal successors, (213), 37 states have internal predecessors, (213), 30 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 19:05:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 367 transitions. [2022-01-31 19:05:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-01-31 19:05:34,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:34,176 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:34,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 19:05:34,176 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 504544205, now seen corresponding path program 56 times [2022-01-31 19:05:34,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:34,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067500130] [2022-01-31 19:05:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:34,178 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:34,178 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:34,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:34,180 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 19:05:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:05:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:05:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:05:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:05:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:05:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:05:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:05:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:05:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:05:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:05:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:05:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:05:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:05:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:05:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:05:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:05:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:05:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:05:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:05:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:05:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:05:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:05:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:05:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:05:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:05:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:05:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:05:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:05:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:34,663 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:34,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067500130] [2022-01-31 19:05:34,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2067500130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:34,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:34,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 19:05:34,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223686717] [2022-01-31 19:05:34,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:34,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 19:05:34,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 19:05:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 19:05:34,664 INFO L87 Difference]: Start difference. First operand 365 states and 367 transitions. Second operand has 35 states, 35 states have (on average 6.171428571428572) internal successors, (216), 34 states have internal predecessors, (216), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:05:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:35,824 INFO L93 Difference]: Finished difference Result 622 states and 627 transitions. [2022-01-31 19:05:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 19:05:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.171428571428572) internal successors, (216), 34 states have internal predecessors, (216), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 362 [2022-01-31 19:05:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:35,826 INFO L225 Difference]: With dead ends: 622 [2022-01-31 19:05:35,826 INFO L226 Difference]: Without dead ends: 371 [2022-01-31 19:05:35,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1499, Invalid=2791, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 19:05:35,827 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 84 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:35,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 261 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:05:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-31 19:05:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2022-01-31 19:05:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 305 states have (on average 1.0098360655737706) internal successors, (308), 306 states have internal predecessors, (308), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 19:05:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 371 transitions. [2022-01-31 19:05:36,008 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 371 transitions. Word has length 362 [2022-01-31 19:05:36,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:36,008 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 371 transitions. [2022-01-31 19:05:36,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.171428571428572) internal successors, (216), 34 states have internal predecessors, (216), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:05:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 371 transitions. [2022-01-31 19:05:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-01-31 19:05:36,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:36,010 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:36,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 19:05:36,010 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2111149768, now seen corresponding path program 57 times [2022-01-31 19:05:36,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:36,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098495354] [2022-01-31 19:05:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:36,012 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:36,012 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:36,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:36,015 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:05:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:05:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:05:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:05:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:05:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:05:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:05:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:05:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:05:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:05:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:05:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:05:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:05:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:05:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:05:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:05:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:05:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:05:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:05:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:05:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:05:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:05:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:05:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:05:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:05:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:05:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:05:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:05:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:05:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:37,477 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:37,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098495354] [2022-01-31 19:05:37,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2098495354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:37,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:37,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 19:05:37,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136122184] [2022-01-31 19:05:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:37,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 19:05:37,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 19:05:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1555, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:05:37,488 INFO L87 Difference]: Start difference. First operand 369 states and 371 transitions. Second operand has 41 states, 40 states have (on average 5.5) internal successors, (220), 39 states have internal predecessors, (220), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:05:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:49,541 INFO L93 Difference]: Finished difference Result 382 states and 385 transitions. [2022-01-31 19:05:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-31 19:05:49,541 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 5.5) internal successors, (220), 39 states have internal predecessors, (220), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 366 [2022-01-31 19:05:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:49,542 INFO L225 Difference]: With dead ends: 382 [2022-01-31 19:05:49,542 INFO L226 Difference]: Without dead ends: 380 [2022-01-31 19:05:49,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5073 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=4566, Invalid=22166, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 19:05:49,544 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 259 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 7131 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 7369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 7131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:49,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 1269 Invalid, 7369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 7131 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-31 19:05:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-31 19:05:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 377. [2022-01-31 19:05:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 311 states have (on average 1.0096463022508038) internal successors, (314), 312 states have internal predecessors, (314), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:05:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 379 transitions. [2022-01-31 19:05:49,737 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 379 transitions. Word has length 366 [2022-01-31 19:05:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:49,738 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 379 transitions. [2022-01-31 19:05:49,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 5.5) internal successors, (220), 39 states have internal predecessors, (220), 31 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-31 19:05:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 379 transitions. [2022-01-31 19:05:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-01-31 19:05:49,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:49,739 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:49,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 19:05:49,739 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:49,740 INFO L85 PathProgramCache]: Analyzing trace with hash 301102207, now seen corresponding path program 58 times [2022-01-31 19:05:49,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:49,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548902206] [2022-01-31 19:05:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:49,742 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:49,742 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:49,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:49,744 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 19:05:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:05:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:05:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:05:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:05:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:05:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:05:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:05:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:05:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:05:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:05:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:05:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:05:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:05:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:05:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:05:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:05:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:05:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:05:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:05:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:05:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:05:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:05:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:05:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:05:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:05:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:05:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:05:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:05:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:05:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:50,263 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:50,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548902206] [2022-01-31 19:05:50,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [548902206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:50,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:50,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 19:05:50,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622822792] [2022-01-31 19:05:50,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:50,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 19:05:50,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 19:05:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=724, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 19:05:50,264 INFO L87 Difference]: Start difference. First operand 377 states and 379 transitions. Second operand has 36 states, 36 states have (on average 6.194444444444445) internal successors, (223), 35 states have internal predecessors, (223), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 19:05:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:05:51,425 INFO L93 Difference]: Finished difference Result 642 states and 647 transitions. [2022-01-31 19:05:51,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 19:05:51,425 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.194444444444445) internal successors, (223), 35 states have internal predecessors, (223), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 374 [2022-01-31 19:05:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:05:51,427 INFO L225 Difference]: With dead ends: 642 [2022-01-31 19:05:51,427 INFO L226 Difference]: Without dead ends: 383 [2022-01-31 19:05:51,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1595, Invalid=2961, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 19:05:51,428 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 86 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:05:51,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 235 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:05:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-31 19:05:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381. [2022-01-31 19:05:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 315 states have (on average 1.0095238095238095) internal successors, (318), 316 states have internal predecessors, (318), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:05:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 383 transitions. [2022-01-31 19:05:51,623 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 383 transitions. Word has length 374 [2022-01-31 19:05:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:05:51,623 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 383 transitions. [2022-01-31 19:05:51,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.194444444444445) internal successors, (223), 35 states have internal predecessors, (223), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 19:05:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 383 transitions. [2022-01-31 19:05:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-01-31 19:05:51,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:05:51,624 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:05:51,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 19:05:51,625 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:05:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:05:51,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1286975226, now seen corresponding path program 59 times [2022-01-31 19:05:51,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:05:51,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890094719] [2022-01-31 19:05:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:05:51,627 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:05:51,627 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:05:51,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:05:51,629 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:05:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:05:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:05:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:05:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:05:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:05:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:05:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:05:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:05:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:05:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:05:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:05:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:05:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:05:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:05:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:05:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:05:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:05:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:05:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:05:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:05:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:05:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:05:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:05:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:05:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:05:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:05:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:05:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:05:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:05:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:05:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:05:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:05:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:05:53,092 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:05:53,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890094719] [2022-01-31 19:05:53,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [890094719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:05:53,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:05:53,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:05:53,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761535704] [2022-01-31 19:05:53,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:05:53,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:05:53,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:05:53,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:05:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1635, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:05:53,093 INFO L87 Difference]: Start difference. First operand 381 states and 383 transitions. Second operand has 42 states, 41 states have (on average 5.536585365853658) internal successors, (227), 40 states have internal predecessors, (227), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 19:06:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:06:06,895 INFO L93 Difference]: Finished difference Result 394 states and 397 transitions. [2022-01-31 19:06:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-31 19:06:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.536585365853658) internal successors, (227), 40 states have internal predecessors, (227), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 378 [2022-01-31 19:06:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:06:06,897 INFO L225 Difference]: With dead ends: 394 [2022-01-31 19:06:06,897 INFO L226 Difference]: Without dead ends: 392 [2022-01-31 19:06:06,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5396 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=4856, Invalid=23536, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 19:06:06,899 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 200 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 7959 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 8139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 7959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:06:06,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1354 Invalid, 8139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 7959 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-31 19:06:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-31 19:06:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 389. [2022-01-31 19:06:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 321 states have (on average 1.0093457943925233) internal successors, (324), 322 states have internal predecessors, (324), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:06:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 391 transitions. [2022-01-31 19:06:07,101 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 391 transitions. Word has length 378 [2022-01-31 19:06:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:06:07,101 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 391 transitions. [2022-01-31 19:06:07,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.536585365853658) internal successors, (227), 40 states have internal predecessors, (227), 32 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 19:06:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 391 transitions. [2022-01-31 19:06:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-01-31 19:06:07,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:06:07,103 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:06:07,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 19:06:07,103 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:06:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:06:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1620589233, now seen corresponding path program 60 times [2022-01-31 19:06:07,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:06:07,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449203646] [2022-01-31 19:06:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:06:07,105 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:06:07,105 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:06:07,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:06:07,107 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:06:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:06:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 19:06:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:06:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:06:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:06:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:06:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:06:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:06:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:06:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:06:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:06:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:06:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:06:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:06:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:06:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:06:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:06:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:06:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:06:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:06:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:06:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:06:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:06:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:06:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:06:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:06:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:06:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:06:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:06:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:06:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:06:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:06:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:06:07,628 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:06:07,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449203646] [2022-01-31 19:06:07,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1449203646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:06:07,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:06:07,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 19:06:07,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432672170] [2022-01-31 19:06:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:06:07,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 19:06:07,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:06:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 19:06:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 19:06:07,630 INFO L87 Difference]: Start difference. First operand 389 states and 391 transitions. Second operand has 37 states, 37 states have (on average 6.216216216216216) internal successors, (230), 36 states have internal predecessors, (230), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:06:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:06:08,763 INFO L93 Difference]: Finished difference Result 662 states and 667 transitions. [2022-01-31 19:06:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 19:06:08,763 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.216216216216216) internal successors, (230), 36 states have internal predecessors, (230), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 386 [2022-01-31 19:06:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:06:08,765 INFO L225 Difference]: With dead ends: 662 [2022-01-31 19:06:08,765 INFO L226 Difference]: Without dead ends: 395 [2022-01-31 19:06:08,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1694, Invalid=3136, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 19:06:08,766 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 88 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 19:06:08,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 206 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 19:06:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-31 19:06:08,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2022-01-31 19:06:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 325 states have (on average 1.0092307692307692) internal successors, (328), 326 states have internal predecessors, (328), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:06:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 395 transitions. [2022-01-31 19:06:08,974 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 395 transitions. Word has length 386 [2022-01-31 19:06:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:06:08,974 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 395 transitions. [2022-01-31 19:06:08,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.216216216216216) internal successors, (230), 36 states have internal predecessors, (230), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:06:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 395 transitions. [2022-01-31 19:06:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-01-31 19:06:08,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:06:08,976 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:06:08,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 19:06:08,976 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:06:08,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:06:08,977 INFO L85 PathProgramCache]: Analyzing trace with hash -683109204, now seen corresponding path program 61 times [2022-01-31 19:06:08,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:06:08,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649069100] [2022-01-31 19:06:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:06:08,979 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:06:08,979 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:06:08,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:06:08,981 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:06:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:06:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:06:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:06:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:06:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:06:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:06:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:06:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:06:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:06:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:06:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:06:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:06:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:06:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:06:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:06:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:06:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:06:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:06:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:06:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:06:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:06:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:06:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:06:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:06:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:06:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:06:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:06:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:06:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:06:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:06:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:06:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:06:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:06:10,509 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:06:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649069100] [2022-01-31 19:06:10,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [649069100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:06:10,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:06:10,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:06:10,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923047117] [2022-01-31 19:06:10,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:06:10,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:06:10,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:06:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:06:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1636, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:06:10,510 INFO L87 Difference]: Start difference. First operand 393 states and 395 transitions. Second operand has 42 states, 41 states have (on average 5.7073170731707314) internal successors, (234), 40 states have internal predecessors, (234), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:06:25,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:06:25,009 INFO L93 Difference]: Finished difference Result 408 states and 411 transitions. [2022-01-31 19:06:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-31 19:06:25,010 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.7073170731707314) internal successors, (234), 40 states have internal predecessors, (234), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 390 [2022-01-31 19:06:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:06:25,011 INFO L225 Difference]: With dead ends: 408 [2022-01-31 19:06:25,011 INFO L226 Difference]: Without dead ends: 406 [2022-01-31 19:06:25,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5878 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=5385, Invalid=25065, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 19:06:25,013 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 216 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 8187 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 8373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 8187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:06:25,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 1448 Invalid, 8373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 8187 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-01-31 19:06:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-31 19:06:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 401. [2022-01-31 19:06:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 331 states have (on average 1.0090634441087614) internal successors, (334), 332 states have internal predecessors, (334), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 19:06:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 403 transitions. [2022-01-31 19:06:25,231 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 403 transitions. Word has length 390 [2022-01-31 19:06:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:06:25,231 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 403 transitions. [2022-01-31 19:06:25,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.7073170731707314) internal successors, (234), 40 states have internal predecessors, (234), 33 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-31 19:06:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 403 transitions. [2022-01-31 19:06:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-01-31 19:06:25,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:06:25,233 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:06:25,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 19:06:25,233 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:06:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:06:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2012524957, now seen corresponding path program 62 times [2022-01-31 19:06:25,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:06:25,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836253787] [2022-01-31 19:06:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:06:25,236 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:06:25,236 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:06:25,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:06:25,238 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:06:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:06:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 19:06:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:06:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:06:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:06:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:06:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:06:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:06:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:06:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:06:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:06:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:06:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:06:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:06:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:06:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:06:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:06:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:06:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:06:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:06:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:06:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:06:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:06:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:06:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:06:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:06:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:06:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:06:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:06:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:06:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:06:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:06:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:06:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:06:25,799 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:06:25,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836253787] [2022-01-31 19:06:25,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1836253787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:06:25,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:06:25,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 19:06:25,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965779041] [2022-01-31 19:06:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:06:25,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 19:06:25,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:06:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 19:06:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 19:06:25,801 INFO L87 Difference]: Start difference. First operand 401 states and 403 transitions. Second operand has 38 states, 38 states have (on average 6.2368421052631575) internal successors, (237), 37 states have internal predecessors, (237), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:06:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:06:27,062 INFO L93 Difference]: Finished difference Result 682 states and 687 transitions. [2022-01-31 19:06:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 19:06:27,062 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.2368421052631575) internal successors, (237), 37 states have internal predecessors, (237), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 398 [2022-01-31 19:06:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:06:27,064 INFO L225 Difference]: With dead ends: 682 [2022-01-31 19:06:27,064 INFO L226 Difference]: Without dead ends: 407 [2022-01-31 19:06:27,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1796, Invalid=3316, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 19:06:27,065 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 90 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:06:27,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 249 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:06:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-31 19:06:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-01-31 19:06:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 335 states have (on average 1.008955223880597) internal successors, (338), 336 states have internal predecessors, (338), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 19:06:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 407 transitions. [2022-01-31 19:06:27,286 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 407 transitions. Word has length 398 [2022-01-31 19:06:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:06:27,286 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 407 transitions. [2022-01-31 19:06:27,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.2368421052631575) internal successors, (237), 37 states have internal predecessors, (237), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:06:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 407 transitions. [2022-01-31 19:06:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-01-31 19:06:27,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:06:27,288 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:06:27,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 19:06:27,288 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:06:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:06:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -562722850, now seen corresponding path program 63 times [2022-01-31 19:06:27,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:06:27,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570211773] [2022-01-31 19:06:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:06:27,290 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:06:27,290 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:06:27,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:06:27,293 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:06:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:06:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:06:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:06:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:06:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:06:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:06:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:06:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:06:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:06:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:06:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:06:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:06:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:06:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:06:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:06:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:06:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:06:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:06:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:06:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:06:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:06:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:06:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:06:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:06:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:06:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:06:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:06:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:06:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:06:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:06:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:06:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:06:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:06:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:06:28,872 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:06:28,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570211773] [2022-01-31 19:06:28,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1570211773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:06:28,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:06:28,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 19:06:28,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650912944] [2022-01-31 19:06:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:06:28,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 19:06:28,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:06:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 19:06:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1801, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:06:28,874 INFO L87 Difference]: Start difference. First operand 405 states and 407 transitions. Second operand has 44 states, 43 states have (on average 5.604651162790698) internal successors, (241), 42 states have internal predecessors, (241), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:06:44,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:06:44,886 INFO L93 Difference]: Finished difference Result 418 states and 421 transitions. [2022-01-31 19:06:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-31 19:06:44,887 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 5.604651162790698) internal successors, (241), 42 states have internal predecessors, (241), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 402 [2022-01-31 19:06:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:06:44,888 INFO L225 Difference]: With dead ends: 418 [2022-01-31 19:06:44,888 INFO L226 Difference]: Without dead ends: 416 [2022-01-31 19:06:44,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6072 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=5463, Invalid=26399, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 19:06:44,890 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 278 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 8919 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 9174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 8919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:06:44,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1531 Invalid, 9174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 8919 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-01-31 19:06:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-01-31 19:06:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 413. [2022-01-31 19:06:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 341 states have (on average 1.0087976539589443) internal successors, (344), 342 states have internal predecessors, (344), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 19:06:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 415 transitions. [2022-01-31 19:06:45,124 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 415 transitions. Word has length 402 [2022-01-31 19:06:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:06:45,125 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 415 transitions. [2022-01-31 19:06:45,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 5.604651162790698) internal successors, (241), 42 states have internal predecessors, (241), 34 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 19:06:45,125 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 415 transitions. [2022-01-31 19:06:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-01-31 19:06:45,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:06:45,127 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:06:45,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 19:06:45,127 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:06:45,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:06:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1913458795, now seen corresponding path program 64 times [2022-01-31 19:06:45,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:06:45,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282929325] [2022-01-31 19:06:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:06:45,129 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:06:45,129 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:06:45,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:06:45,131 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:06:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:06:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 19:06:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:06:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:06:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:06:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:06:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:06:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:06:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:06:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:06:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:06:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:06:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:06:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:06:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:06:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:06:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:06:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:06:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:06:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:06:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:06:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:06:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:06:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:06:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:06:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:06:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:06:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:06:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:06:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:06:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:06:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:06:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:06:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:06:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:06:45,686 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:06:45,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282929325] [2022-01-31 19:06:45,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1282929325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:06:45,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:06:45,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 19:06:45,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458481557] [2022-01-31 19:06:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:06:45,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 19:06:45,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:06:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 19:06:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=844, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 19:06:45,688 INFO L87 Difference]: Start difference. First operand 413 states and 415 transitions. Second operand has 39 states, 39 states have (on average 6.256410256410256) internal successors, (244), 38 states have internal predecessors, (244), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 19:06:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:06:47,144 INFO L93 Difference]: Finished difference Result 702 states and 707 transitions. [2022-01-31 19:06:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 19:06:47,144 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.256410256410256) internal successors, (244), 38 states have internal predecessors, (244), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 410 [2022-01-31 19:06:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:06:47,145 INFO L225 Difference]: With dead ends: 702 [2022-01-31 19:06:47,146 INFO L226 Difference]: Without dead ends: 419 [2022-01-31 19:06:47,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1901, Invalid=3501, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 19:06:47,147 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 92 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:06:47,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 309 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:06:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-01-31 19:06:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2022-01-31 19:06:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 345 states have (on average 1.008695652173913) internal successors, (348), 346 states have internal predecessors, (348), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 19:06:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 419 transitions. [2022-01-31 19:06:47,381 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 419 transitions. Word has length 410 [2022-01-31 19:06:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:06:47,381 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 419 transitions. [2022-01-31 19:06:47,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.256410256410256) internal successors, (244), 38 states have internal predecessors, (244), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 19:06:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 419 transitions. [2022-01-31 19:06:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-01-31 19:06:47,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:06:47,383 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:06:47,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 19:06:47,383 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:06:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:06:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1522780304, now seen corresponding path program 65 times [2022-01-31 19:06:47,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:06:47,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812450224] [2022-01-31 19:06:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:06:47,385 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:06:47,385 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:06:47,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:06:47,388 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:06:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:06:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:06:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:06:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:06:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:06:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:06:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:06:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:06:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:06:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:06:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:06:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:06:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:06:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:06:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:06:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:06:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:06:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:06:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:06:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:06:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:06:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:06:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:06:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:06:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:06:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:06:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:06:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:06:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:06:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:06:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:06:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:06:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:06:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:06:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:06:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:06:49,060 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:06:49,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812450224] [2022-01-31 19:06:49,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [812450224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:06:49,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:06:49,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 19:06:49,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819868406] [2022-01-31 19:06:49,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:06:49,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 19:06:49,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:06:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 19:06:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1802, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:06:49,061 INFO L87 Difference]: Start difference. First operand 417 states and 419 transitions. Second operand has 44 states, 43 states have (on average 5.767441860465116) internal successors, (248), 42 states have internal predecessors, (248), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 19:07:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:07:06,361 INFO L93 Difference]: Finished difference Result 430 states and 433 transitions. [2022-01-31 19:07:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-31 19:07:06,361 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 5.767441860465116) internal successors, (248), 42 states have internal predecessors, (248), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 414 [2022-01-31 19:07:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:07:06,362 INFO L225 Difference]: With dead ends: 430 [2022-01-31 19:07:06,363 INFO L226 Difference]: Without dead ends: 428 [2022-01-31 19:07:06,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6416 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=5745, Invalid=27561, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 19:07:06,364 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 217 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 9354 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 9546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 9354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:07:06,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1580 Invalid, 9546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 9354 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-01-31 19:07:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-31 19:07:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 425. [2022-01-31 19:07:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 351 states have (on average 1.0085470085470085) internal successors, (354), 352 states have internal predecessors, (354), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:07:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 427 transitions. [2022-01-31 19:07:06,606 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 427 transitions. Word has length 414 [2022-01-31 19:07:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:07:06,606 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 427 transitions. [2022-01-31 19:07:06,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 5.767441860465116) internal successors, (248), 42 states have internal predecessors, (248), 35 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-31 19:07:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 427 transitions. [2022-01-31 19:07:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-01-31 19:07:06,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:07:06,608 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:07:06,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 19:07:06,608 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:07:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:07:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash 261512775, now seen corresponding path program 66 times [2022-01-31 19:07:06,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:07:06,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209175650] [2022-01-31 19:07:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:07:06,610 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:07:06,610 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:07:06,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:07:06,613 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:07:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:07:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 19:07:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:07:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:07:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:07:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:07:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:07:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:07:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:07:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:07:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:07:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:07:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:07:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:07:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:07:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:07:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:07:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:07:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:07:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:07:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:07:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:07:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:07:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:07:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:07:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:07:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:07:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:07:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:07:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:07:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:07:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:07:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:07:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:07:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:07:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:07:07,190 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:07:07,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209175650] [2022-01-31 19:07:07,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [209175650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:07:07,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:07:07,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 19:07:07,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85517368] [2022-01-31 19:07:07,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:07:07,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 19:07:07,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:07:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 19:07:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=886, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 19:07:07,192 INFO L87 Difference]: Start difference. First operand 425 states and 427 transitions. Second operand has 40 states, 40 states have (on average 6.275) internal successors, (251), 39 states have internal predecessors, (251), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 19:07:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:07:08,539 INFO L93 Difference]: Finished difference Result 722 states and 727 transitions. [2022-01-31 19:07:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 19:07:08,539 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.275) internal successors, (251), 39 states have internal predecessors, (251), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 422 [2022-01-31 19:07:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:07:08,541 INFO L225 Difference]: With dead ends: 722 [2022-01-31 19:07:08,541 INFO L226 Difference]: Without dead ends: 431 [2022-01-31 19:07:08,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2009, Invalid=3691, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 19:07:08,542 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 94 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:07:08,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 234 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:07:08,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-01-31 19:07:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 429. [2022-01-31 19:07:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 355 states have (on average 1.008450704225352) internal successors, (358), 356 states have internal predecessors, (358), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:07:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 431 transitions. [2022-01-31 19:07:08,797 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 431 transitions. Word has length 422 [2022-01-31 19:07:08,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:07:08,797 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 431 transitions. [2022-01-31 19:07:08,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.275) internal successors, (251), 39 states have internal predecessors, (251), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 19:07:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 431 transitions. [2022-01-31 19:07:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-01-31 19:07:08,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:07:08,799 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:07:08,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 19:07:08,799 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:07:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:07:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1940220222, now seen corresponding path program 67 times [2022-01-31 19:07:08,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:07:08,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982561509] [2022-01-31 19:07:08,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:07:08,801 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:07:08,801 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:07:08,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:07:08,804 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:07:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:07:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:07:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:07:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:07:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:07:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:07:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:07:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:07:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:07:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:07:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:07:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:07:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:07:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:07:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:07:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:07:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:07:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:07:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:07:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:07:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:07:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:07:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:07:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:07:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:07:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:07:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:07:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:07:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:07:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:07:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:07:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:07:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:07:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:07:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:07:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:07:10,542 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:07:10,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982561509] [2022-01-31 19:07:10,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1982561509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:07:10,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:07:10,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:07:10,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544088741] [2022-01-31 19:07:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:07:10,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:07:10,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:07:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:07:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1888, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:07:10,543 INFO L87 Difference]: Start difference. First operand 429 states and 431 transitions. Second operand has 45 states, 44 states have (on average 5.795454545454546) internal successors, (255), 43 states have internal predecessors, (255), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 19:07:27,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:07:27,968 INFO L93 Difference]: Finished difference Result 442 states and 445 transitions. [2022-01-31 19:07:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-31 19:07:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 5.795454545454546) internal successors, (255), 43 states have internal predecessors, (255), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 426 [2022-01-31 19:07:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:07:27,970 INFO L225 Difference]: With dead ends: 442 [2022-01-31 19:07:27,970 INFO L226 Difference]: Without dead ends: 440 [2022-01-31 19:07:27,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6779 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=6070, Invalid=29086, Unknown=0, NotChecked=0, Total=35156 [2022-01-31 19:07:27,971 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 229 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 9365 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 9567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 9365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:07:27,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 1619 Invalid, 9567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 9365 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-01-31 19:07:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-01-31 19:07:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2022-01-31 19:07:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 361 states have (on average 1.0083102493074791) internal successors, (364), 362 states have internal predecessors, (364), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 19:07:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 439 transitions. [2022-01-31 19:07:28,226 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 439 transitions. Word has length 426 [2022-01-31 19:07:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:07:28,226 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 439 transitions. [2022-01-31 19:07:28,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 5.795454545454546) internal successors, (255), 43 states have internal predecessors, (255), 36 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 19:07:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 439 transitions. [2022-01-31 19:07:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-01-31 19:07:28,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:07:28,228 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:07:28,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 19:07:28,228 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:07:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:07:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1373428345, now seen corresponding path program 68 times [2022-01-31 19:07:28,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:07:28,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230141481] [2022-01-31 19:07:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:07:28,230 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:07:28,231 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:07:28,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:07:28,233 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:07:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:07:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 19:07:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:07:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:07:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:07:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:07:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:07:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:07:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:07:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:07:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:07:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:07:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:07:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:07:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:07:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:07:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:07:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:07:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:07:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:07:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:07:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:07:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:07:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:07:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:07:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:07:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:07:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:07:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:07:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:07:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:07:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:07:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:07:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:07:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:07:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:07:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:07:28,908 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:07:28,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230141481] [2022-01-31 19:07:28,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [230141481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:07:28,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:07:28,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 19:07:28,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277835413] [2022-01-31 19:07:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:07:28,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 19:07:28,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:07:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 19:07:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 19:07:28,910 INFO L87 Difference]: Start difference. First operand 437 states and 439 transitions. Second operand has 41 states, 41 states have (on average 6.2926829268292686) internal successors, (258), 40 states have internal predecessors, (258), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:07:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:07:30,399 INFO L93 Difference]: Finished difference Result 742 states and 747 transitions. [2022-01-31 19:07:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 19:07:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.2926829268292686) internal successors, (258), 40 states have internal predecessors, (258), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 434 [2022-01-31 19:07:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:07:30,400 INFO L225 Difference]: With dead ends: 742 [2022-01-31 19:07:30,401 INFO L226 Difference]: Without dead ends: 443 [2022-01-31 19:07:30,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2120, Invalid=3886, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 19:07:30,401 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 96 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:07:30,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 295 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:07:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-31 19:07:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2022-01-31 19:07:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 365 states have (on average 1.0082191780821919) internal successors, (368), 366 states have internal predecessors, (368), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 19:07:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 443 transitions. [2022-01-31 19:07:30,675 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 443 transitions. Word has length 434 [2022-01-31 19:07:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:07:30,675 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 443 transitions. [2022-01-31 19:07:30,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.2926829268292686) internal successors, (258), 40 states have internal predecessors, (258), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:07:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 443 transitions. [2022-01-31 19:07:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-01-31 19:07:30,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:07:30,677 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:07:30,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 19:07:30,677 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:07:30,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:07:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash 184627828, now seen corresponding path program 69 times [2022-01-31 19:07:30,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:07:30,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698593939] [2022-01-31 19:07:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:07:30,679 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:07:30,679 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:07:30,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:07:30,682 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:07:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:07:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:07:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:07:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:07:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:07:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:07:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:07:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:07:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:07:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:07:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:07:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:07:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:07:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:07:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:07:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:07:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:07:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:07:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:07:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:07:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:07:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:07:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:07:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:07:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:07:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:07:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:07:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:07:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:07:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:07:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:07:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:07:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:07:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:07:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:07:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:07:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:07:32,675 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:07:32,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698593939] [2022-01-31 19:07:32,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [698593939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:07:32,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:07:32,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:07:32,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494939041] [2022-01-31 19:07:32,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:07:32,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:07:32,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:07:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:07:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=2150, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:07:32,676 INFO L87 Difference]: Start difference. First operand 441 states and 443 transitions. Second operand has 48 states, 47 states have (on average 5.574468085106383) internal successors, (262), 46 states have internal predecessors, (262), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:07:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:07:50,233 INFO L93 Difference]: Finished difference Result 454 states and 457 transitions. [2022-01-31 19:07:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-31 19:07:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.574468085106383) internal successors, (262), 46 states have internal predecessors, (262), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 438 [2022-01-31 19:07:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:07:50,235 INFO L225 Difference]: With dead ends: 454 [2022-01-31 19:07:50,235 INFO L226 Difference]: Without dead ends: 452 [2022-01-31 19:07:50,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7484 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=6417, Invalid=31025, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 19:07:50,237 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 240 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 9933 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 10145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 9933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:07:50,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1736 Invalid, 10145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 9933 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-01-31 19:07:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-01-31 19:07:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 449. [2022-01-31 19:07:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 371 states have (on average 1.0080862533692723) internal successors, (374), 372 states have internal predecessors, (374), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:07:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 451 transitions. [2022-01-31 19:07:50,516 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 451 transitions. Word has length 438 [2022-01-31 19:07:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:07:50,516 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 451 transitions. [2022-01-31 19:07:50,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.574468085106383) internal successors, (262), 46 states have internal predecessors, (262), 37 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-31 19:07:50,516 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 451 transitions. [2022-01-31 19:07:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-01-31 19:07:50,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:07:50,518 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:07:50,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 19:07:50,518 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:07:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:07:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1364042795, now seen corresponding path program 70 times [2022-01-31 19:07:50,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:07:50,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11889037] [2022-01-31 19:07:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:07:50,520 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:07:50,520 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:07:50,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:07:50,523 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:07:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:07:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 19:07:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:07:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:07:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:07:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:07:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:07:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:07:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:07:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:07:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:07:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:07:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:07:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:07:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:07:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:07:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:07:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:07:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:07:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:07:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:07:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:07:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:07:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:07:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:07:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:07:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:07:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:07:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:07:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:07:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:07:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:07:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:07:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:07:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:07:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:07:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:07:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:07:51,143 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:07:51,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11889037] [2022-01-31 19:07:51,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [11889037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:07:51,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:07:51,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 19:07:51,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064819338] [2022-01-31 19:07:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:07:51,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 19:07:51,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:07:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 19:07:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=973, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 19:07:51,145 INFO L87 Difference]: Start difference. First operand 449 states and 451 transitions. Second operand has 42 states, 42 states have (on average 6.309523809523809) internal successors, (265), 41 states have internal predecessors, (265), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 19:07:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:07:52,644 INFO L93 Difference]: Finished difference Result 762 states and 767 transitions. [2022-01-31 19:07:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 19:07:52,644 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.309523809523809) internal successors, (265), 41 states have internal predecessors, (265), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 446 [2022-01-31 19:07:52,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:07:52,646 INFO L225 Difference]: With dead ends: 762 [2022-01-31 19:07:52,646 INFO L226 Difference]: Without dead ends: 455 [2022-01-31 19:07:52,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2234, Invalid=4086, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 19:07:52,647 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 98 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:07:52,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 272 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:07:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-31 19:07:52,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 453. [2022-01-31 19:07:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 375 states have (on average 1.008) internal successors, (378), 376 states have internal predecessors, (378), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:07:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 455 transitions. [2022-01-31 19:07:52,926 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 455 transitions. Word has length 446 [2022-01-31 19:07:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:07:52,926 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 455 transitions. [2022-01-31 19:07:52,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.309523809523809) internal successors, (265), 41 states have internal predecessors, (265), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 19:07:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 455 transitions. [2022-01-31 19:07:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-01-31 19:07:52,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:07:52,928 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:07:52,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 19:07:52,928 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:07:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:07:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash -702620762, now seen corresponding path program 71 times [2022-01-31 19:07:52,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:07:52,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017043900] [2022-01-31 19:07:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:07:52,930 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:07:52,930 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:07:52,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:07:52,933 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:07:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:07:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:07:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:07:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:07:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:07:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:07:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:07:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:07:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:07:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:07:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:07:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:07:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:07:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:07:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:07:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:07:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:07:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:07:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:07:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:07:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:07:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:07:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:07:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:07:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:07:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:07:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:07:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:07:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:07:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:07:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:07:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:07:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:07:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:07:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:07:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:07:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:07:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:07:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:07:54,866 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:07:54,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017043900] [2022-01-31 19:07:54,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2017043900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:07:54,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:07:54,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:07:54,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777824598] [2022-01-31 19:07:54,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:07:54,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:07:54,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:07:54,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:07:54,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2157, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:07:54,867 INFO L87 Difference]: Start difference. First operand 453 states and 455 transitions. Second operand has 48 states, 47 states have (on average 5.723404255319149) internal successors, (269), 46 states have internal predecessors, (269), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 19:08:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:08:16,924 INFO L93 Difference]: Finished difference Result 468 states and 471 transitions. [2022-01-31 19:08:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-31 19:08:16,925 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.723404255319149) internal successors, (269), 46 states have internal predecessors, (269), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 450 [2022-01-31 19:08:16,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:08:16,926 INFO L225 Difference]: With dead ends: 468 [2022-01-31 19:08:16,926 INFO L226 Difference]: Without dead ends: 466 [2022-01-31 19:08:16,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7726 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=7089, Invalid=33111, Unknown=0, NotChecked=0, Total=40200 [2022-01-31 19:08:16,928 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 240 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 10930 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 11139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 10930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:08:16,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1863 Invalid, 11139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 10930 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-01-31 19:08:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-01-31 19:08:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 461. [2022-01-31 19:08:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 381 states have (on average 1.0078740157480315) internal successors, (384), 382 states have internal predecessors, (384), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:08:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 463 transitions. [2022-01-31 19:08:17,218 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 463 transitions. Word has length 450 [2022-01-31 19:08:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:08:17,219 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 463 transitions. [2022-01-31 19:08:17,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.723404255319149) internal successors, (269), 46 states have internal predecessors, (269), 38 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 19:08:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 463 transitions. [2022-01-31 19:08:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-01-31 19:08:17,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:08:17,221 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:08:17,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 19:08:17,221 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:08:17,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:08:17,222 INFO L85 PathProgramCache]: Analyzing trace with hash -770704547, now seen corresponding path program 72 times [2022-01-31 19:08:17,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:08:17,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240939552] [2022-01-31 19:08:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:08:17,223 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:08:17,223 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:08:17,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:08:17,226 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:08:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:08:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 19:08:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:08:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:08:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:08:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:08:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:08:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:08:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:08:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:08:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:08:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:08:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:08:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:08:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:08:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:08:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:08:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:08:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:08:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:08:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:08:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:08:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:08:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:08:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:08:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:08:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:08:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:08:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:08:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:08:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:08:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:08:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:08:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:08:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:08:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:08:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:08:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:08:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:08:17,911 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:08:17,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240939552] [2022-01-31 19:08:17,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [240939552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:08:17,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:08:17,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 19:08:17,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280343909] [2022-01-31 19:08:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:08:17,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 19:08:17,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:08:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 19:08:17,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=1018, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 19:08:17,913 INFO L87 Difference]: Start difference. First operand 461 states and 463 transitions. Second operand has 43 states, 43 states have (on average 6.325581395348837) internal successors, (272), 42 states have internal predecessors, (272), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:08:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:08:19,478 INFO L93 Difference]: Finished difference Result 782 states and 787 transitions. [2022-01-31 19:08:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 19:08:19,479 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.325581395348837) internal successors, (272), 42 states have internal predecessors, (272), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 458 [2022-01-31 19:08:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:08:19,481 INFO L225 Difference]: With dead ends: 782 [2022-01-31 19:08:19,481 INFO L226 Difference]: Without dead ends: 467 [2022-01-31 19:08:19,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2351, Invalid=4291, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 19:08:19,482 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 100 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:08:19,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 263 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:08:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-01-31 19:08:19,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2022-01-31 19:08:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 385 states have (on average 1.0077922077922077) internal successors, (388), 386 states have internal predecessors, (388), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:08:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 467 transitions. [2022-01-31 19:08:19,780 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 467 transitions. Word has length 458 [2022-01-31 19:08:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:08:19,780 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 467 transitions. [2022-01-31 19:08:19,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.325581395348837) internal successors, (272), 42 states have internal predecessors, (272), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:08:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 467 transitions. [2022-01-31 19:08:19,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-01-31 19:08:19,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:08:19,782 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:08:19,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 19:08:19,782 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:08:19,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:08:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1689965144, now seen corresponding path program 73 times [2022-01-31 19:08:19,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:08:19,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754334887] [2022-01-31 19:08:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:08:19,784 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:08:19,784 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:08:19,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:08:19,787 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:08:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:08:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:08:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:08:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:08:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:08:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:08:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:08:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:08:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:08:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:08:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:08:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:08:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:08:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:08:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:08:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:08:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:08:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:08:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:08:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:08:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:08:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:08:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:08:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:08:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:08:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:08:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:08:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:08:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:08:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:08:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:08:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:08:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:08:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:08:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:08:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:08:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:08:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:08:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:08:21,775 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:08:21,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754334887] [2022-01-31 19:08:21,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [754334887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:08:21,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:08:21,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:08:21,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225276198] [2022-01-31 19:08:21,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:08:21,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:08:21,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:08:21,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:08:21,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=2158, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:08:21,776 INFO L87 Difference]: Start difference. First operand 465 states and 467 transitions. Second operand has 48 states, 47 states have (on average 5.872340425531915) internal successors, (276), 46 states have internal predecessors, (276), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:08:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:08:44,000 INFO L93 Difference]: Finished difference Result 478 states and 481 transitions. [2022-01-31 19:08:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-31 19:08:44,001 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.872340425531915) internal successors, (276), 46 states have internal predecessors, (276), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 462 [2022-01-31 19:08:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:08:44,002 INFO L225 Difference]: With dead ends: 478 [2022-01-31 19:08:44,002 INFO L226 Difference]: Without dead ends: 476 [2022-01-31 19:08:44,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7928 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=7099, Invalid=33907, Unknown=0, NotChecked=0, Total=41006 [2022-01-31 19:08:44,004 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 318 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 11110 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 11399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 11110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-31 19:08:44,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 1904 Invalid, 11399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 11110 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-01-31 19:08:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-01-31 19:08:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 473. [2022-01-31 19:08:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 391 states have (on average 1.0076726342710998) internal successors, (394), 392 states have internal predecessors, (394), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 19:08:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 475 transitions. [2022-01-31 19:08:44,310 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 475 transitions. Word has length 462 [2022-01-31 19:08:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:08:44,310 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 475 transitions. [2022-01-31 19:08:44,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.872340425531915) internal successors, (276), 46 states have internal predecessors, (276), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-31 19:08:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 475 transitions. [2022-01-31 19:08:44,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-01-31 19:08:44,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:08:44,312 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:08:44,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 19:08:44,312 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:08:44,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:08:44,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1877680143, now seen corresponding path program 74 times [2022-01-31 19:08:44,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:08:44,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206138887] [2022-01-31 19:08:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:08:44,314 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:08:44,314 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:08:44,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:08:44,317 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:08:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:08:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 19:08:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:08:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:08:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:08:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:08:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:08:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:08:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:08:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:08:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:08:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:08:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:08:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:08:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:08:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:08:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:08:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:08:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:08:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:08:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:08:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:08:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:08:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:08:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:08:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:08:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:08:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:08:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:08:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:08:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:08:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:08:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:08:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:08:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:08:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:08:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:08:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:08:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:08:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:08:44,997 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:08:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206138887] [2022-01-31 19:08:44,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1206138887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:08:44,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:08:44,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 19:08:44,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054752212] [2022-01-31 19:08:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:08:44,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 19:08:44,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:08:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 19:08:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1064, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 19:08:44,998 INFO L87 Difference]: Start difference. First operand 473 states and 475 transitions. Second operand has 44 states, 44 states have (on average 6.340909090909091) internal successors, (279), 43 states have internal predecessors, (279), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:08:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:08:46,677 INFO L93 Difference]: Finished difference Result 802 states and 807 transitions. [2022-01-31 19:08:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 19:08:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.340909090909091) internal successors, (279), 43 states have internal predecessors, (279), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 470 [2022-01-31 19:08:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:08:46,679 INFO L225 Difference]: With dead ends: 802 [2022-01-31 19:08:46,679 INFO L226 Difference]: Without dead ends: 479 [2022-01-31 19:08:46,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2471, Invalid=4501, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 19:08:46,681 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 102 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:08:46,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 302 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:08:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-31 19:08:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2022-01-31 19:08:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 395 states have (on average 1.0075949367088608) internal successors, (398), 396 states have internal predecessors, (398), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 19:08:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 479 transitions. [2022-01-31 19:08:46,994 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 479 transitions. Word has length 470 [2022-01-31 19:08:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:08:46,994 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 479 transitions. [2022-01-31 19:08:46,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.340909090909091) internal successors, (279), 43 states have internal predecessors, (279), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:08:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 479 transitions. [2022-01-31 19:08:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-01-31 19:08:46,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:08:46,997 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:08:46,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 19:08:46,997 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:08:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:08:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1250142582, now seen corresponding path program 75 times [2022-01-31 19:08:46,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:08:46,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617903072] [2022-01-31 19:08:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:08:46,999 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:08:46,999 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:08:46,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:08:47,002 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:08:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:08:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:08:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:08:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:08:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:08:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:08:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:08:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:08:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:08:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:08:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:08:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:08:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:08:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:08:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:08:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:08:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:08:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:08:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:08:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:08:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:08:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:08:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:08:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:08:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:08:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:08:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:08:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:08:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:08:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:08:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:08:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:08:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:08:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:08:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:08:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:08:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:08:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:08:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:08:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:08:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:08:49,072 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:08:49,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617903072] [2022-01-31 19:08:49,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1617903072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:08:49,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:08:49,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 19:08:49,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194465551] [2022-01-31 19:08:49,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:08:49,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 19:08:49,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:08:49,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 19:08:49,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2252, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:08:49,073 INFO L87 Difference]: Start difference. First operand 477 states and 479 transitions. Second operand has 49 states, 48 states have (on average 5.895833333333333) internal successors, (283), 47 states have internal predecessors, (283), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:09:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:09:12,121 INFO L93 Difference]: Finished difference Result 490 states and 493 transitions. [2022-01-31 19:09:12,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-01-31 19:09:12,121 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 5.895833333333333) internal successors, (283), 47 states have internal predecessors, (283), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 474 [2022-01-31 19:09:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:09:12,123 INFO L225 Difference]: With dead ends: 490 [2022-01-31 19:09:12,123 INFO L226 Difference]: Without dead ends: 488 [2022-01-31 19:09:12,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8331 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=7460, Invalid=35596, Unknown=0, NotChecked=0, Total=43056 [2022-01-31 19:09:12,125 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 332 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 11234 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 11535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 11234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-01-31 19:09:12,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 1951 Invalid, 11535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 11234 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-01-31 19:09:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-31 19:09:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 485. [2022-01-31 19:09:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 401 states have (on average 1.0074812967581048) internal successors, (404), 402 states have internal predecessors, (404), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 19:09:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 487 transitions. [2022-01-31 19:09:12,461 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 487 transitions. Word has length 474 [2022-01-31 19:09:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:09:12,461 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 487 transitions. [2022-01-31 19:09:12,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 5.895833333333333) internal successors, (283), 47 states have internal predecessors, (283), 40 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 19:09:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 487 transitions. [2022-01-31 19:09:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-01-31 19:09:12,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:09:12,463 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:09:12,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 19:09:12,463 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:09:12,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:09:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1371123135, now seen corresponding path program 76 times [2022-01-31 19:09:12,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:09:12,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500496765] [2022-01-31 19:09:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:09:12,465 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:09:12,466 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:09:12,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:09:12,469 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:09:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:09:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 19:09:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:09:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:09:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:09:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:09:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:09:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:09:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:09:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:09:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:09:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:09:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:09:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:09:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:09:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:09:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:09:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:09:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:09:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:09:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:09:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:09:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:09:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:09:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:09:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:09:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:09:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:09:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:09:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:09:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:09:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:09:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:09:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:09:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:09:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:09:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:09:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:09:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:09:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:09:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:09:13,185 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:09:13,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500496765] [2022-01-31 19:09:13,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [500496765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:09:13,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:09:13,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 19:09:13,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050333471] [2022-01-31 19:09:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:09:13,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 19:09:13,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:09:13,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 19:09:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=1111, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 19:09:13,187 INFO L87 Difference]: Start difference. First operand 485 states and 487 transitions. Second operand has 45 states, 45 states have (on average 6.355555555555555) internal successors, (286), 44 states have internal predecessors, (286), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 19:09:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:09:14,890 INFO L93 Difference]: Finished difference Result 822 states and 827 transitions. [2022-01-31 19:09:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 19:09:14,891 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.355555555555555) internal successors, (286), 44 states have internal predecessors, (286), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 482 [2022-01-31 19:09:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:09:14,892 INFO L225 Difference]: With dead ends: 822 [2022-01-31 19:09:14,892 INFO L226 Difference]: Without dead ends: 491 [2022-01-31 19:09:14,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2594, Invalid=4716, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 19:09:14,894 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 104 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:09:14,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 282 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:09:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-01-31 19:09:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2022-01-31 19:09:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 405 states have (on average 1.0074074074074073) internal successors, (408), 406 states have internal predecessors, (408), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 19:09:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 491 transitions. [2022-01-31 19:09:15,235 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 491 transitions. Word has length 482 [2022-01-31 19:09:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:09:15,235 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 491 transitions. [2022-01-31 19:09:15,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.355555555555555) internal successors, (286), 44 states have internal predecessors, (286), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 19:09:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 491 transitions. [2022-01-31 19:09:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-01-31 19:09:15,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:09:15,238 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:09:15,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 19:09:15,238 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:09:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:09:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1588242492, now seen corresponding path program 77 times [2022-01-31 19:09:15,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:09:15,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042363531] [2022-01-31 19:09:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:09:15,240 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:09:15,240 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:09:15,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:09:15,244 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:09:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:09:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:09:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:09:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:09:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:09:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:09:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:09:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:09:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:09:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:09:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:09:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:09:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:09:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:09:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:09:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:09:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:09:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:09:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:09:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:09:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:09:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:09:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:09:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:09:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:09:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:09:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:09:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:09:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:09:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:09:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:09:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:09:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:09:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:09:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:09:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:09:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:09:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:09:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:09:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:09:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:09:17,575 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:09:17,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042363531] [2022-01-31 19:09:17,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2042363531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:09:17,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:09:17,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 19:09:17,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284588948] [2022-01-31 19:09:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:09:17,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 19:09:17,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:09:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 19:09:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2445, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 19:09:17,577 INFO L87 Difference]: Start difference. First operand 489 states and 491 transitions. Second operand has 51 states, 50 states have (on average 5.8) internal successors, (290), 49 states have internal predecessors, (290), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 19:09:42,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:09:42,132 INFO L93 Difference]: Finished difference Result 502 states and 505 transitions. [2022-01-31 19:09:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-31 19:09:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.8) internal successors, (290), 49 states have internal predecessors, (290), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 486 [2022-01-31 19:09:42,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:09:42,134 INFO L225 Difference]: With dead ends: 502 [2022-01-31 19:09:42,134 INFO L226 Difference]: Without dead ends: 500 [2022-01-31 19:09:42,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8753 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=7871, Invalid=37711, Unknown=0, NotChecked=0, Total=45582 [2022-01-31 19:09:42,136 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 259 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 12188 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 12416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 12188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:09:42,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2088 Invalid, 12416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 12188 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-01-31 19:09:42,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-01-31 19:09:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 497. [2022-01-31 19:09:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 411 states have (on average 1.0072992700729928) internal successors, (414), 412 states have internal predecessors, (414), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:09:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 499 transitions. [2022-01-31 19:09:42,480 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 499 transitions. Word has length 486 [2022-01-31 19:09:42,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:09:42,480 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 499 transitions. [2022-01-31 19:09:42,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.8) internal successors, (290), 49 states have internal predecessors, (290), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-01-31 19:09:42,480 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 499 transitions. [2022-01-31 19:09:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-01-31 19:09:42,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:09:42,483 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:09:42,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 19:09:42,483 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:09:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:09:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash 136892915, now seen corresponding path program 78 times [2022-01-31 19:09:42,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:09:42,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372415277] [2022-01-31 19:09:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:09:42,485 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:09:42,485 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:09:42,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:09:42,488 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:09:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:09:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 19:09:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:09:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:09:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:09:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:09:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:09:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:09:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:09:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:09:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:09:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:09:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:09:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:09:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:09:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:09:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:09:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:09:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:09:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:09:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:09:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:09:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:09:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:09:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:09:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:09:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:09:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:09:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:09:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:09:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:09:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:09:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:09:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:09:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:09:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:09:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:09:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:09:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:09:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:09:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:09:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:09:43,293 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:09:43,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372415277] [2022-01-31 19:09:43,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1372415277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:09:43,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:09:43,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 19:09:43,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468296330] [2022-01-31 19:09:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:09:43,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 19:09:43,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:09:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 19:09:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=1159, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 19:09:43,294 INFO L87 Difference]: Start difference. First operand 497 states and 499 transitions. Second operand has 46 states, 46 states have (on average 6.369565217391305) internal successors, (293), 45 states have internal predecessors, (293), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 19:09:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:09:44,985 INFO L93 Difference]: Finished difference Result 842 states and 847 transitions. [2022-01-31 19:09:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 19:09:44,985 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.369565217391305) internal successors, (293), 45 states have internal predecessors, (293), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 494 [2022-01-31 19:09:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:09:44,987 INFO L225 Difference]: With dead ends: 842 [2022-01-31 19:09:44,987 INFO L226 Difference]: Without dead ends: 503 [2022-01-31 19:09:44,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2720, Invalid=4936, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 19:09:44,988 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 106 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:09:44,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 260 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:09:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-01-31 19:09:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2022-01-31 19:09:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 415 states have (on average 1.0072289156626506) internal successors, (418), 416 states have internal predecessors, (418), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:09:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 503 transitions. [2022-01-31 19:09:45,333 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 503 transitions. Word has length 494 [2022-01-31 19:09:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:09:45,333 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 503 transitions. [2022-01-31 19:09:45,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.369565217391305) internal successors, (293), 45 states have internal predecessors, (293), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 19:09:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 503 transitions. [2022-01-31 19:09:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-01-31 19:09:45,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:09:45,335 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:09:45,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 19:09:45,336 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:09:45,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:09:45,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1641216146, now seen corresponding path program 79 times [2022-01-31 19:09:45,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:09:45,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774195730] [2022-01-31 19:09:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:09:45,337 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:09:45,338 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:09:45,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:09:45,341 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:09:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:09:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:09:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:09:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:09:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:09:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:09:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:09:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:09:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:09:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:09:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:09:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:09:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:09:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:09:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:09:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:09:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:09:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:09:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:09:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:09:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:09:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:09:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:09:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:09:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:09:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:09:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:09:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:09:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:09:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:09:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:09:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:09:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:09:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:09:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:09:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:09:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:09:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:09:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:09:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:09:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:09:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:09:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:09:47,788 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:09:47,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774195730] [2022-01-31 19:09:47,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [774195730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:09:47,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:09:47,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:09:47,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193863474] [2022-01-31 19:09:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:09:47,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:09:47,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:09:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:09:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2539, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:09:47,789 INFO L87 Difference]: Start difference. First operand 501 states and 503 transitions. Second operand has 52 states, 51 states have (on average 5.823529411764706) internal successors, (297), 50 states have internal predecessors, (297), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 19:10:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:13,450 INFO L93 Difference]: Finished difference Result 514 states and 517 transitions. [2022-01-31 19:10:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-01-31 19:10:13,451 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 5.823529411764706) internal successors, (297), 50 states have internal predecessors, (297), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 498 [2022-01-31 19:10:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:13,452 INFO L225 Difference]: With dead ends: 514 [2022-01-31 19:10:13,452 INFO L226 Difference]: Without dead ends: 512 [2022-01-31 19:10:13,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9531 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=8180, Invalid=39126, Unknown=0, NotChecked=0, Total=47306 [2022-01-31 19:10:13,454 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 257 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 12854 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 13080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 12854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:13,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2143 Invalid, 13080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 12854 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-01-31 19:10:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-01-31 19:10:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 509. [2022-01-31 19:10:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 421 states have (on average 1.007125890736342) internal successors, (424), 422 states have internal predecessors, (424), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 19:10:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 511 transitions. [2022-01-31 19:10:13,808 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 511 transitions. Word has length 498 [2022-01-31 19:10:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:13,808 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 511 transitions. [2022-01-31 19:10:13,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 5.823529411764706) internal successors, (297), 50 states have internal predecessors, (297), 42 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 19:10:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 511 transitions. [2022-01-31 19:10:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-01-31 19:10:13,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:13,810 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:13,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 19:10:13,811 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash 3792677, now seen corresponding path program 80 times [2022-01-31 19:10:13,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:13,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14368947] [2022-01-31 19:10:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:13,813 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:13,813 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:13,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:13,816 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 19:10:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:10:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:10:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:10:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:10:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:10:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:10:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:10:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:10:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:10:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:10:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:10:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:10:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:10:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:10:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:10:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:10:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:10:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:10:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:10:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:10:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:10:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:10:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:10:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:10:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:10:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:10:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:10:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:10:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:10:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:10:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:10:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:10:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:10:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:10:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:10:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:10:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:10:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:10:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:10:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:10:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:10:14,616 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:14,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14368947] [2022-01-31 19:10:14,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [14368947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:14,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:14,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 19:10:14,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882734416] [2022-01-31 19:10:14,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:14,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 19:10:14,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:14,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 19:10:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=1208, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 19:10:14,617 INFO L87 Difference]: Start difference. First operand 509 states and 511 transitions. Second operand has 47 states, 47 states have (on average 6.382978723404255) internal successors, (300), 46 states have internal predecessors, (300), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:10:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:16,411 INFO L93 Difference]: Finished difference Result 862 states and 867 transitions. [2022-01-31 19:10:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 19:10:16,411 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.382978723404255) internal successors, (300), 46 states have internal predecessors, (300), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 506 [2022-01-31 19:10:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:16,413 INFO L225 Difference]: With dead ends: 862 [2022-01-31 19:10:16,413 INFO L226 Difference]: Without dead ends: 515 [2022-01-31 19:10:16,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2849, Invalid=5161, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 19:10:16,414 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 108 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:16,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 287 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:10:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-01-31 19:10:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 513. [2022-01-31 19:10:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 425 states have (on average 1.0070588235294118) internal successors, (428), 426 states have internal predecessors, (428), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 19:10:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 515 transitions. [2022-01-31 19:10:16,777 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 515 transitions. Word has length 506 [2022-01-31 19:10:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:16,777 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 515 transitions. [2022-01-31 19:10:16,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.382978723404255) internal successors, (300), 46 states have internal predecessors, (300), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:10:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 515 transitions. [2022-01-31 19:10:16,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-01-31 19:10:16,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:16,780 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:16,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 19:10:16,780 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:16,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1770697760, now seen corresponding path program 81 times [2022-01-31 19:10:16,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:16,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885028610] [2022-01-31 19:10:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:16,782 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:16,782 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:16,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:16,786 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:10:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:10:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:10:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:10:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:10:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:10:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:10:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:10:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:10:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:10:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:10:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:10:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:10:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:10:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:10:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:10:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:10:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:10:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:10:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:10:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:10:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:10:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:10:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:10:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:10:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:10:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:10:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:10:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:10:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:10:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:10:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:10:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:10:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:10:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:10:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:10:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:10:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:10:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:10:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:10:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:10:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:10:19,172 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:19,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885028610] [2022-01-31 19:10:19,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1885028610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:19,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:19,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:10:19,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143011396] [2022-01-31 19:10:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:19,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:10:19,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:19,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:10:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=2546, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:10:19,173 INFO L87 Difference]: Start difference. First operand 513 states and 515 transitions. Second operand has 52 states, 51 states have (on average 5.96078431372549) internal successors, (304), 50 states have internal predecessors, (304), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:10:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:47,603 INFO L93 Difference]: Finished difference Result 528 states and 531 transitions. [2022-01-31 19:10:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-01-31 19:10:47,604 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 5.96078431372549) internal successors, (304), 50 states have internal predecessors, (304), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 510 [2022-01-31 19:10:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:47,605 INFO L225 Difference]: With dead ends: 528 [2022-01-31 19:10:47,605 INFO L226 Difference]: Without dead ends: 526 [2022-01-31 19:10:47,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9808 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=8940, Invalid=41460, Unknown=0, NotChecked=0, Total=50400 [2022-01-31 19:10:47,608 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 277 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 13118 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 13353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 13118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:47,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2267 Invalid, 13353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 13118 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-01-31 19:10:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-01-31 19:10:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 521. [2022-01-31 19:10:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 431 states have (on average 1.0069605568445477) internal successors, (434), 432 states have internal predecessors, (434), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:10:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 523 transitions. [2022-01-31 19:10:47,988 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 523 transitions. Word has length 510 [2022-01-31 19:10:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:47,988 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 523 transitions. [2022-01-31 19:10:47,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 5.96078431372549) internal successors, (304), 50 states have internal predecessors, (304), 43 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 19:10:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 523 transitions. [2022-01-31 19:10:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-01-31 19:10:47,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:47,990 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:47,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 19:10:47,991 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash 817936855, now seen corresponding path program 82 times [2022-01-31 19:10:47,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:47,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100387940] [2022-01-31 19:10:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:47,993 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:47,993 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:47,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:47,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 19:10:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:10:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:10:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:10:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:10:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:10:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:10:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:10:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:10:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:10:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:10:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:10:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:10:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:10:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:10:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:10:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:10:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:10:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:10:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:10:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:10:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:10:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:10:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:10:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:10:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:10:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:10:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:10:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:10:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:10:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:10:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:10:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:10:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:10:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:10:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:10:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:10:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:10:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:10:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:10:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:10:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 19:10:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:10:48,813 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:48,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100387940] [2022-01-31 19:10:48,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1100387940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:48,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:48,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 19:10:48,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503262387] [2022-01-31 19:10:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:48,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 19:10:48,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:48,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 19:10:48,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=998, Invalid=1258, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 19:10:48,814 INFO L87 Difference]: Start difference. First operand 521 states and 523 transitions. Second operand has 48 states, 48 states have (on average 6.395833333333333) internal successors, (307), 47 states have internal predecessors, (307), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 19:10:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:50,758 INFO L93 Difference]: Finished difference Result 882 states and 887 transitions. [2022-01-31 19:10:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 19:10:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.395833333333333) internal successors, (307), 47 states have internal predecessors, (307), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 518 [2022-01-31 19:10:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:50,760 INFO L225 Difference]: With dead ends: 882 [2022-01-31 19:10:50,760 INFO L226 Difference]: Without dead ends: 527 [2022-01-31 19:10:50,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2981, Invalid=5391, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 19:10:50,761 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 110 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:50,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 311 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:10:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-01-31 19:10:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 525. [2022-01-31 19:10:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 435 states have (on average 1.006896551724138) internal successors, (438), 436 states have internal predecessors, (438), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:10:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 527 transitions. [2022-01-31 19:10:51,143 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 527 transitions. Word has length 518 [2022-01-31 19:10:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:51,143 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 527 transitions. [2022-01-31 19:10:51,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.395833333333333) internal successors, (307), 47 states have internal predecessors, (307), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 19:10:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 527 transitions. [2022-01-31 19:10:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-01-31 19:10:51,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:51,146 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:51,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 19:10:51,146 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2112548434, now seen corresponding path program 83 times [2022-01-31 19:10:51,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:51,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017954191] [2022-01-31 19:10:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:51,148 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:51,148 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:51,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:51,152 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:10:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:10:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:10:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:10:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:10:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:10:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:10:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:10:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:10:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:10:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:10:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:10:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:10:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:10:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:10:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:10:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:10:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:10:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:10:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:10:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:10:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:10:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:10:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:10:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:10:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:10:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:10:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:10:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:10:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:10:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:10:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:10:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:10:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:10:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:10:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:10:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:10:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:10:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:10:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:10:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 19:10:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 19:10:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:10:53,655 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:53,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017954191] [2022-01-31 19:10:53,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2017954191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:53,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:53,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 19:10:53,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992110674] [2022-01-31 19:10:53,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:53,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 19:10:53,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:53,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 19:10:53,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2648, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:10:53,657 INFO L87 Difference]: Start difference. First operand 525 states and 527 transitions. Second operand has 53 states, 52 states have (on average 5.980769230769231) internal successors, (311), 51 states have internal predecessors, (311), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 19:11:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:11:23,340 INFO L93 Difference]: Finished difference Result 538 states and 541 transitions. [2022-01-31 19:11:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-01-31 19:11:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 5.980769230769231) internal successors, (311), 51 states have internal predecessors, (311), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 522 [2022-01-31 19:11:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:11:23,342 INFO L225 Difference]: With dead ends: 538 [2022-01-31 19:11:23,342 INFO L226 Difference]: Without dead ends: 536 [2022-01-31 19:11:23,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10043 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=8994, Invalid=42762, Unknown=0, NotChecked=0, Total=51756 [2022-01-31 19:11:23,345 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 363 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 13762 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 14089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 13762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-01-31 19:11:23,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2364 Invalid, 14089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 13762 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-01-31 19:11:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-01-31 19:11:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 533. [2022-01-31 19:11:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 441 states have (on average 1.0068027210884354) internal successors, (444), 442 states have internal predecessors, (444), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:11:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 535 transitions. [2022-01-31 19:11:23,733 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 535 transitions. Word has length 522 [2022-01-31 19:11:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:11:23,734 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 535 transitions. [2022-01-31 19:11:23,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 5.980769230769231) internal successors, (311), 51 states have internal predecessors, (311), 44 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 19:11:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 535 transitions. [2022-01-31 19:11:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-01-31 19:11:23,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:11:23,736 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:11:23,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 19:11:23,736 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:11:23,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:11:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1537516041, now seen corresponding path program 84 times [2022-01-31 19:11:23,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:11:23,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109110581] [2022-01-31 19:11:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:11:23,738 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:11:23,739 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:11:23,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:11:23,743 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:11:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:11:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 19:11:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:11:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:11:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:11:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:11:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:11:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:11:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:11:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:11:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:11:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:11:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:11:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:11:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:11:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:11:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:11:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:11:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:11:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:11:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:11:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:11:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:11:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:11:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:11:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:11:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:11:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:11:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:11:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:11:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:11:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:11:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:11:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:11:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:11:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:11:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:11:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:11:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:11:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:11:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:11:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 19:11:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 19:11:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 19:11:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:11:24,594 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:11:24,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109110581] [2022-01-31 19:11:24,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1109110581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:11:24,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:11:24,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 19:11:24,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623183133] [2022-01-31 19:11:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:11:24,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 19:11:24,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:11:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 19:11:24,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1043, Invalid=1309, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 19:11:24,596 INFO L87 Difference]: Start difference. First operand 533 states and 535 transitions. Second operand has 49 states, 49 states have (on average 6.408163265306122) internal successors, (314), 48 states have internal predecessors, (314), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:11:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:11:26,541 INFO L93 Difference]: Finished difference Result 902 states and 907 transitions. [2022-01-31 19:11:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 19:11:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.408163265306122) internal successors, (314), 48 states have internal predecessors, (314), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 530 [2022-01-31 19:11:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:11:26,543 INFO L225 Difference]: With dead ends: 902 [2022-01-31 19:11:26,543 INFO L226 Difference]: Without dead ends: 539 [2022-01-31 19:11:26,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3116, Invalid=5626, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 19:11:26,544 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 112 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:11:26,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 291 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:11:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-31 19:11:26,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2022-01-31 19:11:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 445 states have (on average 1.006741573033708) internal successors, (448), 446 states have internal predecessors, (448), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:11:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 539 transitions. [2022-01-31 19:11:26,942 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 539 transitions. Word has length 530 [2022-01-31 19:11:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:11:26,943 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 539 transitions. [2022-01-31 19:11:26,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.408163265306122) internal successors, (314), 48 states have internal predecessors, (314), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:11:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 539 transitions. [2022-01-31 19:11:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-01-31 19:11:26,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:11:26,945 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:11:26,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 19:11:26,945 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:11:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:11:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1880421892, now seen corresponding path program 85 times [2022-01-31 19:11:26,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:11:26,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041737213] [2022-01-31 19:11:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:11:26,947 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:11:26,947 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:11:26,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:11:26,951 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:11:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:11:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:11:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:11:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:11:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:11:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:11:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:11:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:11:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:11:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:11:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:11:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:11:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:11:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:11:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:11:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:11:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:11:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:11:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:11:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:11:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:11:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:11:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:11:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:11:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:11:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:11:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:11:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:11:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:11:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:11:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:11:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:11:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:11:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:11:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:11:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:11:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:11:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:11:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:11:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:11:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:11:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 19:11:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 19:11:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 19:11:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:11:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:11:29,553 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:11:29,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041737213] [2022-01-31 19:11:29,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2041737213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:11:29,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:11:29,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:11:29,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690170453] [2022-01-31 19:11:29,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:11:29,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:11:29,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:11:29,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:11:29,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2752, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:11:29,554 INFO L87 Difference]: Start difference. First operand 537 states and 539 transitions. Second operand has 54 states, 53 states have (on average 6.0) internal successors, (318), 52 states have internal predecessors, (318), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:12:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:12:01,066 INFO L93 Difference]: Finished difference Result 552 states and 555 transitions. [2022-01-31 19:12:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-01-31 19:12:01,067 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 6.0) internal successors, (318), 52 states have internal predecessors, (318), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 534 [2022-01-31 19:12:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:12:01,068 INFO L225 Difference]: With dead ends: 552 [2022-01-31 19:12:01,068 INFO L226 Difference]: Without dead ends: 550 [2022-01-31 19:12:01,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10714 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=9759, Invalid=45231, Unknown=0, NotChecked=0, Total=54990 [2022-01-31 19:12:01,071 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 290 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 14258 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 14505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 14258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:12:01,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2461 Invalid, 14505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 14258 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-01-31 19:12:01,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-01-31 19:12:01,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 545. [2022-01-31 19:12:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 451 states have (on average 1.0066518847006651) internal successors, (454), 452 states have internal predecessors, (454), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 19:12:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 547 transitions. [2022-01-31 19:12:01,478 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 547 transitions. Word has length 534 [2022-01-31 19:12:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:12:01,478 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 547 transitions. [2022-01-31 19:12:01,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 6.0) internal successors, (318), 52 states have internal predecessors, (318), 45 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-31 19:12:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 547 transitions. [2022-01-31 19:12:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-01-31 19:12:01,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:12:01,481 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:12:01,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 19:12:01,481 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:12:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:12:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2053953467, now seen corresponding path program 86 times [2022-01-31 19:12:01,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:12:01,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817978120] [2022-01-31 19:12:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:12:01,483 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:12:01,483 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:12:01,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:12:01,487 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:12:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:12:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 19:12:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:12:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:12:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:12:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:12:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:12:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:12:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:12:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:12:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:12:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:12:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:12:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:12:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:12:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:12:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:12:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:12:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:12:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:12:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:12:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:12:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:12:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:12:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:12:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:12:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:12:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:12:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:12:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:12:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:12:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:12:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:12:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:12:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:12:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:12:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:12:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:12:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:12:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:12:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:12:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 19:12:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 19:12:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 19:12:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 19:12:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:12:02,372 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:12:02,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817978120] [2022-01-31 19:12:02,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1817978120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:12:02,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:12:02,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 19:12:02,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754995431] [2022-01-31 19:12:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:12:02,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 19:12:02,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:12:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 19:12:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=1361, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 19:12:02,374 INFO L87 Difference]: Start difference. First operand 545 states and 547 transitions. Second operand has 50 states, 50 states have (on average 6.42) internal successors, (321), 49 states have internal predecessors, (321), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:12:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:12:04,338 INFO L93 Difference]: Finished difference Result 922 states and 927 transitions. [2022-01-31 19:12:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 19:12:04,338 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.42) internal successors, (321), 49 states have internal predecessors, (321), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 542 [2022-01-31 19:12:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:12:04,340 INFO L225 Difference]: With dead ends: 922 [2022-01-31 19:12:04,340 INFO L226 Difference]: Without dead ends: 551 [2022-01-31 19:12:04,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3254, Invalid=5866, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 19:12:04,341 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 114 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 19:12:04,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 277 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 19:12:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-01-31 19:12:04,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2022-01-31 19:12:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 455 states have (on average 1.0065934065934066) internal successors, (458), 456 states have internal predecessors, (458), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 19:12:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 551 transitions. [2022-01-31 19:12:04,755 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 551 transitions. Word has length 542 [2022-01-31 19:12:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:12:04,755 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 551 transitions. [2022-01-31 19:12:04,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.42) internal successors, (321), 49 states have internal predecessors, (321), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:12:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 551 transitions. [2022-01-31 19:12:04,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-01-31 19:12:04,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:12:04,758 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:12:04,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 19:12:04,758 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:12:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:12:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1133507786, now seen corresponding path program 87 times [2022-01-31 19:12:04,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:12:04,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745172089] [2022-01-31 19:12:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:12:04,760 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:12:04,760 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:12:04,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:12:04,764 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:12:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:12:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:12:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:12:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:12:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:12:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:12:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:12:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:12:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:12:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:12:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:12:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:12:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:12:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:12:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:12:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:12:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:12:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:12:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:12:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:12:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:12:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:12:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:12:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:12:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:12:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:12:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:12:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:12:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:12:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:12:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:12:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:12:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:12:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:12:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:12:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:12:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:12:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:12:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:12:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:12:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 19:12:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 19:12:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 19:12:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 19:12:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 19:12:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:12:07,499 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:12:07,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745172089] [2022-01-31 19:12:07,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745172089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:12:07,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:12:07,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 19:12:07,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246057657] [2022-01-31 19:12:07,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:12:07,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 19:12:07,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:12:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 19:12:07,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=2858, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 19:12:07,501 INFO L87 Difference]: Start difference. First operand 549 states and 551 transitions. Second operand has 55 states, 54 states have (on average 6.018518518518518) internal successors, (325), 53 states have internal predecessors, (325), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:12:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:12:41,213 INFO L93 Difference]: Finished difference Result 562 states and 565 transitions. [2022-01-31 19:12:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-01-31 19:12:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 6.018518518518518) internal successors, (325), 53 states have internal predecessors, (325), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 546 [2022-01-31 19:12:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:12:41,215 INFO L225 Difference]: With dead ends: 562 [2022-01-31 19:12:41,215 INFO L226 Difference]: Without dead ends: 560 [2022-01-31 19:12:41,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10959 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=9815, Invalid=46591, Unknown=0, NotChecked=0, Total=56406 [2022-01-31 19:12:41,217 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 289 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 15081 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 15331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 15081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-01-31 19:12:41,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2566 Invalid, 15331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 15081 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-01-31 19:12:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-31 19:12:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 557. [2022-01-31 19:12:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 461 states have (on average 1.0065075921908895) internal successors, (464), 462 states have internal predecessors, (464), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 19:12:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 559 transitions. [2022-01-31 19:12:41,647 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 559 transitions. Word has length 546 [2022-01-31 19:12:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:12:41,647 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 559 transitions. [2022-01-31 19:12:41,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 6.018518518518518) internal successors, (325), 53 states have internal predecessors, (325), 46 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 19:12:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 559 transitions. [2022-01-31 19:12:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-01-31 19:12:41,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:12:41,650 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:12:41,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 19:12:41,650 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:12:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:12:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash -834626835, now seen corresponding path program 88 times [2022-01-31 19:12:41,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:12:41,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498802024] [2022-01-31 19:12:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:12:41,652 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:12:41,652 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:12:41,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:12:41,656 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:12:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:12:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 19:12:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:12:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:12:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:12:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:12:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:12:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:12:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:12:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:12:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:12:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:12:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:12:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:12:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:12:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:12:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:12:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:12:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:12:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:12:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:12:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:12:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:12:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:12:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:12:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:12:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:12:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:12:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:12:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:12:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:12:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:12:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:12:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:12:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:12:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:12:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:12:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:12:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:12:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:12:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 19:12:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 19:12:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 19:12:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 19:12:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 19:12:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 19:12:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:12:42,583 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:12:42,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498802024] [2022-01-31 19:12:42,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [498802024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:12:42,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:12:42,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 19:12:42,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286807730] [2022-01-31 19:12:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:12:42,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 19:12:42,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:12:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 19:12:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 19:12:42,584 INFO L87 Difference]: Start difference. First operand 557 states and 559 transitions. Second operand has 51 states, 51 states have (on average 6.431372549019608) internal successors, (328), 50 states have internal predecessors, (328), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 19:12:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:12:44,704 INFO L93 Difference]: Finished difference Result 942 states and 947 transitions. [2022-01-31 19:12:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 19:12:44,704 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.431372549019608) internal successors, (328), 50 states have internal predecessors, (328), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 554 [2022-01-31 19:12:44,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:12:44,706 INFO L225 Difference]: With dead ends: 942 [2022-01-31 19:12:44,706 INFO L226 Difference]: Without dead ends: 563 [2022-01-31 19:12:44,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3395, Invalid=6111, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 19:12:44,707 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 116 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:12:44,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 310 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:12:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-01-31 19:12:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 561. [2022-01-31 19:12:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 465 states have (on average 1.0064516129032257) internal successors, (468), 466 states have internal predecessors, (468), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 19:12:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 563 transitions. [2022-01-31 19:12:45,140 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 563 transitions. Word has length 554 [2022-01-31 19:12:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:12:45,140 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 563 transitions. [2022-01-31 19:12:45,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.431372549019608) internal successors, (328), 50 states have internal predecessors, (328), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 19:12:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 563 transitions. [2022-01-31 19:12:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-01-31 19:12:45,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:12:45,143 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:12:45,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 19:12:45,143 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:12:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:12:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash -687641112, now seen corresponding path program 89 times [2022-01-31 19:12:45,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:12:45,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999461135] [2022-01-31 19:12:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:12:45,145 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:12:45,145 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:12:45,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:12:45,149 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:12:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:12:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:12:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:12:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:12:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:12:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:12:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:12:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:12:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:12:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:12:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:12:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:12:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:12:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:12:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:12:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:12:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:12:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:12:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:12:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:12:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:12:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:12:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:12:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:12:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:12:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:12:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:12:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:12:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:12:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:12:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:12:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:12:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:12:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:12:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:12:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:12:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:12:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:12:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:12:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:12:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 19:12:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 19:12:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 19:12:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 19:12:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 19:12:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-01-31 19:12:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:12:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:12:48,011 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:12:48,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999461135] [2022-01-31 19:12:48,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [999461135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:12:48,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:12:48,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 19:12:48,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048276328] [2022-01-31 19:12:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:12:48,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 19:12:48,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:12:48,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 19:12:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2966, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 19:12:48,013 INFO L87 Difference]: Start difference. First operand 561 states and 563 transitions. Second operand has 56 states, 55 states have (on average 6.036363636363636) internal successors, (332), 54 states have internal predecessors, (332), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 19:13:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:13:22,805 INFO L93 Difference]: Finished difference Result 574 states and 577 transitions. [2022-01-31 19:13:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-01-31 19:13:22,806 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 6.036363636363636) internal successors, (332), 54 states have internal predecessors, (332), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 558 [2022-01-31 19:13:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:13:22,807 INFO L225 Difference]: With dead ends: 574 [2022-01-31 19:13:22,807 INFO L226 Difference]: Without dead ends: 572 [2022-01-31 19:13:22,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11432 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=10239, Invalid=48567, Unknown=0, NotChecked=0, Total=58806 [2022-01-31 19:13:22,810 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 295 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 15316 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 15573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 15316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:13:22,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2620 Invalid, 15573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 15316 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-01-31 19:13:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-31 19:13:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 569. [2022-01-31 19:13:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 471 states have (on average 1.0063694267515924) internal successors, (474), 472 states have internal predecessors, (474), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:13:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 571 transitions. [2022-01-31 19:13:23,261 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 571 transitions. Word has length 558 [2022-01-31 19:13:23,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:13:23,261 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 571 transitions. [2022-01-31 19:13:23,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 6.036363636363636) internal successors, (332), 54 states have internal predecessors, (332), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-01-31 19:13:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 571 transitions. [2022-01-31 19:13:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2022-01-31 19:13:23,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:13:23,264 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:13:23,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 19:13:23,264 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:13:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:13:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash -270062689, now seen corresponding path program 90 times [2022-01-31 19:13:23,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:13:23,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193954267] [2022-01-31 19:13:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:13:23,266 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:13:23,266 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:13:23,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:13:23,270 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:13:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:13:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 19:13:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:13:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:13:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:13:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:13:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:13:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:13:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:13:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:13:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:13:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:13:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:13:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:13:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:13:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:13:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:13:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:13:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:13:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:13:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:13:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:13:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:13:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:13:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:13:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:13:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:13:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:13:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:13:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:13:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:13:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:13:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:13:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:13:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:13:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:13:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:13:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:13:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:13:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:13:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 19:13:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 19:13:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 19:13:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 19:13:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 19:13:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-01-31 19:13:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-01-31 19:13:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:13:24,209 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:13:24,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193954267] [2022-01-31 19:13:24,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [193954267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:13:24,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:13:24,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 19:13:24,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930656927] [2022-01-31 19:13:24,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:13:24,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 19:13:24,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:13:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 19:13:24,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 19:13:24,211 INFO L87 Difference]: Start difference. First operand 569 states and 571 transitions. Second operand has 52 states, 52 states have (on average 6.4423076923076925) internal successors, (335), 51 states have internal predecessors, (335), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 19:13:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:13:26,445 INFO L93 Difference]: Finished difference Result 962 states and 967 transitions. [2022-01-31 19:13:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 19:13:26,445 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.4423076923076925) internal successors, (335), 51 states have internal predecessors, (335), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 566 [2022-01-31 19:13:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:13:26,447 INFO L225 Difference]: With dead ends: 962 [2022-01-31 19:13:26,447 INFO L226 Difference]: Without dead ends: 575 [2022-01-31 19:13:26,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3539, Invalid=6361, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 19:13:26,448 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 118 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 19:13:26,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 345 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 19:13:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-01-31 19:13:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2022-01-31 19:13:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 475 states have (on average 1.0063157894736843) internal successors, (478), 476 states have internal predecessors, (478), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:13:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 575 transitions. [2022-01-31 19:13:26,911 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 575 transitions. Word has length 566 [2022-01-31 19:13:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:13:26,911 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 575 transitions. [2022-01-31 19:13:26,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.4423076923076925) internal successors, (335), 51 states have internal predecessors, (335), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 19:13:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 575 transitions. [2022-01-31 19:13:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-01-31 19:13:26,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:13:26,914 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:13:26,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 19:13:26,914 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:13:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:13:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash 997613082, now seen corresponding path program 91 times [2022-01-31 19:13:26,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:13:26,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386192373] [2022-01-31 19:13:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:13:26,916 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:13:26,916 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:13:26,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:13:26,920 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:13:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:13:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:13:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:13:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:13:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:13:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:13:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:13:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:13:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:13:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:13:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:13:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:13:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:13:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:13:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:13:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:13:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:13:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:13:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:13:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:13:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:13:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:13:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:13:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:13:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:13:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:13:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:13:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:13:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:13:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:13:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:13:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:13:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:13:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:13:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:13:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:13:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:13:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:13:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:13:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 19:13:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 19:13:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 19:13:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 19:13:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 19:13:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 19:13:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-01-31 19:13:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-01-31 19:13:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:13:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:13:29,969 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:13:29,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386192373] [2022-01-31 19:13:29,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1386192373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:13:29,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:13:29,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 19:13:29,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662714252] [2022-01-31 19:13:29,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:13:29,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 19:13:29,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:13:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 19:13:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3187, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 19:13:29,971 INFO L87 Difference]: Start difference. First operand 573 states and 575 transitions. Second operand has 58 states, 57 states have (on average 5.947368421052632) internal successors, (339), 56 states have internal predecessors, (339), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 19:14:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:14:09,090 INFO L93 Difference]: Finished difference Result 586 states and 589 transitions. [2022-01-31 19:14:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-01-31 19:14:09,091 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 5.947368421052632) internal successors, (339), 56 states have internal predecessors, (339), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 570 [2022-01-31 19:14:09,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:14:09,092 INFO L225 Difference]: With dead ends: 586 [2022-01-31 19:14:09,092 INFO L226 Difference]: Without dead ends: 584 [2022-01-31 19:14:09,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11924 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=10720, Invalid=51032, Unknown=0, NotChecked=0, Total=61752 [2022-01-31 19:14:09,096 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 296 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 16519 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 16779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 16519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:14:09,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2778 Invalid, 16779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 16519 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-01-31 19:14:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-01-31 19:14:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 581. [2022-01-31 19:14:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 481 states have (on average 1.0062370062370063) internal successors, (484), 482 states have internal predecessors, (484), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 19:14:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 583 transitions. [2022-01-31 19:14:09,579 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 583 transitions. Word has length 570 [2022-01-31 19:14:09,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:14:09,579 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 583 transitions. [2022-01-31 19:14:09,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 5.947368421052632) internal successors, (339), 56 states have internal predecessors, (339), 48 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 19:14:09,579 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 583 transitions. [2022-01-31 19:14:09,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2022-01-31 19:14:09,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:14:09,582 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:14:09,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 19:14:09,582 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:14:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:14:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -540554799, now seen corresponding path program 92 times [2022-01-31 19:14:09,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:14:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746847589] [2022-01-31 19:14:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:14:09,584 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:14:09,584 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:14:09,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:14:09,589 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:14:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:14:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 19:14:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:14:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:14:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:14:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:14:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:14:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:14:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:14:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:14:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:14:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:14:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:14:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:14:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:14:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:14:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:14:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:14:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:14:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:14:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:14:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:14:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:14:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:14:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:14:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:14:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:14:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:14:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:14:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:14:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:14:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:14:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:14:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:14:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:14:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:14:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:14:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:14:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:14:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 19:14:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 19:14:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 19:14:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 19:14:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 19:14:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 19:14:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-01-31 19:14:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-01-31 19:14:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-01-31 19:14:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:14:10,573 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:14:10,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746847589] [2022-01-31 19:14:10,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [746847589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:14:10,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:14:10,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 19:14:10,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083762187] [2022-01-31 19:14:10,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:14:10,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 19:14:10,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:14:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 19:14:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=1523, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 19:14:10,575 INFO L87 Difference]: Start difference. First operand 581 states and 583 transitions. Second operand has 53 states, 53 states have (on average 6.452830188679245) internal successors, (342), 52 states have internal predecessors, (342), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:14:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:14:12,817 INFO L93 Difference]: Finished difference Result 982 states and 987 transitions. [2022-01-31 19:14:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 19:14:12,822 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.452830188679245) internal successors, (342), 52 states have internal predecessors, (342), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 578 [2022-01-31 19:14:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:14:12,824 INFO L225 Difference]: With dead ends: 982 [2022-01-31 19:14:12,824 INFO L226 Difference]: Without dead ends: 587 [2022-01-31 19:14:12,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3686, Invalid=6616, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 19:14:12,825 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 120 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:14:12,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 340 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:14:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-01-31 19:14:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2022-01-31 19:14:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 485 states have (on average 1.0061855670103093) internal successors, (488), 486 states have internal predecessors, (488), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 19:14:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 587 transitions. [2022-01-31 19:14:13,313 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 587 transitions. Word has length 578 [2022-01-31 19:14:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:14:13,313 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 587 transitions. [2022-01-31 19:14:13,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.452830188679245) internal successors, (342), 52 states have internal predecessors, (342), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:14:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 587 transitions. [2022-01-31 19:14:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-01-31 19:14:13,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:14:13,316 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:14:13,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 19:14:13,316 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:14:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:14:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2098207692, now seen corresponding path program 93 times [2022-01-31 19:14:13,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:14:13,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924835821] [2022-01-31 19:14:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:14:13,318 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:14:13,318 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:14:13,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:14:13,323 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:14:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:14:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:14:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:14:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:14:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:14:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:14:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:14:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:14:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:14:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:14:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:14:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:14:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:14:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:14:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:14:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:14:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:14:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:14:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:14:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:14:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:14:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:14:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:14:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:14:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:14:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:14:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:14:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:14:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:14:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:14:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:14:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:14:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:14:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:14:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:14:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:14:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:14:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:14:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:14:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 19:14:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 19:14:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 19:14:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 19:14:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 19:14:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-01-31 19:14:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-01-31 19:14:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-01-31 19:14:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-01-31 19:14:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:14:16,799 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:14:16,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924835821] [2022-01-31 19:14:16,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1924835821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:14:16,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:14:16,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 19:14:16,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826376717] [2022-01-31 19:14:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:14:16,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 19:14:16,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:14:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 19:14:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=3295, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 19:14:16,801 INFO L87 Difference]: Start difference. First operand 585 states and 587 transitions. Second operand has 59 states, 58 states have (on average 5.9655172413793105) internal successors, (346), 57 states have internal predecessors, (346), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:14:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:14:53,266 INFO L93 Difference]: Finished difference Result 598 states and 601 transitions. [2022-01-31 19:14:53,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-01-31 19:14:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 5.9655172413793105) internal successors, (346), 57 states have internal predecessors, (346), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 582 [2022-01-31 19:14:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:14:53,269 INFO L225 Difference]: With dead ends: 598 [2022-01-31 19:14:53,269 INFO L226 Difference]: Without dead ends: 596 [2022-01-31 19:14:53,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12835 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=11078, Invalid=52678, Unknown=0, NotChecked=0, Total=63756 [2022-01-31 19:14:53,272 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 499 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 16223 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 16685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 16223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:14:53,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 2866 Invalid, 16685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 16223 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-01-31 19:14:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-01-31 19:14:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 593. [2022-01-31 19:14:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 491 states have (on average 1.0061099796334012) internal successors, (494), 492 states have internal predecessors, (494), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 19:14:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 595 transitions. [2022-01-31 19:14:53,782 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 595 transitions. Word has length 582 [2022-01-31 19:14:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:14:53,782 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 595 transitions. [2022-01-31 19:14:53,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 5.9655172413793105) internal successors, (346), 57 states have internal predecessors, (346), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-01-31 19:14:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 595 transitions. [2022-01-31 19:14:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-01-31 19:14:53,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:14:53,785 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:14:53,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 19:14:53,786 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:14:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:14:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 367637891, now seen corresponding path program 94 times [2022-01-31 19:14:53,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:14:53,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213078972] [2022-01-31 19:14:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:14:53,788 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:14:53,788 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:14:53,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:14:53,793 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:14:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:14:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 19:14:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 19:14:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 19:14:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 19:14:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 19:14:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 19:14:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 19:14:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 19:14:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 19:14:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 19:14:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 19:14:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 19:14:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 19:14:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 19:14:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 19:14:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 19:14:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 19:14:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 19:14:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 19:14:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 19:14:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 19:14:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 19:14:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 19:14:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 19:14:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 19:14:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 19:14:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 19:14:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 19:14:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 19:14:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 19:14:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 19:14:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 19:14:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 19:14:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 19:14:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 19:14:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 19:14:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 19:14:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 19:14:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 19:14:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 19:14:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 19:14:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 19:14:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 19:14:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-01-31 19:14:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-01-31 19:14:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-01-31 19:14:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-01-31 19:14:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-01-31 19:14:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:14:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:14:54,807 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:14:54,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213078972] [2022-01-31 19:14:54,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [213078972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:14:54,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:14:54,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 19:14:54,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809581614] [2022-01-31 19:14:54,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:14:54,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 19:14:54,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:14:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 19:14:54,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1283, Invalid=1579, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 19:14:54,808 INFO L87 Difference]: Start difference. First operand 593 states and 595 transitions. Second operand has 54 states, 54 states have (on average 6.462962962962963) internal successors, (349), 53 states have internal predecessors, (349), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 19:14:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:14:57,161 INFO L93 Difference]: Finished difference Result 1002 states and 1007 transitions. [2022-01-31 19:14:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 19:14:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.462962962962963) internal successors, (349), 53 states have internal predecessors, (349), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 590 [2022-01-31 19:14:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:14:57,163 INFO L225 Difference]: With dead ends: 1002 [2022-01-31 19:14:57,163 INFO L226 Difference]: Without dead ends: 599 [2022-01-31 19:14:57,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3836, Invalid=6876, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 19:14:57,165 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 122 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 19:14:57,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 352 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 19:14:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-01-31 19:14:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2022-01-31 19:14:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 495 states have (on average 1.006060606060606) internal successors, (498), 496 states have internal predecessors, (498), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-01-31 19:14:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 599 transitions. [2022-01-31 19:14:57,683 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 599 transitions. Word has length 590 [2022-01-31 19:14:57,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:14:57,683 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 599 transitions. [2022-01-31 19:14:57,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.462962962962963) internal successors, (349), 53 states have internal predecessors, (349), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 19:14:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 599 transitions. [2022-01-31 19:14:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-01-31 19:14:57,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:14:57,686 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:14:57,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 19:14:57,687 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:14:57,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:14:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1454892798, now seen corresponding path program 95 times [2022-01-31 19:14:57,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:14:57,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93309310] [2022-01-31 19:14:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:14:57,688 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:14:57,689 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:14:57,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:14:57,694 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:14:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:15:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 19:15:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 19:15:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 19:15:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 19:15:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 19:15:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 19:15:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 19:15:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 19:15:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 19:15:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 19:15:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 19:15:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 19:15:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 19:15:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 19:15:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 19:15:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 19:15:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 19:15:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 19:15:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 19:15:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 19:15:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 19:15:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 19:15:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 19:15:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 19:15:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 19:15:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 19:15:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 19:15:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 19:15:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 19:15:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 19:15:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 19:15:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 19:15:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 19:15:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 19:15:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 19:15:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 19:15:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 19:15:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 19:15:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 19:15:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 19:15:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 19:15:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 19:15:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 19:15:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-01-31 19:15:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-01-31 19:15:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-01-31 19:15:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-01-31 19:15:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-01-31 19:15:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:15:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 19:15:03,895 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:15:03,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93309310] [2022-01-31 19:15:03,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [93309310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:15:03,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:15:03,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 19:15:03,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061855829] [2022-01-31 19:15:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:15:03,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 19:15:03,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:15:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 19:15:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1537, Invalid=9805, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 19:15:03,898 INFO L87 Difference]: Start difference. First operand 597 states and 599 transitions. Second operand has 107 states, 106 states have (on average 3.330188679245283) internal successors, (353), 105 states have internal predecessors, (353), 50 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49)