/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/reducercommutativity/max60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 18:34:57,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 18:34:57,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 18:34:57,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 18:34:57,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 18:34:57,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 18:34:57,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 18:34:57,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 18:34:57,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 18:34:57,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 18:34:57,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 18:34:57,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 18:34:57,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 18:34:57,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 18:34:57,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 18:34:57,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 18:34:57,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 18:34:57,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 18:34:57,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 18:34:57,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 18:34:57,731 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 18:34:57,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 18:34:57,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 18:34:57,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 18:34:57,739 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 18:34:57,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 18:34:57,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 18:34:57,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 18:34:57,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 18:34:57,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 18:34:57,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 18:34:57,741 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 18:34:57,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 18:34:57,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 18:34:57,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 18:34:57,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 18:34:57,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 18:34:57,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 18:34:57,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 18:34:57,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:34:57,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 18:34:57,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 18:34:57,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 18:34:57,748 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 18:34:57,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 18:34:57,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 18:34:58,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 18:34:58,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 18:34:58,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 18:34:58,008 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 18:34:58,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max60-2.i [2022-01-31 18:34:58,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00fda8b8f/d739b56f494549a9843e1cb64a15d8f7/FLAG5babdf79e [2022-01-31 18:34:58,456 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 18:34:58,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max60-2.i [2022-01-31 18:34:58,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00fda8b8f/d739b56f494549a9843e1cb64a15d8f7/FLAG5babdf79e [2022-01-31 18:34:58,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00fda8b8f/d739b56f494549a9843e1cb64a15d8f7 [2022-01-31 18:34:58,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 18:34:58,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 18:34:58,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 18:34:58,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 18:34:58,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 18:34:58,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c53d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58, skipping insertion in model container [2022-01-31 18:34:58,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 18:34:58,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 18:34:58,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max60-2.i[1290,1303] [2022-01-31 18:34:58,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:34:58,729 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 18:34:58,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max60-2.i[1290,1303] [2022-01-31 18:34:58,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:34:58,755 INFO L208 MainTranslator]: Completed translation [2022-01-31 18:34:58,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58 WrapperNode [2022-01-31 18:34:58,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 18:34:58,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 18:34:58,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 18:34:58,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 18:34:58,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 18:34:58,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 18:34:58,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 18:34:58,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 18:34:58,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (1/1) ... [2022-01-31 18:34:58,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:34:58,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 18:34:58,829 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 18:34:58,839 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 18:34:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 18:34:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 18:34:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 18:34:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-01-31 18:34:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 18:34:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 18:34:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 18:34:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 18:34:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 18:34:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 18:34:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 18:34:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 18:34:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-01-31 18:34:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 18:34:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 18:34:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 18:34:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 18:34:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 18:34:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 18:34:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 18:34:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 18:34:58,931 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 18:34:58,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 18:34:59,042 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 18:34:59,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 18:34:59,047 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 18:34:59,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:34:59 BoogieIcfgContainer [2022-01-31 18:34:59,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 18:34:59,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 18:34:59,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 18:34:59,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 18:34:59,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:34:58" (1/3) ... [2022-01-31 18:34:59,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d218c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:34:59, skipping insertion in model container [2022-01-31 18:34:59,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:34:58" (2/3) ... [2022-01-31 18:34:59,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d218c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:34:59, skipping insertion in model container [2022-01-31 18:34:59,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:34:59" (3/3) ... [2022-01-31 18:34:59,056 INFO L111 eAbstractionObserver]: Analyzing ICFG max60-2.i [2022-01-31 18:34:59,060 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 18:34:59,060 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 18:34:59,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 18:34:59,101 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 18:34:59,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 18:34:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 18:34:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-31 18:34:59,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:59,117 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:59,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:59,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1752078259, now seen corresponding path program 1 times [2022-01-31 18:34:59,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:59,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542493995] [2022-01-31 18:34:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:59,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:59,191 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 18:34:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 18:34:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:34:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:34:59,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:59,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542493995] [2022-01-31 18:34:59,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1542493995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:59,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:59,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:34:59,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300839589] [2022-01-31 18:34:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:59,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:34:59,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:34:59,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:34:59,413 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:34:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:59,556 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2022-01-31 18:34:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:34:59,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-31 18:34:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:59,568 INFO L225 Difference]: With dead ends: 60 [2022-01-31 18:34:59,568 INFO L226 Difference]: Without dead ends: 30 [2022-01-31 18:34:59,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:34:59,573 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:59,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:34:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-31 18:34:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-31 18:34:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-01-31 18:34:59,611 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2022-01-31 18:34:59,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:59,612 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-01-31 18:34:59,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:34:59,612 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-01-31 18:34:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-31 18:34:59,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:59,614 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:59,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 18:34:59,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash 279578018, now seen corresponding path program 1 times [2022-01-31 18:34:59,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:59,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861005729] [2022-01-31 18:34:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:59,632 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:59,632 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:59,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:59,634 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 18:34:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 18:34:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:34:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-31 18:34:59,757 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:34:59,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861005729] [2022-01-31 18:34:59,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [861005729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:34:59,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:34:59,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:34:59,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151417170] [2022-01-31 18:34:59,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:34:59,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:34:59,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:34:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:34:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:34:59,760 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:34:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:34:59,912 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-01-31 18:34:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:34:59,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-01-31 18:34:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:34:59,915 INFO L225 Difference]: With dead ends: 56 [2022-01-31 18:34:59,915 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 18:34:59,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:34:59,916 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:34:59,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 42 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:34:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 18:34:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-01-31 18:34:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:34:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-31 18:34:59,925 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 34 [2022-01-31 18:34:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:34:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-31 18:34:59,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:34:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-31 18:34:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 18:34:59,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:34:59,932 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:34:59,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 18:34:59,932 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:34:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:34:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash -642115777, now seen corresponding path program 1 times [2022-01-31 18:34:59,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:34:59,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84894695] [2022-01-31 18:34:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:34:59,936 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:34:59,936 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:34:59,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:34:59,938 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:34:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:34:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:34:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:34:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 18:35:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:35:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 18:35:00,046 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84894695] [2022-01-31 18:35:00,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [84894695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:00,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:00,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:35:00,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341983080] [2022-01-31 18:35:00,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:00,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:35:00,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:00,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:35:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:35:00,049 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:00,160 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-01-31 18:35:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:35:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-01-31 18:35:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:00,162 INFO L225 Difference]: With dead ends: 59 [2022-01-31 18:35:00,162 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 18:35:00,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:35:00,164 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:00,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 39 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 18:35:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-01-31 18:35:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-01-31 18:35:00,178 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 48 [2022-01-31 18:35:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:00,178 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-01-31 18:35:00,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-01-31 18:35:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 18:35:00,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:00,179 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:00,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 18:35:00,180 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1928555366, now seen corresponding path program 2 times [2022-01-31 18:35:00,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:00,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900573012] [2022-01-31 18:35:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:00,187 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:00,187 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:00,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:00,190 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:35:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:35:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:35:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:00,308 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:00,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900573012] [2022-01-31 18:35:00,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1900573012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:00,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:00,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 18:35:00,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8997304] [2022-01-31 18:35:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:00,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 18:35:00,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 18:35:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:35:00,314 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:00,374 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-01-31 18:35:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 18:35:00,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-01-31 18:35:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:00,377 INFO L225 Difference]: With dead ends: 57 [2022-01-31 18:35:00,378 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 18:35:00,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:35:00,389 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:00,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 35 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:35:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 18:35:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-01-31 18:35:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-01-31 18:35:00,399 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 60 [2022-01-31 18:35:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:00,400 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-01-31 18:35:00,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-01-31 18:35:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 18:35:00,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:00,402 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:00,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 18:35:00,403 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 507059448, now seen corresponding path program 1 times [2022-01-31 18:35:00,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:00,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73312321] [2022-01-31 18:35:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:00,406 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:00,406 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:00,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:00,408 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:35:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:35:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:35:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:00,612 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:00,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73312321] [2022-01-31 18:35:00,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [73312321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:00,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:00,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 18:35:00,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831165530] [2022-01-31 18:35:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:00,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 18:35:00,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:00,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 18:35:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 18:35:00,614 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:00,689 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-01-31 18:35:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 18:35:00,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-01-31 18:35:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:00,692 INFO L225 Difference]: With dead ends: 59 [2022-01-31 18:35:00,692 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 18:35:00,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:35:00,697 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:00,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:35:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 18:35:00,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 18:35:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-01-31 18:35:00,717 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 62 [2022-01-31 18:35:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:00,718 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-01-31 18:35:00,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-01-31 18:35:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 18:35:00,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:00,719 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:00,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 18:35:00,719 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash 375719382, now seen corresponding path program 2 times [2022-01-31 18:35:00,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:00,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466022385] [2022-01-31 18:35:00,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:00,723 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:00,723 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:00,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:00,724 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 18:35:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 18:35:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:35:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:00,867 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:00,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466022385] [2022-01-31 18:35:00,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1466022385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:00,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:00,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:35:00,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287284435] [2022-01-31 18:35:00,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:00,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:35:00,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:35:00,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:35:00,873 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:00,947 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-01-31 18:35:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:35:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-01-31 18:35:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:00,949 INFO L225 Difference]: With dead ends: 70 [2022-01-31 18:35:00,949 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 18:35:00,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:35:00,950 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:00,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:35:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 18:35:00,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-01-31 18:35:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-31 18:35:00,961 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 64 [2022-01-31 18:35:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:00,961 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-31 18:35:00,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:00,962 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-31 18:35:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 18:35:00,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:00,967 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:00,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 18:35:00,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:00,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2079708648, now seen corresponding path program 3 times [2022-01-31 18:35:00,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:00,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279072576] [2022-01-31 18:35:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:00,973 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:00,973 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:00,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:00,975 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 18:35:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 18:35:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:35:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:01,109 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:01,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279072576] [2022-01-31 18:35:01,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [279072576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:01,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:01,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:35:01,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656528822] [2022-01-31 18:35:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:01,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:35:01,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:35:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:35:01,119 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:01,210 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2022-01-31 18:35:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:35:01,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-01-31 18:35:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:01,214 INFO L225 Difference]: With dead ends: 72 [2022-01-31 18:35:01,214 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 18:35:01,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:35:01,218 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:01,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 35 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 18:35:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-01-31 18:35:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-01-31 18:35:01,232 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 66 [2022-01-31 18:35:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:01,233 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-01-31 18:35:01,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-01-31 18:35:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 18:35:01,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:01,235 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:01,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 18:35:01,236 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:01,236 INFO L85 PathProgramCache]: Analyzing trace with hash 485967322, now seen corresponding path program 4 times [2022-01-31 18:35:01,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:01,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800335651] [2022-01-31 18:35:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:01,239 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:01,239 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:01,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:01,241 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 18:35:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 18:35:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:35:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:01,342 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:01,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800335651] [2022-01-31 18:35:01,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800335651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:01,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:01,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:35:01,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87674290] [2022-01-31 18:35:01,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:01,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:35:01,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:35:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:35:01,344 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:01,460 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2022-01-31 18:35:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:35:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2022-01-31 18:35:01,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:01,462 INFO L225 Difference]: With dead ends: 74 [2022-01-31 18:35:01,462 INFO L226 Difference]: Without dead ends: 46 [2022-01-31 18:35:01,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:35:01,463 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:01,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 45 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-31 18:35:01,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-01-31 18:35:01,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-01-31 18:35:01,472 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 68 [2022-01-31 18:35:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:01,472 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-01-31 18:35:01,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-01-31 18:35:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 18:35:01,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:01,473 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:01,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 18:35:01,474 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash 789346588, now seen corresponding path program 5 times [2022-01-31 18:35:01,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:01,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108990003] [2022-01-31 18:35:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:01,476 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:01,476 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:01,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:01,478 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 18:35:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 18:35:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:35:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:01,559 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:01,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108990003] [2022-01-31 18:35:01,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1108990003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:01,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:01,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:35:01,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10526187] [2022-01-31 18:35:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:01,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:35:01,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:35:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:35:01,561 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:01,698 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2022-01-31 18:35:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:35:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-01-31 18:35:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:01,699 INFO L225 Difference]: With dead ends: 76 [2022-01-31 18:35:01,699 INFO L226 Difference]: Without dead ends: 48 [2022-01-31 18:35:01,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:35:01,700 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:01,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 45 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-31 18:35:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-01-31 18:35:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-01-31 18:35:01,711 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 70 [2022-01-31 18:35:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:01,711 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-01-31 18:35:01,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-01-31 18:35:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 18:35:01,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:01,713 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:01,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 18:35:01,713 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash 279045086, now seen corresponding path program 6 times [2022-01-31 18:35:01,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:01,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897596673] [2022-01-31 18:35:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:01,717 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:01,717 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:01,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:01,719 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 18:35:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 18:35:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:35:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:01,824 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:01,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897596673] [2022-01-31 18:35:01,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [897596673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:01,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:01,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:35:01,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627042038] [2022-01-31 18:35:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:01,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:35:01,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:35:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:35:01,835 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:01,959 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2022-01-31 18:35:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:35:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2022-01-31 18:35:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:01,960 INFO L225 Difference]: With dead ends: 78 [2022-01-31 18:35:01,960 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 18:35:01,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:35:01,961 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:01,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 45 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 18:35:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 18:35:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-01-31 18:35:01,967 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 72 [2022-01-31 18:35:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:01,968 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-01-31 18:35:01,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-01-31 18:35:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 18:35:01,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:01,969 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:01,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 18:35:01,969 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:01,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash -494426592, now seen corresponding path program 7 times [2022-01-31 18:35:01,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:01,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017210444] [2022-01-31 18:35:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:01,971 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:01,972 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:01,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:01,973 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 18:35:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 18:35:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:35:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:02,075 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:02,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017210444] [2022-01-31 18:35:02,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1017210444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:02,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:02,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:35:02,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447135192] [2022-01-31 18:35:02,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:02,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:35:02,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:35:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:35:02,077 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:02,372 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2022-01-31 18:35:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:35:02,373 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-01-31 18:35:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:02,373 INFO L225 Difference]: With dead ends: 80 [2022-01-31 18:35:02,373 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 18:35:02,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:35:02,374 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:02,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 18:35:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-01-31 18:35:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-01-31 18:35:02,380 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 74 [2022-01-31 18:35:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:02,380 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-01-31 18:35:02,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-01-31 18:35:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 18:35:02,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:02,381 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:02,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 18:35:02,382 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:02,382 INFO L85 PathProgramCache]: Analyzing trace with hash -771366942, now seen corresponding path program 8 times [2022-01-31 18:35:02,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:02,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40108665] [2022-01-31 18:35:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:02,384 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:02,384 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:02,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:02,386 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 18:35:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 18:35:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:35:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:02,498 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:02,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40108665] [2022-01-31 18:35:02,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [40108665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:02,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:02,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:35:02,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34848790] [2022-01-31 18:35:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:02,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:35:02,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:35:02,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:35:02,500 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:02,668 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2022-01-31 18:35:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:35:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2022-01-31 18:35:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:02,669 INFO L225 Difference]: With dead ends: 82 [2022-01-31 18:35:02,669 INFO L226 Difference]: Without dead ends: 54 [2022-01-31 18:35:02,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:35:02,670 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:02,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-31 18:35:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-01-31 18:35:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-01-31 18:35:02,676 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 76 [2022-01-31 18:35:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:02,676 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-01-31 18:35:02,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-01-31 18:35:02,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 18:35:02,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:02,677 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:02,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 18:35:02,678 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash -623070940, now seen corresponding path program 9 times [2022-01-31 18:35:02,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:02,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408242858] [2022-01-31 18:35:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:02,680 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:02,681 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:02,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:02,682 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 18:35:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 18:35:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:35:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:02,822 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:02,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408242858] [2022-01-31 18:35:02,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1408242858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:02,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:02,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:35:02,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205731045] [2022-01-31 18:35:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:02,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:35:02,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:35:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:35:02,824 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:03,016 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2022-01-31 18:35:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:35:03,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2022-01-31 18:35:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:03,025 INFO L225 Difference]: With dead ends: 84 [2022-01-31 18:35:03,025 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 18:35:03,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:35:03,027 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 42 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:03,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 45 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 18:35:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-01-31 18:35:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2022-01-31 18:35:03,039 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 78 [2022-01-31 18:35:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:03,040 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2022-01-31 18:35:03,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2022-01-31 18:35:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 18:35:03,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:03,041 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:03,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 18:35:03,041 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 155466214, now seen corresponding path program 10 times [2022-01-31 18:35:03,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:03,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517363774] [2022-01-31 18:35:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:03,044 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:03,045 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:03,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:03,046 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 18:35:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 18:35:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:35:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:03,172 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517363774] [2022-01-31 18:35:03,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1517363774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:03,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:03,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 18:35:03,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398868559] [2022-01-31 18:35:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:03,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 18:35:03,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 18:35:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 18:35:03,174 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:03,371 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2022-01-31 18:35:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 18:35:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2022-01-31 18:35:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:03,372 INFO L225 Difference]: With dead ends: 86 [2022-01-31 18:35:03,372 INFO L226 Difference]: Without dead ends: 58 [2022-01-31 18:35:03,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:35:03,373 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:03,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 50 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-31 18:35:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2022-01-31 18:35:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2022-01-31 18:35:03,379 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 80 [2022-01-31 18:35:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:03,379 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2022-01-31 18:35:03,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2022-01-31 18:35:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 18:35:03,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:03,380 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:03,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 18:35:03,381 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:03,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1005361704, now seen corresponding path program 11 times [2022-01-31 18:35:03,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:03,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748336392] [2022-01-31 18:35:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:03,383 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:03,383 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:03,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:03,384 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 18:35:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 18:35:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:35:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:03,515 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:03,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748336392] [2022-01-31 18:35:03,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1748336392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:03,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:03,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 18:35:03,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194203780] [2022-01-31 18:35:03,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:03,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 18:35:03,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 18:35:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:35:03,518 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:03,723 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2022-01-31 18:35:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 18:35:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2022-01-31 18:35:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:03,724 INFO L225 Difference]: With dead ends: 88 [2022-01-31 18:35:03,724 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 18:35:03,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:35:03,725 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:03,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 50 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 18:35:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-01-31 18:35:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-01-31 18:35:03,733 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 82 [2022-01-31 18:35:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:03,734 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-01-31 18:35:03,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-01-31 18:35:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 18:35:03,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:03,735 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:03,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 18:35:03,736 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1711141354, now seen corresponding path program 12 times [2022-01-31 18:35:03,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:03,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346124185] [2022-01-31 18:35:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:03,738 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:03,738 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:03,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:03,740 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 18:35:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 18:35:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:35:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:03,914 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:03,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346124185] [2022-01-31 18:35:03,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [346124185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:03,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:03,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 18:35:03,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169855040] [2022-01-31 18:35:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:03,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 18:35:03,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 18:35:03,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 18:35:03,916 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:04,144 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2022-01-31 18:35:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 18:35:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 84 [2022-01-31 18:35:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:04,145 INFO L225 Difference]: With dead ends: 90 [2022-01-31 18:35:04,145 INFO L226 Difference]: Without dead ends: 62 [2022-01-31 18:35:04,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:35:04,147 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:04,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 40 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-31 18:35:04,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2022-01-31 18:35:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-01-31 18:35:04,154 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 84 [2022-01-31 18:35:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:04,154 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-01-31 18:35:04,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-01-31 18:35:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 18:35:04,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:04,155 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:04,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 18:35:04,155 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1360552236, now seen corresponding path program 13 times [2022-01-31 18:35:04,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:04,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290982235] [2022-01-31 18:35:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:04,158 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:04,158 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:04,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:04,160 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 18:35:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 18:35:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:35:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:04,330 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:04,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290982235] [2022-01-31 18:35:04,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [290982235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:04,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:04,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 18:35:04,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064689827] [2022-01-31 18:35:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:04,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 18:35:04,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 18:35:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:35:04,331 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:04,552 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2022-01-31 18:35:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 18:35:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2022-01-31 18:35:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:04,553 INFO L225 Difference]: With dead ends: 92 [2022-01-31 18:35:04,554 INFO L226 Difference]: Without dead ends: 64 [2022-01-31 18:35:04,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:35:04,555 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 50 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:04,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 35 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-31 18:35:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-01-31 18:35:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2022-01-31 18:35:04,561 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 86 [2022-01-31 18:35:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:04,561 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2022-01-31 18:35:04,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2022-01-31 18:35:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-31 18:35:04,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:04,562 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:04,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 18:35:04,563 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:04,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:04,563 INFO L85 PathProgramCache]: Analyzing trace with hash -548141074, now seen corresponding path program 14 times [2022-01-31 18:35:04,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:04,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617263003] [2022-01-31 18:35:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:04,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:04,565 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:04,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:04,566 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 18:35:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 18:35:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:35:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:04,746 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617263003] [2022-01-31 18:35:04,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [617263003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:04,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:04,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 18:35:04,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397844709] [2022-01-31 18:35:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:04,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 18:35:04,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:04,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 18:35:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:35:04,747 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:05,001 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2022-01-31 18:35:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:35:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 88 [2022-01-31 18:35:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:05,002 INFO L225 Difference]: With dead ends: 94 [2022-01-31 18:35:05,002 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 18:35:05,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:35:05,003 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:05,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 50 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 18:35:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2022-01-31 18:35:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2022-01-31 18:35:05,011 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 88 [2022-01-31 18:35:05,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:05,011 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2022-01-31 18:35:05,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:05,011 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2022-01-31 18:35:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-31 18:35:05,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:05,012 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:05,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 18:35:05,012 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash -851376592, now seen corresponding path program 15 times [2022-01-31 18:35:05,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:05,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014088614] [2022-01-31 18:35:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:05,015 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:05,015 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:05,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:05,016 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 18:35:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 18:35:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:35:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:05,203 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:05,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014088614] [2022-01-31 18:35:05,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1014088614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:05,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:05,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 18:35:05,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224024133] [2022-01-31 18:35:05,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:05,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 18:35:05,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 18:35:05,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:35:05,205 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:05,504 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2022-01-31 18:35:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 18:35:05,504 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 90 [2022-01-31 18:35:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:05,505 INFO L225 Difference]: With dead ends: 96 [2022-01-31 18:35:05,505 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 18:35:05,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:35:05,506 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:05,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 60 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 18:35:05,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-01-31 18:35:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-01-31 18:35:05,513 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 90 [2022-01-31 18:35:05,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:05,514 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-01-31 18:35:05,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-01-31 18:35:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-31 18:35:05,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:05,515 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:05,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 18:35:05,515 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:05,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -202933262, now seen corresponding path program 16 times [2022-01-31 18:35:05,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:05,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551022108] [2022-01-31 18:35:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:05,517 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:05,517 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:05,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:05,519 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 18:35:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 18:35:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:35:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:05,737 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:05,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551022108] [2022-01-31 18:35:05,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [551022108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:05,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:05,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 18:35:05,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024124642] [2022-01-31 18:35:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:05,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 18:35:05,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 18:35:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 18:35:05,739 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:06,050 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2022-01-31 18:35:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 18:35:06,051 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2022-01-31 18:35:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:06,051 INFO L225 Difference]: With dead ends: 98 [2022-01-31 18:35:06,051 INFO L226 Difference]: Without dead ends: 70 [2022-01-31 18:35:06,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:35:06,053 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:06,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 50 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-31 18:35:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-01-31 18:35:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-01-31 18:35:06,060 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 92 [2022-01-31 18:35:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:06,060 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-01-31 18:35:06,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-01-31 18:35:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 18:35:06,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:06,061 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:06,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 18:35:06,062 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 180848948, now seen corresponding path program 17 times [2022-01-31 18:35:06,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:06,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46423386] [2022-01-31 18:35:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:06,064 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:06,064 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:06,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:06,065 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 18:35:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 18:35:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:35:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:06,302 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:06,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46423386] [2022-01-31 18:35:06,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [46423386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:06,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:06,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 18:35:06,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384610105] [2022-01-31 18:35:06,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:06,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 18:35:06,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 18:35:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:35:06,304 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:06,621 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-01-31 18:35:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 18:35:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 94 [2022-01-31 18:35:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:06,622 INFO L225 Difference]: With dead ends: 100 [2022-01-31 18:35:06,622 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 18:35:06,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:35:06,624 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 58 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:06,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 45 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:06,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 18:35:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-01-31 18:35:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-01-31 18:35:06,632 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 94 [2022-01-31 18:35:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:06,632 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-01-31 18:35:06,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-01-31 18:35:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-31 18:35:06,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:06,633 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:06,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 18:35:06,633 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:06,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash -371634698, now seen corresponding path program 18 times [2022-01-31 18:35:06,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:06,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527866106] [2022-01-31 18:35:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:06,636 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:06,636 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:06,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:06,638 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 18:35:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 18:35:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:35:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:06,880 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527866106] [2022-01-31 18:35:06,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [527866106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:06,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:06,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 18:35:06,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835857188] [2022-01-31 18:35:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:06,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 18:35:06,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 18:35:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:35:06,882 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:07,246 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2022-01-31 18:35:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 18:35:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2022-01-31 18:35:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:07,247 INFO L225 Difference]: With dead ends: 102 [2022-01-31 18:35:07,247 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 18:35:07,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:35:07,249 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:07,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 50 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 18:35:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-01-31 18:35:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-01-31 18:35:07,256 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 96 [2022-01-31 18:35:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:07,257 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-01-31 18:35:07,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-01-31 18:35:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-31 18:35:07,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:07,258 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:07,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 18:35:07,258 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:07,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1267526200, now seen corresponding path program 19 times [2022-01-31 18:35:07,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:07,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496910109] [2022-01-31 18:35:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:07,260 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:07,260 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:07,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:07,262 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 18:35:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 18:35:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:07,513 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496910109] [2022-01-31 18:35:07,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1496910109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:07,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:07,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 18:35:07,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170332647] [2022-01-31 18:35:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:07,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 18:35:07,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 18:35:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:35:07,514 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:07,874 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2022-01-31 18:35:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 18:35:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2022-01-31 18:35:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:07,875 INFO L225 Difference]: With dead ends: 104 [2022-01-31 18:35:07,875 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 18:35:07,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:35:07,876 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:07,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 50 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 18:35:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-01-31 18:35:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2022-01-31 18:35:07,884 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 98 [2022-01-31 18:35:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:07,884 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2022-01-31 18:35:07,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2022-01-31 18:35:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-31 18:35:07,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:07,885 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:07,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 18:35:07,886 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 248151546, now seen corresponding path program 20 times [2022-01-31 18:35:07,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:07,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475164652] [2022-01-31 18:35:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:07,888 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:07,888 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:07,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:07,889 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 18:35:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 18:35:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:35:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:08,165 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:08,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475164652] [2022-01-31 18:35:08,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1475164652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:08,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:08,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 18:35:08,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258999669] [2022-01-31 18:35:08,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:08,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 18:35:08,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 18:35:08,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 18:35:08,167 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:08,519 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2022-01-31 18:35:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 18:35:08,519 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 100 [2022-01-31 18:35:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:08,520 INFO L225 Difference]: With dead ends: 106 [2022-01-31 18:35:08,520 INFO L226 Difference]: Without dead ends: 78 [2022-01-31 18:35:08,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 18:35:08,521 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 64 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:08,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 45 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-31 18:35:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-01-31 18:35:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2022-01-31 18:35:08,530 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 100 [2022-01-31 18:35:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:08,530 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2022-01-31 18:35:08,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2022-01-31 18:35:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 18:35:08,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:08,531 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:08,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 18:35:08,531 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -118347460, now seen corresponding path program 21 times [2022-01-31 18:35:08,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558127964] [2022-01-31 18:35:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:08,534 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:08,534 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:08,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:08,536 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 18:35:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 18:35:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:35:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:08,802 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:08,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558127964] [2022-01-31 18:35:08,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1558127964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:08,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:08,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 18:35:08,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70995754] [2022-01-31 18:35:08,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:08,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 18:35:08,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 18:35:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:35:08,803 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:09,208 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2022-01-31 18:35:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 18:35:09,209 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 102 [2022-01-31 18:35:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:09,210 INFO L225 Difference]: With dead ends: 108 [2022-01-31 18:35:09,210 INFO L226 Difference]: Without dead ends: 80 [2022-01-31 18:35:09,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 18:35:09,211 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:09,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 50 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-01-31 18:35:09,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-01-31 18:35:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2022-01-31 18:35:09,222 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 102 [2022-01-31 18:35:09,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:09,222 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2022-01-31 18:35:09,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2022-01-31 18:35:09,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-31 18:35:09,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:09,227 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:09,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 18:35:09,227 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:09,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash -136573954, now seen corresponding path program 22 times [2022-01-31 18:35:09,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:09,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974448001] [2022-01-31 18:35:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:09,231 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:09,231 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:09,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:09,234 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 18:35:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 18:35:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:35:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:09,575 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:09,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974448001] [2022-01-31 18:35:09,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [974448001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:09,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:09,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 18:35:09,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447172116] [2022-01-31 18:35:09,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:09,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 18:35:09,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:09,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 18:35:09,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 18:35:09,578 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:10,040 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2022-01-31 18:35:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:35:10,041 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 104 [2022-01-31 18:35:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:10,042 INFO L225 Difference]: With dead ends: 110 [2022-01-31 18:35:10,042 INFO L226 Difference]: Without dead ends: 82 [2022-01-31 18:35:10,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:35:10,044 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:10,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 50 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-31 18:35:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-01-31 18:35:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2022-01-31 18:35:10,058 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 104 [2022-01-31 18:35:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:10,058 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2022-01-31 18:35:10,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:10,058 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2022-01-31 18:35:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-31 18:35:10,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:10,061 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:10,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 18:35:10,061 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:10,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash -472365504, now seen corresponding path program 23 times [2022-01-31 18:35:10,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:10,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339659239] [2022-01-31 18:35:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:10,064 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:10,064 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:10,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:10,066 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 18:35:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 18:35:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:35:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:10,448 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:10,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339659239] [2022-01-31 18:35:10,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1339659239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:10,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:10,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 18:35:10,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238768325] [2022-01-31 18:35:10,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:10,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 18:35:10,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 18:35:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:35:10,450 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 26 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:10,916 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2022-01-31 18:35:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 18:35:10,918 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 26 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 106 [2022-01-31 18:35:10,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:10,918 INFO L225 Difference]: With dead ends: 112 [2022-01-31 18:35:10,918 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 18:35:10,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:35:10,920 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 70 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:10,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 60 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 18:35:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2022-01-31 18:35:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2022-01-31 18:35:10,930 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 106 [2022-01-31 18:35:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:10,930 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2022-01-31 18:35:10,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 26 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2022-01-31 18:35:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-31 18:35:10,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:10,931 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:10,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 18:35:10,932 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1045497854, now seen corresponding path program 24 times [2022-01-31 18:35:10,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:10,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409379804] [2022-01-31 18:35:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:10,937 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:10,937 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:10,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:10,939 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:11,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 18:35:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 18:35:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:35:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:11,265 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:11,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409379804] [2022-01-31 18:35:11,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1409379804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:11,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:11,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:35:11,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131373185] [2022-01-31 18:35:11,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:11,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:35:11,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:35:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:35:11,267 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:11,724 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2022-01-31 18:35:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 18:35:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2022-01-31 18:35:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:11,725 INFO L225 Difference]: With dead ends: 114 [2022-01-31 18:35:11,726 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 18:35:11,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:35:11,727 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 72 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:11,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 55 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 18:35:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-01-31 18:35:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-01-31 18:35:11,739 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 108 [2022-01-31 18:35:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:11,739 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-01-31 18:35:11,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-01-31 18:35:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 18:35:11,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:11,740 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:11,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 18:35:11,740 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2069872316, now seen corresponding path program 25 times [2022-01-31 18:35:11,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:11,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377268217] [2022-01-31 18:35:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:11,743 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:11,743 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:11,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:11,745 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 18:35:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 18:35:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:35:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:12,089 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:12,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377268217] [2022-01-31 18:35:12,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1377268217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:12,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:12,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:35:12,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126687158] [2022-01-31 18:35:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:12,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:35:12,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:35:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:35:12,091 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:12,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:12,874 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2022-01-31 18:35:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 18:35:12,874 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 110 [2022-01-31 18:35:12,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:12,875 INFO L225 Difference]: With dead ends: 116 [2022-01-31 18:35:12,875 INFO L226 Difference]: Without dead ends: 88 [2022-01-31 18:35:12,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:35:12,877 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:12,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 45 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-31 18:35:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-01-31 18:35:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2022-01-31 18:35:12,887 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 110 [2022-01-31 18:35:12,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:12,887 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2022-01-31 18:35:12,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2022-01-31 18:35:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-31 18:35:12,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:12,890 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:12,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 18:35:12,890 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:12,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1348747782, now seen corresponding path program 26 times [2022-01-31 18:35:12,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:12,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220363581] [2022-01-31 18:35:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:12,893 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:12,893 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:12,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:12,895 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 18:35:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 18:35:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:35:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:13,335 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:13,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220363581] [2022-01-31 18:35:13,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1220363581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:13,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:13,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:35:13,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883928356] [2022-01-31 18:35:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:13,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:35:13,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:35:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:35:13,336 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:13,945 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2022-01-31 18:35:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:35:13,945 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-01-31 18:35:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:13,946 INFO L225 Difference]: With dead ends: 118 [2022-01-31 18:35:13,946 INFO L226 Difference]: Without dead ends: 90 [2022-01-31 18:35:13,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:35:13,948 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 76 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:13,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 60 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-31 18:35:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-01-31 18:35:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-01-31 18:35:13,959 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 112 [2022-01-31 18:35:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:13,960 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-01-31 18:35:13,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2022-01-31 18:35:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-31 18:35:13,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:13,961 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:13,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 18:35:13,961 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash 992680520, now seen corresponding path program 27 times [2022-01-31 18:35:13,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:13,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34667179] [2022-01-31 18:35:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:13,963 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:13,963 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:13,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:13,965 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 18:35:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 18:35:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:35:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:14,376 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:14,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34667179] [2022-01-31 18:35:14,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [34667179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:14,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:14,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 18:35:14,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066113835] [2022-01-31 18:35:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:14,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 18:35:14,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 18:35:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:35:14,378 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:15,072 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2022-01-31 18:35:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 18:35:15,072 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 114 [2022-01-31 18:35:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:15,073 INFO L225 Difference]: With dead ends: 120 [2022-01-31 18:35:15,073 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 18:35:15,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:35:15,075 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 78 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:15,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 45 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 18:35:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-01-31 18:35:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2022-01-31 18:35:15,086 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 114 [2022-01-31 18:35:15,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:15,086 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2022-01-31 18:35:15,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2022-01-31 18:35:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-31 18:35:15,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:15,087 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:15,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 18:35:15,087 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:15,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1885541878, now seen corresponding path program 28 times [2022-01-31 18:35:15,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:15,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211738373] [2022-01-31 18:35:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:15,090 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:15,090 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:15,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:15,092 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 18:35:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 18:35:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:35:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:15,536 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:15,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211738373] [2022-01-31 18:35:15,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211738373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:15,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:15,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 18:35:15,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813586338] [2022-01-31 18:35:15,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:15,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 18:35:15,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 18:35:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:35:15,538 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:16,206 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2022-01-31 18:35:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:35:16,206 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 116 [2022-01-31 18:35:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:16,207 INFO L225 Difference]: With dead ends: 122 [2022-01-31 18:35:16,207 INFO L226 Difference]: Without dead ends: 94 [2022-01-31 18:35:16,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:35:16,209 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:16,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 65 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:16,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-31 18:35:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2022-01-31 18:35:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-01-31 18:35:16,227 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 116 [2022-01-31 18:35:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:16,227 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-01-31 18:35:16,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-01-31 18:35:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-31 18:35:16,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:16,230 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:16,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 18:35:16,230 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:16,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1898327732, now seen corresponding path program 29 times [2022-01-31 18:35:16,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:16,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562098685] [2022-01-31 18:35:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:16,240 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:16,240 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:16,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:16,242 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 18:35:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 18:35:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:35:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:16,744 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562098685] [2022-01-31 18:35:16,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [562098685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:16,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:16,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 18:35:16,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973924055] [2022-01-31 18:35:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:16,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 18:35:16,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 18:35:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:35:16,746 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:17,305 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2022-01-31 18:35:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 18:35:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 118 [2022-01-31 18:35:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:17,306 INFO L225 Difference]: With dead ends: 124 [2022-01-31 18:35:17,306 INFO L226 Difference]: Without dead ends: 96 [2022-01-31 18:35:17,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:35:17,311 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:17,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 35 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-31 18:35:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2022-01-31 18:35:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2022-01-31 18:35:17,327 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 118 [2022-01-31 18:35:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:17,327 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2022-01-31 18:35:17,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2022-01-31 18:35:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-31 18:35:17,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:17,328 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:17,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 18:35:17,328 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1300631538, now seen corresponding path program 30 times [2022-01-31 18:35:17,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:17,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681472791] [2022-01-31 18:35:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:17,331 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:17,331 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:17,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:17,333 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 18:35:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 18:35:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:35:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:17,796 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681472791] [2022-01-31 18:35:17,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1681472791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:17,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:17,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:35:17,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332344703] [2022-01-31 18:35:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:17,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:35:17,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:35:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:35:17,798 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:18,439 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2022-01-31 18:35:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 18:35:18,439 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-01-31 18:35:18,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:18,440 INFO L225 Difference]: With dead ends: 126 [2022-01-31 18:35:18,440 INFO L226 Difference]: Without dead ends: 98 [2022-01-31 18:35:18,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:35:18,442 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:18,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 60 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-31 18:35:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-01-31 18:35:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2022-01-31 18:35:18,454 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 120 [2022-01-31 18:35:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:18,455 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2022-01-31 18:35:18,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2022-01-31 18:35:18,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-31 18:35:18,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:18,456 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:18,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 18:35:18,456 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:18,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:18,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1854760528, now seen corresponding path program 31 times [2022-01-31 18:35:18,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:18,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285596051] [2022-01-31 18:35:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:18,458 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:18,458 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:18,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:18,460 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 18:35:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 18:35:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:35:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:18,970 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285596051] [2022-01-31 18:35:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [285596051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:18,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:18,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:35:18,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697084938] [2022-01-31 18:35:18,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:18,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:35:18,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:18,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:35:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:35:18,972 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 34 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:19,587 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2022-01-31 18:35:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 18:35:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 34 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2022-01-31 18:35:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:19,588 INFO L225 Difference]: With dead ends: 128 [2022-01-31 18:35:19,588 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 18:35:19,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:35:19,589 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 86 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:19,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 50 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 18:35:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-01-31 18:35:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2022-01-31 18:35:19,603 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 122 [2022-01-31 18:35:19,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:19,603 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2022-01-31 18:35:19,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 34 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2022-01-31 18:35:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-31 18:35:19,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:19,604 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:19,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 18:35:19,604 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1939624978, now seen corresponding path program 32 times [2022-01-31 18:35:19,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:19,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179688829] [2022-01-31 18:35:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:19,606 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:19,606 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:19,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:19,608 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 18:35:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 18:35:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:35:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:20,116 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:20,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179688829] [2022-01-31 18:35:20,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [179688829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:20,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:20,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:35:20,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388252734] [2022-01-31 18:35:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:20,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:35:20,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:35:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:35:20,118 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 36 states, 36 states have (on average 2.361111111111111) internal successors, (85), 35 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:20,913 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2022-01-31 18:35:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:35:20,914 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.361111111111111) internal successors, (85), 35 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-01-31 18:35:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:20,914 INFO L225 Difference]: With dead ends: 130 [2022-01-31 18:35:20,915 INFO L226 Difference]: Without dead ends: 102 [2022-01-31 18:35:20,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 18:35:20,916 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:20,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 45 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-31 18:35:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2022-01-31 18:35:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2022-01-31 18:35:20,957 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 124 [2022-01-31 18:35:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:20,957 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2022-01-31 18:35:20,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.361111111111111) internal successors, (85), 35 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2022-01-31 18:35:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 18:35:20,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:20,958 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:20,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 18:35:20,958 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:20,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1889982804, now seen corresponding path program 33 times [2022-01-31 18:35:20,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:20,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545202757] [2022-01-31 18:35:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:20,976 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:20,976 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:20,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:20,979 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 18:35:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 18:35:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:35:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:21,589 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:21,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545202757] [2022-01-31 18:35:21,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1545202757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:21,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:21,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:35:21,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814675313] [2022-01-31 18:35:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:21,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:35:21,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:35:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:35:21,592 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 36 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:22,325 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2022-01-31 18:35:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 18:35:22,326 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 36 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 126 [2022-01-31 18:35:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:22,326 INFO L225 Difference]: With dead ends: 132 [2022-01-31 18:35:22,326 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 18:35:22,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:35:22,328 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 90 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:22,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 60 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 18:35:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-01-31 18:35:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2022-01-31 18:35:22,406 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 126 [2022-01-31 18:35:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:22,406 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2022-01-31 18:35:22,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 36 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2022-01-31 18:35:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-31 18:35:22,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:22,419 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:22,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 18:35:22,419 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1428493846, now seen corresponding path program 34 times [2022-01-31 18:35:22,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:22,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446393147] [2022-01-31 18:35:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:22,422 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:22,422 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:22,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:22,424 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 18:35:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 18:35:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:35:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:23,074 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:23,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446393147] [2022-01-31 18:35:23,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1446393147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:23,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:23,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:35:23,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845502543] [2022-01-31 18:35:23,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:23,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:35:23,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:35:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:35:23,077 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:23,787 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2022-01-31 18:35:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:35:23,787 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 128 [2022-01-31 18:35:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:23,788 INFO L225 Difference]: With dead ends: 134 [2022-01-31 18:35:23,788 INFO L226 Difference]: Without dead ends: 106 [2022-01-31 18:35:23,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:35:23,790 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 92 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:23,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 65 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-31 18:35:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2022-01-31 18:35:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2022-01-31 18:35:23,823 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 128 [2022-01-31 18:35:23,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:23,823 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2022-01-31 18:35:23,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2022-01-31 18:35:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-31 18:35:23,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:23,824 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:23,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 18:35:23,824 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:23,825 INFO L85 PathProgramCache]: Analyzing trace with hash 319236696, now seen corresponding path program 35 times [2022-01-31 18:35:23,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:23,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438691151] [2022-01-31 18:35:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:23,827 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:23,827 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:23,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:23,829 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 18:35:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 18:35:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:24,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:35:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:24,568 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:24,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438691151] [2022-01-31 18:35:24,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [438691151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:24,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:24,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:35:24,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702875356] [2022-01-31 18:35:24,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:24,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:35:24,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:35:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:35:24,570 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 38 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:25,428 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2022-01-31 18:35:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 18:35:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 38 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 130 [2022-01-31 18:35:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:25,429 INFO L225 Difference]: With dead ends: 136 [2022-01-31 18:35:25,429 INFO L226 Difference]: Without dead ends: 108 [2022-01-31 18:35:25,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:35:25,431 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 94 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:25,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 45 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-31 18:35:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-01-31 18:35:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2022-01-31 18:35:25,448 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 130 [2022-01-31 18:35:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:25,448 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2022-01-31 18:35:25,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 38 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2022-01-31 18:35:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-31 18:35:25,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:25,449 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:25,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 18:35:25,449 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash -524995046, now seen corresponding path program 36 times [2022-01-31 18:35:25,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:25,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386523820] [2022-01-31 18:35:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:25,452 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:25,452 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:25,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:25,454 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:26,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 18:35:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 18:35:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:35:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:26,251 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:26,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386523820] [2022-01-31 18:35:26,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1386523820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:26,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:26,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:35:26,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373419785] [2022-01-31 18:35:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:26,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:35:26,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:35:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:35:26,252 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand has 40 states, 40 states have (on average 2.325) internal successors, (93), 39 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:27,095 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2022-01-31 18:35:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:35:27,099 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.325) internal successors, (93), 39 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 132 [2022-01-31 18:35:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:27,112 INFO L225 Difference]: With dead ends: 138 [2022-01-31 18:35:27,112 INFO L226 Difference]: Without dead ends: 110 [2022-01-31 18:35:27,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:35:27,113 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 96 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:27,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 40 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-31 18:35:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-01-31 18:35:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2022-01-31 18:35:27,130 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 132 [2022-01-31 18:35:27,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:27,130 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions. [2022-01-31 18:35:27,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.325) internal successors, (93), 39 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2022-01-31 18:35:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-31 18:35:27,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:27,131 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:27,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 18:35:27,131 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:27,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash -82880164, now seen corresponding path program 37 times [2022-01-31 18:35:27,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:27,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578919313] [2022-01-31 18:35:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:27,134 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:27,134 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:27,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:27,137 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 18:35:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 18:35:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:35:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:28,000 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:28,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578919313] [2022-01-31 18:35:28,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1578919313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:28,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:28,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 18:35:28,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429228474] [2022-01-31 18:35:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 18:35:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 18:35:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:35:28,002 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:28,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:28,966 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2022-01-31 18:35:28,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 18:35:28,966 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2022-01-31 18:35:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:28,967 INFO L225 Difference]: With dead ends: 140 [2022-01-31 18:35:28,967 INFO L226 Difference]: Without dead ends: 112 [2022-01-31 18:35:28,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:35:28,968 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 98 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:28,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 45 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-31 18:35:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2022-01-31 18:35:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 117 transitions. [2022-01-31 18:35:28,984 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 117 transitions. Word has length 134 [2022-01-31 18:35:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:28,984 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 117 transitions. [2022-01-31 18:35:28,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2022-01-31 18:35:28,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-31 18:35:28,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:28,984 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:28,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 18:35:28,985 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:28,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -412240866, now seen corresponding path program 38 times [2022-01-31 18:35:28,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605667638] [2022-01-31 18:35:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:28,987 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:28,987 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:28,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:28,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 18:35:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 18:35:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:35:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:29,633 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:29,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605667638] [2022-01-31 18:35:29,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [605667638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:29,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:29,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:35:29,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890162174] [2022-01-31 18:35:29,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:29,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:35:29,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:35:29,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:35:29,635 INFO L87 Difference]: Start difference. First operand 111 states and 117 transitions. Second operand has 42 states, 42 states have (on average 2.3095238095238093) internal successors, (97), 41 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:30,550 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2022-01-31 18:35:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:35:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.3095238095238093) internal successors, (97), 41 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 136 [2022-01-31 18:35:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:30,551 INFO L225 Difference]: With dead ends: 142 [2022-01-31 18:35:30,551 INFO L226 Difference]: Without dead ends: 114 [2022-01-31 18:35:30,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:35:30,553 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 100 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:30,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 60 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-01-31 18:35:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2022-01-31 18:35:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2022-01-31 18:35:30,570 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 136 [2022-01-31 18:35:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:30,570 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2022-01-31 18:35:30,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.3095238095238093) internal successors, (97), 41 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2022-01-31 18:35:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-31 18:35:30,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:30,571 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:30,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 18:35:30,572 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash 899704416, now seen corresponding path program 39 times [2022-01-31 18:35:30,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:30,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985264582] [2022-01-31 18:35:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:30,574 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:30,575 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:30,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:30,582 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 18:35:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 18:35:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:35:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:31,343 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:31,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985264582] [2022-01-31 18:35:31,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1985264582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:31,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:31,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 18:35:31,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180545815] [2022-01-31 18:35:31,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:31,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 18:35:31,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 18:35:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:35:31,346 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 42 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:32,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:32,233 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-01-31 18:35:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 18:35:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 42 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2022-01-31 18:35:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:32,234 INFO L225 Difference]: With dead ends: 144 [2022-01-31 18:35:32,234 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 18:35:32,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 18:35:32,236 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 102 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:32,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 40 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 18:35:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-01-31 18:35:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2022-01-31 18:35:32,265 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 138 [2022-01-31 18:35:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:32,267 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2022-01-31 18:35:32,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 42 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2022-01-31 18:35:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-31 18:35:32,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:32,270 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:32,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 18:35:32,270 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:32,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1041264606, now seen corresponding path program 40 times [2022-01-31 18:35:32,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:32,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706247955] [2022-01-31 18:35:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:32,273 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:32,274 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:32,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:32,276 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:32,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 18:35:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 18:35:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:35:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:32,974 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:32,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706247955] [2022-01-31 18:35:32,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [706247955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:32,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:32,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 18:35:32,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451371823] [2022-01-31 18:35:32,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:32,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 18:35:32,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 18:35:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 18:35:32,976 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:33,812 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2022-01-31 18:35:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:35:33,813 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2022-01-31 18:35:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:33,813 INFO L225 Difference]: With dead ends: 146 [2022-01-31 18:35:33,813 INFO L226 Difference]: Without dead ends: 118 [2022-01-31 18:35:33,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:35:33,814 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:33,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 55 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-31 18:35:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-01-31 18:35:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2022-01-31 18:35:33,828 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 140 [2022-01-31 18:35:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:33,829 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2022-01-31 18:35:33,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2022-01-31 18:35:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-31 18:35:33,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:33,830 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:33,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 18:35:33,830 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1998279012, now seen corresponding path program 41 times [2022-01-31 18:35:33,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:33,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457721784] [2022-01-31 18:35:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:33,832 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:33,832 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:33,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:33,834 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 18:35:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 18:35:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:35:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:34,626 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:34,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457721784] [2022-01-31 18:35:34,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [457721784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:34,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:34,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 18:35:34,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975759033] [2022-01-31 18:35:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:34,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 18:35:34,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 18:35:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 18:35:34,628 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 45 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 44 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:35,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:35,490 INFO L93 Difference]: Finished difference Result 148 states and 160 transitions. [2022-01-31 18:35:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 18:35:35,491 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 44 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 142 [2022-01-31 18:35:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:35,491 INFO L225 Difference]: With dead ends: 148 [2022-01-31 18:35:35,491 INFO L226 Difference]: Without dead ends: 120 [2022-01-31 18:35:35,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 18:35:35,492 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 106 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:35,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 45 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-01-31 18:35:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-01-31 18:35:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2022-01-31 18:35:35,513 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 142 [2022-01-31 18:35:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:35,513 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2022-01-31 18:35:35,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 44 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2022-01-31 18:35:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-31 18:35:35,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:35,514 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:35,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 18:35:35,514 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1873032666, now seen corresponding path program 42 times [2022-01-31 18:35:35,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:35,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444649731] [2022-01-31 18:35:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:35,517 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:35,517 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:35,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:35,519 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 18:35:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 18:35:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:35:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:36,239 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:36,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444649731] [2022-01-31 18:35:36,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1444649731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:36,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:36,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:35:36,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120761201] [2022-01-31 18:35:36,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:36,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:35:36,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:35:36,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:35:36,241 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 45 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:37,135 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2022-01-31 18:35:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:35:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 45 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 144 [2022-01-31 18:35:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:37,138 INFO L225 Difference]: With dead ends: 150 [2022-01-31 18:35:37,138 INFO L226 Difference]: Without dead ends: 122 [2022-01-31 18:35:37,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 18:35:37,140 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 108 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:37,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 50 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-31 18:35:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-01-31 18:35:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 127 transitions. [2022-01-31 18:35:37,158 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 127 transitions. Word has length 144 [2022-01-31 18:35:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:37,158 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 127 transitions. [2022-01-31 18:35:37,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 45 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 127 transitions. [2022-01-31 18:35:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-31 18:35:37,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:37,159 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:37,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 18:35:37,159 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1533090408, now seen corresponding path program 43 times [2022-01-31 18:35:37,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:37,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386035765] [2022-01-31 18:35:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:37,162 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:37,162 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:37,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:37,165 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 18:35:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 18:35:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 18:35:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:38,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:38,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386035765] [2022-01-31 18:35:38,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1386035765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:38,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:38,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 18:35:38,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885267112] [2022-01-31 18:35:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:38,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 18:35:38,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 18:35:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 18:35:38,033 INFO L87 Difference]: Start difference. First operand 121 states and 127 transitions. Second operand has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 46 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:38,945 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2022-01-31 18:35:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:35:38,946 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 46 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 146 [2022-01-31 18:35:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:38,946 INFO L225 Difference]: With dead ends: 152 [2022-01-31 18:35:38,946 INFO L226 Difference]: Without dead ends: 124 [2022-01-31 18:35:38,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:35:38,948 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 110 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:38,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 45 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-31 18:35:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2022-01-31 18:35:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2022-01-31 18:35:38,963 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 146 [2022-01-31 18:35:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:38,963 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2022-01-31 18:35:38,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 46 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2022-01-31 18:35:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-31 18:35:38,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:38,965 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:38,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 18:35:38,965 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2052284970, now seen corresponding path program 44 times [2022-01-31 18:35:38,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:38,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401266087] [2022-01-31 18:35:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:38,968 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:38,968 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:38,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:38,970 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 18:35:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 18:35:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 18:35:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:39,795 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:39,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401266087] [2022-01-31 18:35:39,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1401266087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:39,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:39,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 18:35:39,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613581596] [2022-01-31 18:35:39,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:39,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 18:35:39,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 18:35:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:35:39,798 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:40,787 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2022-01-31 18:35:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:35:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 148 [2022-01-31 18:35:40,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:40,788 INFO L225 Difference]: With dead ends: 154 [2022-01-31 18:35:40,788 INFO L226 Difference]: Without dead ends: 126 [2022-01-31 18:35:40,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:35:40,789 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:40,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 60 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-31 18:35:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2022-01-31 18:35:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2022-01-31 18:35:40,812 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 148 [2022-01-31 18:35:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:40,813 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2022-01-31 18:35:40,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:40,813 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2022-01-31 18:35:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-31 18:35:40,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:40,814 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:40,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 18:35:40,814 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:40,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:40,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1512914580, now seen corresponding path program 45 times [2022-01-31 18:35:40,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:40,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752708367] [2022-01-31 18:35:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:40,821 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:40,821 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:40,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:40,824 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:41,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 18:35:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 18:35:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 18:35:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:41,822 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:41,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752708367] [2022-01-31 18:35:41,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [752708367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:41,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:41,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:35:41,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587014908] [2022-01-31 18:35:41,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:41,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:35:41,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:41,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:35:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:35:41,824 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 48 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:43,006 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2022-01-31 18:35:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:35:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 48 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 150 [2022-01-31 18:35:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:43,009 INFO L225 Difference]: With dead ends: 156 [2022-01-31 18:35:43,009 INFO L226 Difference]: Without dead ends: 128 [2022-01-31 18:35:43,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 18:35:43,024 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 114 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:43,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 50 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-01-31 18:35:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2022-01-31 18:35:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2022-01-31 18:35:43,076 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 150 [2022-01-31 18:35:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:43,076 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2022-01-31 18:35:43,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 48 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2022-01-31 18:35:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-31 18:35:43,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:43,077 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:43,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 18:35:43,077 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -285779922, now seen corresponding path program 46 times [2022-01-31 18:35:43,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:43,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843700048] [2022-01-31 18:35:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:43,080 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:43,080 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:43,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:43,083 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 18:35:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 18:35:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 18:35:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:43,975 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:43,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843700048] [2022-01-31 18:35:43,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1843700048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:43,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:43,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 18:35:43,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145110301] [2022-01-31 18:35:43,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:43,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 18:35:43,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 18:35:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 18:35:43,976 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:45,086 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2022-01-31 18:35:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:35:45,087 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 152 [2022-01-31 18:35:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:45,088 INFO L225 Difference]: With dead ends: 158 [2022-01-31 18:35:45,088 INFO L226 Difference]: Without dead ends: 130 [2022-01-31 18:35:45,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:35:45,091 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:45,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 55 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-31 18:35:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-01-31 18:35:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2022-01-31 18:35:45,113 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 152 [2022-01-31 18:35:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:45,114 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2022-01-31 18:35:45,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2022-01-31 18:35:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-31 18:35:45,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:45,115 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:45,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 18:35:45,115 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2125379984, now seen corresponding path program 47 times [2022-01-31 18:35:45,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:45,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891968592] [2022-01-31 18:35:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:45,133 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:45,133 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:45,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:45,150 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 18:35:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 18:35:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 18:35:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:46,374 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:46,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891968592] [2022-01-31 18:35:46,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [891968592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:46,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:46,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 18:35:46,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914578270] [2022-01-31 18:35:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:46,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 18:35:46,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 18:35:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:35:46,376 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 50 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:47,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:47,463 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2022-01-31 18:35:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 18:35:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 50 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 154 [2022-01-31 18:35:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:47,464 INFO L225 Difference]: With dead ends: 160 [2022-01-31 18:35:47,464 INFO L226 Difference]: Without dead ends: 132 [2022-01-31 18:35:47,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 18:35:47,465 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 118 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:47,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 50 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-31 18:35:47,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2022-01-31 18:35:47,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2022-01-31 18:35:47,488 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 154 [2022-01-31 18:35:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:47,489 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2022-01-31 18:35:47,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 50 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2022-01-31 18:35:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-31 18:35:47,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:47,490 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:47,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 18:35:47,490 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:47,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash -454513614, now seen corresponding path program 48 times [2022-01-31 18:35:47,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:47,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475784888] [2022-01-31 18:35:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:47,492 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:47,492 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:47,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:47,496 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 18:35:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 18:35:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 18:35:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:48,565 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:48,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475784888] [2022-01-31 18:35:48,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [475784888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:48,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:48,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:35:48,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395457984] [2022-01-31 18:35:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:48,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:35:48,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:48,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:35:48,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:35:48,567 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand has 52 states, 52 states have (on average 2.25) internal successors, (117), 51 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:49,684 INFO L93 Difference]: Finished difference Result 162 states and 174 transitions. [2022-01-31 18:35:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:35:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.25) internal successors, (117), 51 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 156 [2022-01-31 18:35:49,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:49,685 INFO L225 Difference]: With dead ends: 162 [2022-01-31 18:35:49,685 INFO L226 Difference]: Without dead ends: 134 [2022-01-31 18:35:49,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:35:49,687 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 120 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:49,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 40 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-31 18:35:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-01-31 18:35:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 139 transitions. [2022-01-31 18:35:49,708 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 139 transitions. Word has length 156 [2022-01-31 18:35:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:49,708 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 139 transitions. [2022-01-31 18:35:49,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.25) internal successors, (117), 51 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 139 transitions. [2022-01-31 18:35:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-31 18:35:49,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:49,709 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:49,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 18:35:49,709 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1069700748, now seen corresponding path program 49 times [2022-01-31 18:35:49,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:49,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843247932] [2022-01-31 18:35:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:49,712 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:49,712 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:49,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:49,715 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 18:35:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 18:35:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 18:35:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:50,634 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:50,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843247932] [2022-01-31 18:35:50,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [843247932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:50,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:50,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:35:50,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039597611] [2022-01-31 18:35:50,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:50,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:35:50,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:35:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:35:50,636 INFO L87 Difference]: Start difference. First operand 133 states and 139 transitions. Second operand has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:51,775 INFO L93 Difference]: Finished difference Result 164 states and 176 transitions. [2022-01-31 18:35:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:35:51,775 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 158 [2022-01-31 18:35:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:51,776 INFO L225 Difference]: With dead ends: 164 [2022-01-31 18:35:51,776 INFO L226 Difference]: Without dead ends: 136 [2022-01-31 18:35:51,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:35:51,777 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 122 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:51,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 55 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-31 18:35:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-01-31 18:35:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2022-01-31 18:35:51,804 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 158 [2022-01-31 18:35:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:51,804 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2022-01-31 18:35:51,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2022-01-31 18:35:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-31 18:35:51,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:51,805 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:51,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 18:35:51,806 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 440950326, now seen corresponding path program 50 times [2022-01-31 18:35:51,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520611389] [2022-01-31 18:35:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:51,808 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:51,808 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:51,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:51,811 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 18:35:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 18:35:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 18:35:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:52,788 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:52,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520611389] [2022-01-31 18:35:52,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [520611389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:52,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:52,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:35:52,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103749274] [2022-01-31 18:35:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:52,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:35:52,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:35:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:35:52,790 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:54,031 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2022-01-31 18:35:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:35:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 160 [2022-01-31 18:35:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:54,032 INFO L225 Difference]: With dead ends: 166 [2022-01-31 18:35:54,032 INFO L226 Difference]: Without dead ends: 138 [2022-01-31 18:35:54,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 18:35:54,035 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 124 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:54,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 45 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:35:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-31 18:35:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-01-31 18:35:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2022-01-31 18:35:54,088 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 160 [2022-01-31 18:35:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:54,088 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2022-01-31 18:35:54,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2022-01-31 18:35:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-31 18:35:54,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:54,090 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:54,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 18:35:54,090 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:54,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash 477686392, now seen corresponding path program 51 times [2022-01-31 18:35:54,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:54,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692683874] [2022-01-31 18:35:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:54,092 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:54,092 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:54,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:54,095 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 18:35:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 18:35:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:55,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 18:35:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:55,323 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:55,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692683874] [2022-01-31 18:35:55,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1692683874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:55,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:55,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:35:55,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475218169] [2022-01-31 18:35:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:55,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:35:55,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:35:55,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:35:55,325 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:56,662 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2022-01-31 18:35:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 18:35:56,663 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 162 [2022-01-31 18:35:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:56,663 INFO L225 Difference]: With dead ends: 168 [2022-01-31 18:35:56,663 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 18:35:56,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 18:35:56,665 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 126 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:56,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 60 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 18:35:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2022-01-31 18:35:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 131 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2022-01-31 18:35:56,688 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 162 [2022-01-31 18:35:56,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:56,688 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2022-01-31 18:35:56,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2022-01-31 18:35:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-31 18:35:56,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:56,690 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:56,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 18:35:56,690 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:56,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1421307450, now seen corresponding path program 52 times [2022-01-31 18:35:56,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:56,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126837509] [2022-01-31 18:35:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:56,692 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:56,692 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:56,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:56,695 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:35:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 18:35:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 18:35:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 18:35:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:35:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:35:57,855 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:35:57,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126837509] [2022-01-31 18:35:57,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2126837509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:35:57,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:35:57,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:35:57,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002692672] [2022-01-31 18:35:57,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:35:57,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:35:57,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:35:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:35:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:35:57,857 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand has 56 states, 56 states have (on average 2.232142857142857) internal successors, (125), 55 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:35:59,331 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2022-01-31 18:35:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:35:59,331 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.232142857142857) internal successors, (125), 55 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2022-01-31 18:35:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:35:59,332 INFO L225 Difference]: With dead ends: 170 [2022-01-31 18:35:59,332 INFO L226 Difference]: Without dead ends: 142 [2022-01-31 18:35:59,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:35:59,334 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 128 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:35:59,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 60 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:35:59,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-01-31 18:35:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2022-01-31 18:35:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 133 states have (on average 1.037593984962406) internal successors, (138), 133 states have internal predecessors, (138), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:35:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 147 transitions. [2022-01-31 18:35:59,354 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 147 transitions. Word has length 164 [2022-01-31 18:35:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:35:59,354 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 147 transitions. [2022-01-31 18:35:59,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.232142857142857) internal successors, (125), 55 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:35:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 147 transitions. [2022-01-31 18:35:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-31 18:35:59,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:35:59,355 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:35:59,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 18:35:59,355 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:35:59,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:35:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2003044732, now seen corresponding path program 53 times [2022-01-31 18:35:59,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:35:59,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491166297] [2022-01-31 18:35:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:35:59,358 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:35:59,358 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:35:59,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:35:59,361 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:35:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 18:36:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 18:36:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 18:36:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:00,514 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:00,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491166297] [2022-01-31 18:36:00,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [491166297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:00,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:00,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:36:00,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561590576] [2022-01-31 18:36:00,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:00,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:36:00,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:36:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:36:00,516 INFO L87 Difference]: Start difference. First operand 141 states and 147 transitions. Second operand has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 56 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:02,004 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2022-01-31 18:36:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 18:36:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 56 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 166 [2022-01-31 18:36:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:02,005 INFO L225 Difference]: With dead ends: 172 [2022-01-31 18:36:02,005 INFO L226 Difference]: Without dead ends: 144 [2022-01-31 18:36:02,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 18:36:02,006 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 130 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:02,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 50 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-01-31 18:36:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2022-01-31 18:36:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 135 states have (on average 1.037037037037037) internal successors, (140), 135 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 149 transitions. [2022-01-31 18:36:02,026 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 149 transitions. Word has length 166 [2022-01-31 18:36:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:02,026 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 149 transitions. [2022-01-31 18:36:02,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 56 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 149 transitions. [2022-01-31 18:36:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-31 18:36:02,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:02,027 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:02,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 18:36:02,027 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:02,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:02,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1588143042, now seen corresponding path program 54 times [2022-01-31 18:36:02,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:02,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418893451] [2022-01-31 18:36:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:02,030 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:02,030 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:02,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:02,033 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 18:36:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 18:36:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 18:36:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:03,255 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:03,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418893451] [2022-01-31 18:36:03,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1418893451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:03,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:03,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:36:03,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525561684] [2022-01-31 18:36:03,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:03,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:36:03,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:03,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:36:03,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:36:03,257 INFO L87 Difference]: Start difference. First operand 143 states and 149 transitions. Second operand has 58 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 57 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:04,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:04,656 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2022-01-31 18:36:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:36:04,657 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 57 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 168 [2022-01-31 18:36:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:04,659 INFO L225 Difference]: With dead ends: 174 [2022-01-31 18:36:04,659 INFO L226 Difference]: Without dead ends: 146 [2022-01-31 18:36:04,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:36:04,662 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 132 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:04,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 60 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-01-31 18:36:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2022-01-31 18:36:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 137 states have (on average 1.0364963503649636) internal successors, (142), 137 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 151 transitions. [2022-01-31 18:36:04,691 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 151 transitions. Word has length 168 [2022-01-31 18:36:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:04,691 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 151 transitions. [2022-01-31 18:36:04,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 57 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 151 transitions. [2022-01-31 18:36:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-31 18:36:04,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:04,692 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:04,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 18:36:04,692 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:04,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:04,692 INFO L85 PathProgramCache]: Analyzing trace with hash 434112128, now seen corresponding path program 55 times [2022-01-31 18:36:04,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:04,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877782646] [2022-01-31 18:36:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:04,694 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:04,694 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:04,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:04,698 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:05,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 18:36:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 18:36:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 18:36:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:05,872 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:05,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877782646] [2022-01-31 18:36:05,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1877782646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:05,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:05,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:36:05,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141918877] [2022-01-31 18:36:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:05,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:36:05,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:05,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:36:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:36:05,874 INFO L87 Difference]: Start difference. First operand 145 states and 151 transitions. Second operand has 59 states, 59 states have (on average 2.2203389830508473) internal successors, (131), 58 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:07,382 INFO L93 Difference]: Finished difference Result 176 states and 188 transitions. [2022-01-31 18:36:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:36:07,383 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2203389830508473) internal successors, (131), 58 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 170 [2022-01-31 18:36:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:07,383 INFO L225 Difference]: With dead ends: 176 [2022-01-31 18:36:07,383 INFO L226 Difference]: Without dead ends: 148 [2022-01-31 18:36:07,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:36:07,385 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 134 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:07,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 55 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-31 18:36:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2022-01-31 18:36:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 139 states have (on average 1.0359712230215827) internal successors, (144), 139 states have internal predecessors, (144), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2022-01-31 18:36:07,413 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 170 [2022-01-31 18:36:07,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:07,413 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2022-01-31 18:36:07,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2203389830508473) internal successors, (131), 58 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:07,413 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2022-01-31 18:36:07,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-31 18:36:07,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:07,414 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:07,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 18:36:07,414 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:07,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1798854590, now seen corresponding path program 56 times [2022-01-31 18:36:07,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:07,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723509206] [2022-01-31 18:36:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:07,416 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:07,416 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:07,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:07,423 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 18:36:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 18:36:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 18:36:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:08,594 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:08,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723509206] [2022-01-31 18:36:08,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [723509206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:08,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:08,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:36:08,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200282767] [2022-01-31 18:36:08,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:08,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:36:08,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:36:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:36:08,596 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:10,057 INFO L93 Difference]: Finished difference Result 178 states and 190 transitions. [2022-01-31 18:36:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:36:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2022-01-31 18:36:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:10,059 INFO L225 Difference]: With dead ends: 178 [2022-01-31 18:36:10,059 INFO L226 Difference]: Without dead ends: 150 [2022-01-31 18:36:10,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:36:10,061 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 136 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:10,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 40 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-01-31 18:36:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2022-01-31 18:36:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 141 states have internal predecessors, (146), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2022-01-31 18:36:10,089 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 172 [2022-01-31 18:36:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:10,089 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2022-01-31 18:36:10,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2022-01-31 18:36:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 18:36:10,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:10,090 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:10,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 18:36:10,091 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:10,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:10,091 INFO L85 PathProgramCache]: Analyzing trace with hash -196222588, now seen corresponding path program 57 times [2022-01-31 18:36:10,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:10,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240409602] [2022-01-31 18:36:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:10,093 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:10,093 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:10,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:10,096 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 18:36:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 18:36:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 18:36:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:11,339 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:11,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240409602] [2022-01-31 18:36:11,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [240409602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:11,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:11,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:36:11,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728536794] [2022-01-31 18:36:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:11,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:36:11,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:36:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:36:11,342 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 61 states, 61 states have (on average 2.2131147540983607) internal successors, (135), 60 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:12,847 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2022-01-31 18:36:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:36:12,847 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.2131147540983607) internal successors, (135), 60 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-01-31 18:36:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:12,848 INFO L225 Difference]: With dead ends: 180 [2022-01-31 18:36:12,848 INFO L226 Difference]: Without dead ends: 152 [2022-01-31 18:36:12,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 18:36:12,850 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 138 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:12,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 70 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-31 18:36:12,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-01-31 18:36:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 143 states have (on average 1.034965034965035) internal successors, (148), 143 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 157 transitions. [2022-01-31 18:36:12,872 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 157 transitions. Word has length 174 [2022-01-31 18:36:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:12,872 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 157 transitions. [2022-01-31 18:36:12,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.2131147540983607) internal successors, (135), 60 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 157 transitions. [2022-01-31 18:36:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-31 18:36:12,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:12,874 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:12,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 18:36:12,874 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1960127930, now seen corresponding path program 58 times [2022-01-31 18:36:12,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:12,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262118949] [2022-01-31 18:36:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:12,875 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:12,875 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:12,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:12,879 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 18:36:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 18:36:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 18:36:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:14,194 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:14,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262118949] [2022-01-31 18:36:14,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [262118949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:14,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:14,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:36:14,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180246432] [2022-01-31 18:36:14,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:14,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:36:14,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:36:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:36:14,196 INFO L87 Difference]: Start difference. First operand 151 states and 157 transitions. Second operand has 62 states, 62 states have (on average 2.2096774193548385) internal successors, (137), 61 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:16,331 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2022-01-31 18:36:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:36:16,331 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.2096774193548385) internal successors, (137), 61 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-01-31 18:36:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:16,332 INFO L225 Difference]: With dead ends: 182 [2022-01-31 18:36:16,332 INFO L226 Difference]: Without dead ends: 154 [2022-01-31 18:36:16,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:36:16,334 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 140 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:16,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 65 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:16,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-31 18:36:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-01-31 18:36:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 145 states have (on average 1.0344827586206897) internal successors, (150), 145 states have internal predecessors, (150), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2022-01-31 18:36:16,378 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 176 [2022-01-31 18:36:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:16,378 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2022-01-31 18:36:16,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.2096774193548385) internal successors, (137), 61 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2022-01-31 18:36:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-31 18:36:16,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:16,379 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:16,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 18:36:16,386 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:16,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:16,386 INFO L85 PathProgramCache]: Analyzing trace with hash -561079672, now seen corresponding path program 59 times [2022-01-31 18:36:16,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:16,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297109718] [2022-01-31 18:36:16,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:16,399 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:16,399 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:16,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:16,409 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 18:36:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 18:36:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 18:36:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:17,880 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:17,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297109718] [2022-01-31 18:36:17,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1297109718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:17,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:17,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:36:17,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054012583] [2022-01-31 18:36:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:17,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:36:17,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:36:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:36:17,882 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand has 63 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 62 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:19,712 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2022-01-31 18:36:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 18:36:19,713 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 62 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 178 [2022-01-31 18:36:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:19,714 INFO L225 Difference]: With dead ends: 183 [2022-01-31 18:36:19,714 INFO L226 Difference]: Without dead ends: 155 [2022-01-31 18:36:19,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 18:36:19,717 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 141 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:19,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 40 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-01-31 18:36:19,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-01-31 18:36:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 147 states have (on average 1.034013605442177) internal successors, (152), 147 states have internal predecessors, (152), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 161 transitions. [2022-01-31 18:36:19,818 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 161 transitions. Word has length 178 [2022-01-31 18:36:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:19,818 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 161 transitions. [2022-01-31 18:36:19,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 62 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 161 transitions. [2022-01-31 18:36:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-31 18:36:19,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:19,819 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:19,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 18:36:19,820 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash -400467382, now seen corresponding path program 60 times [2022-01-31 18:36:19,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:19,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98482864] [2022-01-31 18:36:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:19,822 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:19,822 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:19,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:19,826 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 18:36:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 18:36:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-31 18:36:19,924 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:19,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98482864] [2022-01-31 18:36:19,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [98482864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:19,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:19,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:36:19,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187170342] [2022-01-31 18:36:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:19,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:36:19,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:36:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:36:19,929 INFO L87 Difference]: Start difference. First operand 155 states and 161 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:20,034 INFO L93 Difference]: Finished difference Result 189 states and 205 transitions. [2022-01-31 18:36:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:36:20,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-01-31 18:36:20,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:20,037 INFO L225 Difference]: With dead ends: 189 [2022-01-31 18:36:20,037 INFO L226 Difference]: Without dead ends: 162 [2022-01-31 18:36:20,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:36:20,038 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:20,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 39 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-31 18:36:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2022-01-31 18:36:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 151 states have (on average 1.0397350993377483) internal successors, (157), 151 states have internal predecessors, (157), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2022-01-31 18:36:20,122 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 180 [2022-01-31 18:36:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:20,123 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2022-01-31 18:36:20,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:20,123 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2022-01-31 18:36:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-31 18:36:20,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:20,124 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:20,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 18:36:20,124 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1928238299, now seen corresponding path program 61 times [2022-01-31 18:36:20,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:20,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020317700] [2022-01-31 18:36:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:20,128 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:20,128 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:20,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:20,132 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 18:36:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 18:36:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 18:36:20,289 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:20,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020317700] [2022-01-31 18:36:20,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2020317700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:20,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:20,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:36:20,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664104436] [2022-01-31 18:36:20,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:20,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:36:20,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:36:20,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:36:20,291 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:20,400 INFO L93 Difference]: Finished difference Result 197 states and 215 transitions. [2022-01-31 18:36:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:36:20,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 192 [2022-01-31 18:36:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:20,402 INFO L225 Difference]: With dead ends: 197 [2022-01-31 18:36:20,402 INFO L226 Difference]: Without dead ends: 166 [2022-01-31 18:36:20,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:36:20,403 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:20,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 44 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:20,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-01-31 18:36:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2022-01-31 18:36:20,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 155 states have (on average 1.0451612903225806) internal successors, (162), 155 states have internal predecessors, (162), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2022-01-31 18:36:20,477 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 192 [2022-01-31 18:36:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:20,477 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2022-01-31 18:36:20,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2022-01-31 18:36:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-31 18:36:20,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:20,479 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 12, 12, 12, 12, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:20,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 18:36:20,479 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:20,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1196848256, now seen corresponding path program 62 times [2022-01-31 18:36:20,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:20,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705314986] [2022-01-31 18:36:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:20,492 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:20,492 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:20,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:20,497 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 18:36:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 18:36:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-31 18:36:20,604 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:20,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705314986] [2022-01-31 18:36:20,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1705314986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:20,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:20,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:36:20,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372855181] [2022-01-31 18:36:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:20,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:36:20,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:36:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:36:20,606 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:20,750 INFO L93 Difference]: Finished difference Result 205 states and 225 transitions. [2022-01-31 18:36:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:36:20,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 204 [2022-01-31 18:36:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:20,751 INFO L225 Difference]: With dead ends: 205 [2022-01-31 18:36:20,751 INFO L226 Difference]: Without dead ends: 170 [2022-01-31 18:36:20,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:36:20,752 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 65 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:20,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 39 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-31 18:36:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2022-01-31 18:36:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 159 states have (on average 1.050314465408805) internal successors, (167), 159 states have internal predecessors, (167), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2022-01-31 18:36:20,787 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 204 [2022-01-31 18:36:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:20,789 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2022-01-31 18:36:20,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2022-01-31 18:36:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-31 18:36:20,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:20,790 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 15, 15, 15, 15, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:20,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 18:36:20,790 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1773763419, now seen corresponding path program 63 times [2022-01-31 18:36:20,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542716650] [2022-01-31 18:36:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:20,792 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:20,792 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:20,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:20,796 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 18:36:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 18:36:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 18:36:20,950 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:20,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542716650] [2022-01-31 18:36:20,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [542716650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:20,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:20,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:36:20,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705338981] [2022-01-31 18:36:20,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:20,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:36:20,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:20,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:36:20,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:36:20,952 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:21,096 INFO L93 Difference]: Finished difference Result 213 states and 235 transitions. [2022-01-31 18:36:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:36:21,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 216 [2022-01-31 18:36:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:21,097 INFO L225 Difference]: With dead ends: 213 [2022-01-31 18:36:21,097 INFO L226 Difference]: Without dead ends: 174 [2022-01-31 18:36:21,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:36:21,098 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 73 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:21,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 44 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:21,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-31 18:36:21,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2022-01-31 18:36:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 163 states have (on average 1.0552147239263803) internal successors, (172), 163 states have internal predecessors, (172), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 181 transitions. [2022-01-31 18:36:21,234 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 181 transitions. Word has length 216 [2022-01-31 18:36:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:21,235 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 181 transitions. [2022-01-31 18:36:21,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 181 transitions. [2022-01-31 18:36:21,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-31 18:36:21,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:21,236 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:21,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 18:36:21,236 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1559296694, now seen corresponding path program 64 times [2022-01-31 18:36:21,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:21,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897505409] [2022-01-31 18:36:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:21,239 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:21,239 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:21,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:21,243 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 18:36:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 18:36:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-31 18:36:21,518 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:21,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897505409] [2022-01-31 18:36:21,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [897505409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:21,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:21,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:36:21,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723472197] [2022-01-31 18:36:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:21,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:36:21,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:36:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:36:21,520 INFO L87 Difference]: Start difference. First operand 171 states and 181 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:21,664 INFO L93 Difference]: Finished difference Result 221 states and 245 transitions. [2022-01-31 18:36:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:36:21,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 228 [2022-01-31 18:36:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:21,667 INFO L225 Difference]: With dead ends: 221 [2022-01-31 18:36:21,667 INFO L226 Difference]: Without dead ends: 178 [2022-01-31 18:36:21,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:36:21,669 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 86 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:21,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 39 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-31 18:36:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2022-01-31 18:36:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 167 states have (on average 1.0598802395209581) internal successors, (177), 167 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 186 transitions. [2022-01-31 18:36:21,739 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 186 transitions. Word has length 228 [2022-01-31 18:36:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:21,739 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 186 transitions. [2022-01-31 18:36:21,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 186 transitions. [2022-01-31 18:36:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-01-31 18:36:21,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:21,740 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 21, 21, 21, 21, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:21,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 18:36:21,741 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:21,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2095040913, now seen corresponding path program 65 times [2022-01-31 18:36:21,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:21,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875557672] [2022-01-31 18:36:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:21,743 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:21,743 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:21,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:21,747 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 18:36:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 18:36:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-31 18:36:21,960 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:21,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875557672] [2022-01-31 18:36:21,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1875557672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:21,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:21,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:36:21,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667169745] [2022-01-31 18:36:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:21,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:36:21,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:36:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:36:21,961 INFO L87 Difference]: Start difference. First operand 175 states and 186 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:22,166 INFO L93 Difference]: Finished difference Result 229 states and 255 transitions. [2022-01-31 18:36:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:36:22,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 240 [2022-01-31 18:36:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:22,167 INFO L225 Difference]: With dead ends: 229 [2022-01-31 18:36:22,168 INFO L226 Difference]: Without dead ends: 182 [2022-01-31 18:36:22,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:36:22,168 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 96 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:22,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 39 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-31 18:36:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2022-01-31 18:36:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 171 states have (on average 1.064327485380117) internal successors, (182), 171 states have internal predecessors, (182), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2022-01-31 18:36:22,219 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 240 [2022-01-31 18:36:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:22,219 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2022-01-31 18:36:22,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2022-01-31 18:36:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-31 18:36:22,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:22,221 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 24, 24, 24, 24, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:22,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 18:36:22,221 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1375053804, now seen corresponding path program 66 times [2022-01-31 18:36:22,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:22,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822999048] [2022-01-31 18:36:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:22,223 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:22,223 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:22,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:22,227 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 18:36:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 18:36:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-31 18:36:22,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822999048] [2022-01-31 18:36:22,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1822999048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:22,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:22,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:36:22,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060485734] [2022-01-31 18:36:22,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:22,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:36:22,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:36:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:36:22,399 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:22,606 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2022-01-31 18:36:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:36:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 252 [2022-01-31 18:36:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:22,607 INFO L225 Difference]: With dead ends: 237 [2022-01-31 18:36:22,607 INFO L226 Difference]: Without dead ends: 186 [2022-01-31 18:36:22,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:36:22,607 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 105 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:22,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 44 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-31 18:36:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2022-01-31 18:36:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 175 states have (on average 1.0685714285714285) internal successors, (187), 175 states have internal predecessors, (187), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 196 transitions. [2022-01-31 18:36:22,636 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 196 transitions. Word has length 252 [2022-01-31 18:36:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:22,636 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 196 transitions. [2022-01-31 18:36:22,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 196 transitions. [2022-01-31 18:36:22,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-31 18:36:22,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:22,637 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 27, 27, 27, 27, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:22,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 18:36:22,638 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1921144263, now seen corresponding path program 67 times [2022-01-31 18:36:22,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:22,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10025549] [2022-01-31 18:36:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:22,639 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:22,639 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:22,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:22,642 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 18:36:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 18:36:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-31 18:36:22,815 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:22,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10025549] [2022-01-31 18:36:22,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [10025549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:22,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:22,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:36:22,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415634005] [2022-01-31 18:36:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:22,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:36:22,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:36:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:36:22,817 INFO L87 Difference]: Start difference. First operand 183 states and 196 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:23,078 INFO L93 Difference]: Finished difference Result 245 states and 275 transitions. [2022-01-31 18:36:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:36:23,078 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 264 [2022-01-31 18:36:23,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:23,079 INFO L225 Difference]: With dead ends: 245 [2022-01-31 18:36:23,080 INFO L226 Difference]: Without dead ends: 190 [2022-01-31 18:36:23,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:36:23,080 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 113 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:23,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 44 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-31 18:36:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2022-01-31 18:36:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 179 states have (on average 1.0726256983240223) internal successors, (192), 179 states have internal predecessors, (192), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2022-01-31 18:36:23,122 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 264 [2022-01-31 18:36:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:23,122 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2022-01-31 18:36:23,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2022-01-31 18:36:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-31 18:36:23,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:23,125 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 30, 30, 30, 30, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:23,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 18:36:23,126 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash -222981342, now seen corresponding path program 68 times [2022-01-31 18:36:23,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156831652] [2022-01-31 18:36:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:23,128 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:23,129 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:23,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:23,133 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 18:36:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 18:36:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-31 18:36:23,322 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:23,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156831652] [2022-01-31 18:36:23,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [156831652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:23,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:23,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 18:36:23,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424667407] [2022-01-31 18:36:23,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:23,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 18:36:23,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 18:36:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 18:36:23,323 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:23,532 INFO L93 Difference]: Finished difference Result 253 states and 285 transitions. [2022-01-31 18:36:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 18:36:23,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 276 [2022-01-31 18:36:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:23,536 INFO L225 Difference]: With dead ends: 253 [2022-01-31 18:36:23,536 INFO L226 Difference]: Without dead ends: 194 [2022-01-31 18:36:23,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:36:23,536 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 126 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:23,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 44 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-31 18:36:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-01-31 18:36:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 183 states have (on average 1.0765027322404372) internal successors, (197), 183 states have internal predecessors, (197), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 206 transitions. [2022-01-31 18:36:23,577 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 206 transitions. Word has length 276 [2022-01-31 18:36:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:23,578 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 206 transitions. [2022-01-31 18:36:23,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 206 transitions. [2022-01-31 18:36:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-01-31 18:36:23,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:23,579 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 33, 33, 33, 33, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:23,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 18:36:23,579 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash -727769091, now seen corresponding path program 69 times [2022-01-31 18:36:23,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:23,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737981808] [2022-01-31 18:36:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:23,581 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:23,581 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:23,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:23,586 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 18:36:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 18:36:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-31 18:36:23,775 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:23,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737981808] [2022-01-31 18:36:23,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [737981808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:23,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:23,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 18:36:23,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467145369] [2022-01-31 18:36:23,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:23,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 18:36:23,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:23,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 18:36:23,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:36:23,777 INFO L87 Difference]: Start difference. First operand 191 states and 206 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:24,043 INFO L93 Difference]: Finished difference Result 261 states and 295 transitions. [2022-01-31 18:36:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 18:36:24,043 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 288 [2022-01-31 18:36:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:24,044 INFO L225 Difference]: With dead ends: 261 [2022-01-31 18:36:24,044 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 18:36:24,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:36:24,045 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 129 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:24,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 49 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 18:36:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2022-01-31 18:36:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.0802139037433156) internal successors, (202), 187 states have internal predecessors, (202), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 211 transitions. [2022-01-31 18:36:24,095 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 211 transitions. Word has length 288 [2022-01-31 18:36:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:24,095 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 211 transitions. [2022-01-31 18:36:24,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 14 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 211 transitions. [2022-01-31 18:36:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-31 18:36:24,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:24,097 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 36, 36, 36, 36, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:24,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 18:36:24,097 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:24,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:24,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2016328792, now seen corresponding path program 70 times [2022-01-31 18:36:24,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:24,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151199934] [2022-01-31 18:36:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:24,100 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:24,100 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:24,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:24,104 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 18:36:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 18:36:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-31 18:36:24,300 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:24,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151199934] [2022-01-31 18:36:24,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [151199934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:24,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:24,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 18:36:24,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518079972] [2022-01-31 18:36:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:24,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 18:36:24,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 18:36:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 18:36:24,302 INFO L87 Difference]: Start difference. First operand 195 states and 211 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:24,528 INFO L93 Difference]: Finished difference Result 269 states and 305 transitions. [2022-01-31 18:36:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 18:36:24,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 300 [2022-01-31 18:36:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:24,529 INFO L225 Difference]: With dead ends: 269 [2022-01-31 18:36:24,529 INFO L226 Difference]: Without dead ends: 202 [2022-01-31 18:36:24,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:36:24,529 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 140 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:24,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 49 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-31 18:36:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2022-01-31 18:36:24,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 191 states have (on average 1.0837696335078535) internal successors, (207), 191 states have internal predecessors, (207), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 216 transitions. [2022-01-31 18:36:24,564 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 216 transitions. Word has length 300 [2022-01-31 18:36:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:24,564 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 216 transitions. [2022-01-31 18:36:24,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 216 transitions. [2022-01-31 18:36:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-01-31 18:36:24,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:24,566 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 39, 39, 39, 39, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:24,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 18:36:24,566 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash 187967539, now seen corresponding path program 71 times [2022-01-31 18:36:24,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:24,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109030362] [2022-01-31 18:36:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:24,568 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:24,568 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:24,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:24,573 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 18:36:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 18:36:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-31 18:36:24,783 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:24,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109030362] [2022-01-31 18:36:24,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1109030362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:24,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:24,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 18:36:24,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439914440] [2022-01-31 18:36:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:24,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 18:36:24,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 18:36:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:36:24,784 INFO L87 Difference]: Start difference. First operand 199 states and 216 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:25,022 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2022-01-31 18:36:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 18:36:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 312 [2022-01-31 18:36:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:25,024 INFO L225 Difference]: With dead ends: 277 [2022-01-31 18:36:25,024 INFO L226 Difference]: Without dead ends: 206 [2022-01-31 18:36:25,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:36:25,024 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 153 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:25,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 44 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-31 18:36:25,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2022-01-31 18:36:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 195 states have (on average 1.087179487179487) internal successors, (212), 195 states have internal predecessors, (212), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 221 transitions. [2022-01-31 18:36:25,053 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 221 transitions. Word has length 312 [2022-01-31 18:36:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:25,053 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 221 transitions. [2022-01-31 18:36:25,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 221 transitions. [2022-01-31 18:36:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-31 18:36:25,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:25,055 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 42, 42, 42, 42, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:25,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 18:36:25,055 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:25,055 INFO L85 PathProgramCache]: Analyzing trace with hash -111205490, now seen corresponding path program 72 times [2022-01-31 18:36:25,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:25,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688419580] [2022-01-31 18:36:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:25,057 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:25,057 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:25,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:25,061 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 18:36:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 18:36:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-31 18:36:25,279 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:25,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688419580] [2022-01-31 18:36:25,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1688419580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:25,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:25,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 18:36:25,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362017389] [2022-01-31 18:36:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:25,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 18:36:25,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 18:36:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:36:25,281 INFO L87 Difference]: Start difference. First operand 203 states and 221 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:25,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:25,555 INFO L93 Difference]: Finished difference Result 285 states and 325 transitions. [2022-01-31 18:36:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:36:25,556 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 324 [2022-01-31 18:36:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:25,557 INFO L225 Difference]: With dead ends: 285 [2022-01-31 18:36:25,557 INFO L226 Difference]: Without dead ends: 210 [2022-01-31 18:36:25,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:36:25,558 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 171 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:25,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 39 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-01-31 18:36:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2022-01-31 18:36:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 199 states have (on average 1.0904522613065326) internal successors, (217), 199 states have internal predecessors, (217), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 226 transitions. [2022-01-31 18:36:25,601 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 226 transitions. Word has length 324 [2022-01-31 18:36:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:25,601 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 226 transitions. [2022-01-31 18:36:25,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 226 transitions. [2022-01-31 18:36:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-01-31 18:36:25,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:25,602 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 45, 45, 45, 45, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:25,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 18:36:25,603 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1547660905, now seen corresponding path program 73 times [2022-01-31 18:36:25,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230960833] [2022-01-31 18:36:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:25,605 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:25,605 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:25,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:25,609 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 18:36:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 18:36:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-31 18:36:25,886 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:25,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230960833] [2022-01-31 18:36:25,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1230960833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:25,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:25,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 18:36:25,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003369682] [2022-01-31 18:36:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:25,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 18:36:25,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 18:36:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:36:25,887 INFO L87 Difference]: Start difference. First operand 207 states and 226 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:26,187 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2022-01-31 18:36:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 18:36:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 336 [2022-01-31 18:36:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:26,188 INFO L225 Difference]: With dead ends: 293 [2022-01-31 18:36:26,188 INFO L226 Difference]: Without dead ends: 214 [2022-01-31 18:36:26,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:36:26,189 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 167 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:26,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 54 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-01-31 18:36:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2022-01-31 18:36:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 203 states have (on average 1.0935960591133005) internal successors, (222), 203 states have internal predecessors, (222), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 231 transitions. [2022-01-31 18:36:26,226 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 231 transitions. Word has length 336 [2022-01-31 18:36:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:26,226 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 231 transitions. [2022-01-31 18:36:26,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 231 transitions. [2022-01-31 18:36:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-01-31 18:36:26,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:26,227 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 48, 48, 48, 48, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:26,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 18:36:26,228 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1799669956, now seen corresponding path program 74 times [2022-01-31 18:36:26,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:26,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252599957] [2022-01-31 18:36:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:26,229 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:26,230 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:26,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:26,234 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 18:36:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 18:36:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-31 18:36:26,471 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:26,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252599957] [2022-01-31 18:36:26,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [252599957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:26,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:26,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 18:36:26,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300680840] [2022-01-31 18:36:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:26,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 18:36:26,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 18:36:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 18:36:26,473 INFO L87 Difference]: Start difference. First operand 211 states and 231 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:26,763 INFO L93 Difference]: Finished difference Result 301 states and 345 transitions. [2022-01-31 18:36:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 18:36:26,763 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 348 [2022-01-31 18:36:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:26,764 INFO L225 Difference]: With dead ends: 301 [2022-01-31 18:36:26,764 INFO L226 Difference]: Without dead ends: 218 [2022-01-31 18:36:26,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:36:26,765 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 186 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:26,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 44 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-31 18:36:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2022-01-31 18:36:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 207 states have (on average 1.0966183574879227) internal successors, (227), 207 states have internal predecessors, (227), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 236 transitions. [2022-01-31 18:36:26,810 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 236 transitions. Word has length 348 [2022-01-31 18:36:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:26,811 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 236 transitions. [2022-01-31 18:36:26,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:26,811 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 236 transitions. [2022-01-31 18:36:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-01-31 18:36:26,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:26,812 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 51, 51, 51, 51, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:26,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 18:36:26,813 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:26,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:26,813 INFO L85 PathProgramCache]: Analyzing trace with hash -339807585, now seen corresponding path program 75 times [2022-01-31 18:36:26,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:26,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193489525] [2022-01-31 18:36:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:26,815 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:26,815 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:26,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:26,820 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 18:36:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 18:36:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-31 18:36:27,175 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:27,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193489525] [2022-01-31 18:36:27,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [193489525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:27,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:27,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 18:36:27,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167135621] [2022-01-31 18:36:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:27,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 18:36:27,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:27,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 18:36:27,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:36:27,179 INFO L87 Difference]: Start difference. First operand 215 states and 236 transitions. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:27,575 INFO L93 Difference]: Finished difference Result 309 states and 355 transitions. [2022-01-31 18:36:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 18:36:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 360 [2022-01-31 18:36:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:27,577 INFO L225 Difference]: With dead ends: 309 [2022-01-31 18:36:27,577 INFO L226 Difference]: Without dead ends: 222 [2022-01-31 18:36:27,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:36:27,578 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 216 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:27,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 39 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-01-31 18:36:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2022-01-31 18:36:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 211 states have (on average 1.099526066350711) internal successors, (232), 211 states have internal predecessors, (232), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 241 transitions. [2022-01-31 18:36:27,629 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 241 transitions. Word has length 360 [2022-01-31 18:36:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:27,629 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 241 transitions. [2022-01-31 18:36:27,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:27,630 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 241 transitions. [2022-01-31 18:36:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-01-31 18:36:27,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:27,636 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 54, 54, 54, 54, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:27,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 18:36:27,636 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:27,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1596085254, now seen corresponding path program 76 times [2022-01-31 18:36:27,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:27,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645078369] [2022-01-31 18:36:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:27,643 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:27,643 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:27,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:27,648 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:27,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 18:36:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 18:36:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-01-31 18:36:28,099 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:28,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645078369] [2022-01-31 18:36:28,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1645078369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:28,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:28,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 18:36:28,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891754261] [2022-01-31 18:36:28,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:28,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 18:36:28,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 18:36:28,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:36:28,101 INFO L87 Difference]: Start difference. First operand 219 states and 241 transitions. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 21 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:28,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:28,611 INFO L93 Difference]: Finished difference Result 317 states and 365 transitions. [2022-01-31 18:36:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 18:36:28,611 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 21 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 372 [2022-01-31 18:36:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:28,612 INFO L225 Difference]: With dead ends: 317 [2022-01-31 18:36:28,612 INFO L226 Difference]: Without dead ends: 226 [2022-01-31 18:36:28,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:36:28,613 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 194 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:28,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 59 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-01-31 18:36:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2022-01-31 18:36:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 215 states have (on average 1.1023255813953488) internal successors, (237), 215 states have internal predecessors, (237), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 246 transitions. [2022-01-31 18:36:28,650 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 246 transitions. Word has length 372 [2022-01-31 18:36:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:28,650 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 246 transitions. [2022-01-31 18:36:28,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 21 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 246 transitions. [2022-01-31 18:36:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-01-31 18:36:28,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:28,652 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 57, 57, 57, 57, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:28,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 18:36:28,652 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:28,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1146047275, now seen corresponding path program 77 times [2022-01-31 18:36:28,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:28,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243826137] [2022-01-31 18:36:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:28,655 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:28,655 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:28,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:28,660 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 18:36:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 18:36:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-01-31 18:36:28,994 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243826137] [2022-01-31 18:36:28,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [243826137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:28,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:28,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 18:36:28,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082585566] [2022-01-31 18:36:28,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:28,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 18:36:28,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 18:36:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:36:28,996 INFO L87 Difference]: Start difference. First operand 223 states and 246 transitions. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 22 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:29,347 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2022-01-31 18:36:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 18:36:29,347 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 22 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 384 [2022-01-31 18:36:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:29,349 INFO L225 Difference]: With dead ends: 325 [2022-01-31 18:36:29,349 INFO L226 Difference]: Without dead ends: 230 [2022-01-31 18:36:29,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:36:29,350 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 215 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:29,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 39 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:29,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-01-31 18:36:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2022-01-31 18:36:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 219 states have (on average 1.1050228310502284) internal successors, (242), 219 states have internal predecessors, (242), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2022-01-31 18:36:29,399 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 384 [2022-01-31 18:36:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:29,399 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2022-01-31 18:36:29,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 22 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2022-01-31 18:36:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-01-31 18:36:29,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:29,401 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:29,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 18:36:29,401 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:29,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1260899632, now seen corresponding path program 78 times [2022-01-31 18:36:29,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:29,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389326862] [2022-01-31 18:36:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:29,403 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:29,403 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:29,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:29,408 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 18:36:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 18:36:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-01-31 18:36:29,713 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:29,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389326862] [2022-01-31 18:36:29,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [389326862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:29,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:29,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 18:36:29,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109581063] [2022-01-31 18:36:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:29,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 18:36:29,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 18:36:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 18:36:29,714 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 23 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:30,096 INFO L93 Difference]: Finished difference Result 333 states and 385 transitions. [2022-01-31 18:36:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 18:36:30,097 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 23 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 396 [2022-01-31 18:36:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:30,098 INFO L225 Difference]: With dead ends: 333 [2022-01-31 18:36:30,098 INFO L226 Difference]: Without dead ends: 234 [2022-01-31 18:36:30,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 18:36:30,099 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 218 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:30,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 54 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-31 18:36:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2022-01-31 18:36:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 223 states have (on average 1.1076233183856503) internal successors, (247), 223 states have internal predecessors, (247), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 256 transitions. [2022-01-31 18:36:30,137 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 256 transitions. Word has length 396 [2022-01-31 18:36:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:30,137 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 256 transitions. [2022-01-31 18:36:30,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 23 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 256 transitions. [2022-01-31 18:36:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-01-31 18:36:30,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:30,138 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:30,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 18:36:30,138 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:30,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1408060149, now seen corresponding path program 79 times [2022-01-31 18:36:30,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:30,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092211638] [2022-01-31 18:36:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:30,140 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:30,140 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:30,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:30,144 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 18:36:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 18:36:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-01-31 18:36:30,530 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:30,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092211638] [2022-01-31 18:36:30,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2092211638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:30,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:30,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 18:36:30,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123357580] [2022-01-31 18:36:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:30,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 18:36:30,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 18:36:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:36:30,532 INFO L87 Difference]: Start difference. First operand 231 states and 256 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 24 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:30,937 INFO L93 Difference]: Finished difference Result 341 states and 395 transitions. [2022-01-31 18:36:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 18:36:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 24 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 408 [2022-01-31 18:36:30,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:30,939 INFO L225 Difference]: With dead ends: 341 [2022-01-31 18:36:30,939 INFO L226 Difference]: Without dead ends: 238 [2022-01-31 18:36:30,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 18:36:30,940 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 224 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:30,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 54 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-01-31 18:36:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 235. [2022-01-31 18:36:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 227 states have (on average 1.1101321585903083) internal successors, (252), 227 states have internal predecessors, (252), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 261 transitions. [2022-01-31 18:36:30,976 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 261 transitions. Word has length 408 [2022-01-31 18:36:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:30,976 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 261 transitions. [2022-01-31 18:36:30,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 24 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 261 transitions. [2022-01-31 18:36:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-01-31 18:36:30,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:30,978 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:30,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 18:36:30,978 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:30,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash -115266458, now seen corresponding path program 80 times [2022-01-31 18:36:30,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:30,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540768763] [2022-01-31 18:36:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:30,980 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:30,980 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:30,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:30,984 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 18:36:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 18:36:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-31 18:36:31,354 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:31,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540768763] [2022-01-31 18:36:31,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1540768763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:31,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:31,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 18:36:31,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994044207] [2022-01-31 18:36:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:31,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 18:36:31,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 18:36:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 18:36:31,355 INFO L87 Difference]: Start difference. First operand 235 states and 261 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 25 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:31,781 INFO L93 Difference]: Finished difference Result 349 states and 405 transitions. [2022-01-31 18:36:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:36:31,781 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 25 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 420 [2022-01-31 18:36:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:31,782 INFO L225 Difference]: With dead ends: 349 [2022-01-31 18:36:31,782 INFO L226 Difference]: Without dead ends: 242 [2022-01-31 18:36:31,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:36:31,783 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 258 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:31,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 44 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-31 18:36:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 239. [2022-01-31 18:36:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 231 states have (on average 1.1125541125541125) internal successors, (257), 231 states have internal predecessors, (257), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 266 transitions. [2022-01-31 18:36:31,818 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 266 transitions. Word has length 420 [2022-01-31 18:36:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:31,818 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 266 transitions. [2022-01-31 18:36:31,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 25 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 266 transitions. [2022-01-31 18:36:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-01-31 18:36:31,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:31,820 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:31,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 18:36:31,820 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:31,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2061693761, now seen corresponding path program 81 times [2022-01-31 18:36:31,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:31,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109260020] [2022-01-31 18:36:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:31,822 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:31,822 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:31,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:31,826 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 18:36:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 18:36:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-31 18:36:32,287 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:32,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109260020] [2022-01-31 18:36:32,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1109260020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:32,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:32,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 18:36:32,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116558380] [2022-01-31 18:36:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:32,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 18:36:32,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:32,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 18:36:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:36:32,289 INFO L87 Difference]: Start difference. First operand 239 states and 266 transitions. Second operand has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 26 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:32,776 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2022-01-31 18:36:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 18:36:32,776 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 26 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 432 [2022-01-31 18:36:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:32,778 INFO L225 Difference]: With dead ends: 357 [2022-01-31 18:36:32,778 INFO L226 Difference]: Without dead ends: 246 [2022-01-31 18:36:32,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:36:32,779 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 246 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:32,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 59 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:32,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-01-31 18:36:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2022-01-31 18:36:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 235 states have (on average 1.1148936170212767) internal successors, (262), 235 states have internal predecessors, (262), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 271 transitions. [2022-01-31 18:36:32,845 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 271 transitions. Word has length 432 [2022-01-31 18:36:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:32,845 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 271 transitions. [2022-01-31 18:36:32,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 26 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 271 transitions. [2022-01-31 18:36:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-01-31 18:36:32,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:32,848 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:32,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 18:36:32,848 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash 398969244, now seen corresponding path program 82 times [2022-01-31 18:36:32,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:32,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624827001] [2022-01-31 18:36:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:32,850 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:32,850 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:32,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:32,855 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 18:36:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 18:36:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-01-31 18:36:33,269 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:33,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624827001] [2022-01-31 18:36:33,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1624827001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:33,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:33,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:36:33,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271376971] [2022-01-31 18:36:33,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:33,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:36:33,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:36:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:36:33,270 INFO L87 Difference]: Start difference. First operand 243 states and 271 transitions. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 27 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:33,740 INFO L93 Difference]: Finished difference Result 365 states and 425 transitions. [2022-01-31 18:36:33,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 18:36:33,741 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 27 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 444 [2022-01-31 18:36:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:33,742 INFO L225 Difference]: With dead ends: 365 [2022-01-31 18:36:33,742 INFO L226 Difference]: Without dead ends: 250 [2022-01-31 18:36:33,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:36:33,743 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 270 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:33,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 44 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-31 18:36:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2022-01-31 18:36:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 239 states have (on average 1.1171548117154813) internal successors, (267), 239 states have internal predecessors, (267), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 276 transitions. [2022-01-31 18:36:33,788 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 276 transitions. Word has length 444 [2022-01-31 18:36:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:33,788 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 276 transitions. [2022-01-31 18:36:33,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 27 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2022-01-31 18:36:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-01-31 18:36:33,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:33,790 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:33,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 18:36:33,790 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:33,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1004572809, now seen corresponding path program 83 times [2022-01-31 18:36:33,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:33,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025088090] [2022-01-31 18:36:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:33,792 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:33,792 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:33,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:33,796 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 18:36:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 18:36:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-31 18:36:34,231 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:34,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025088090] [2022-01-31 18:36:34,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2025088090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:34,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:34,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:36:34,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459994889] [2022-01-31 18:36:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:34,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:36:34,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:36:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:36:34,232 INFO L87 Difference]: Start difference. First operand 247 states and 276 transitions. Second operand has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 28 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:34,733 INFO L93 Difference]: Finished difference Result 373 states and 435 transitions. [2022-01-31 18:36:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 18:36:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 28 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 456 [2022-01-31 18:36:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:34,735 INFO L225 Difference]: With dead ends: 373 [2022-01-31 18:36:34,735 INFO L226 Difference]: Without dead ends: 254 [2022-01-31 18:36:34,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:36:34,736 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 286 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:34,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 44 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-31 18:36:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2022-01-31 18:36:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 243 states have (on average 1.1193415637860082) internal successors, (272), 243 states have internal predecessors, (272), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 281 transitions. [2022-01-31 18:36:34,791 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 281 transitions. Word has length 456 [2022-01-31 18:36:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:34,792 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 281 transitions. [2022-01-31 18:36:34,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.379310344827586) internal successors, (127), 28 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 281 transitions. [2022-01-31 18:36:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-01-31 18:36:34,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:34,794 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:34,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 18:36:34,794 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:34,795 INFO L85 PathProgramCache]: Analyzing trace with hash -233200430, now seen corresponding path program 84 times [2022-01-31 18:36:34,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:34,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718391049] [2022-01-31 18:36:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:34,796 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:34,796 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:34,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:34,801 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 18:36:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 18:36:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-31 18:36:35,538 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:35,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718391049] [2022-01-31 18:36:35,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [718391049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:35,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:35,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:36:35,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415312682] [2022-01-31 18:36:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:35,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:36:35,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:35,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:36:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:36:35,540 INFO L87 Difference]: Start difference. First operand 251 states and 281 transitions. Second operand has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:36,205 INFO L93 Difference]: Finished difference Result 381 states and 445 transitions. [2022-01-31 18:36:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:36:36,205 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 468 [2022-01-31 18:36:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:36,207 INFO L225 Difference]: With dead ends: 381 [2022-01-31 18:36:36,207 INFO L226 Difference]: Without dead ends: 258 [2022-01-31 18:36:36,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:36:36,208 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 271 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:36,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 54 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-31 18:36:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2022-01-31 18:36:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 247 states have (on average 1.1214574898785425) internal successors, (277), 247 states have internal predecessors, (277), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 286 transitions. [2022-01-31 18:36:36,264 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 286 transitions. Word has length 468 [2022-01-31 18:36:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:36,265 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 286 transitions. [2022-01-31 18:36:36,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 29 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 286 transitions. [2022-01-31 18:36:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-01-31 18:36:36,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:36,267 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:36,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 18:36:36,267 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 29764013, now seen corresponding path program 85 times [2022-01-31 18:36:36,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484747090] [2022-01-31 18:36:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:36,269 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:36,269 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:36,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:36,275 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:36,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 18:36:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 18:36:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-01-31 18:36:36,767 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484747090] [2022-01-31 18:36:36,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1484747090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:36,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:36,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 18:36:36,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358787788] [2022-01-31 18:36:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:36,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 18:36:36,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 18:36:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:36:36,769 INFO L87 Difference]: Start difference. First operand 255 states and 286 transitions. Second operand has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:37,322 INFO L93 Difference]: Finished difference Result 389 states and 455 transitions. [2022-01-31 18:36:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 18:36:37,322 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 480 [2022-01-31 18:36:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:37,323 INFO L225 Difference]: With dead ends: 389 [2022-01-31 18:36:37,323 INFO L226 Difference]: Without dead ends: 262 [2022-01-31 18:36:37,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:36:37,324 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 309 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:37,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 44 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:36:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-31 18:36:37,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 259. [2022-01-31 18:36:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 251 states have (on average 1.1235059760956174) internal successors, (282), 251 states have internal predecessors, (282), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 291 transitions. [2022-01-31 18:36:37,362 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 291 transitions. Word has length 480 [2022-01-31 18:36:37,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:37,363 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 291 transitions. [2022-01-31 18:36:37,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 291 transitions. [2022-01-31 18:36:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-01-31 18:36:37,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:37,365 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:37,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 18:36:37,365 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1324040696, now seen corresponding path program 86 times [2022-01-31 18:36:37,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:37,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965188735] [2022-01-31 18:36:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:37,367 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:37,367 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:37,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:37,371 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 18:36:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 18:36:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-01-31 18:36:37,834 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:37,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965188735] [2022-01-31 18:36:37,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1965188735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:37,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:37,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 18:36:37,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614726916] [2022-01-31 18:36:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:37,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 18:36:37,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 18:36:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:36:37,835 INFO L87 Difference]: Start difference. First operand 259 states and 291 transitions. Second operand has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:38,436 INFO L93 Difference]: Finished difference Result 397 states and 465 transitions. [2022-01-31 18:36:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:36:38,436 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 492 [2022-01-31 18:36:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:38,437 INFO L225 Difference]: With dead ends: 397 [2022-01-31 18:36:38,437 INFO L226 Difference]: Without dead ends: 266 [2022-01-31 18:36:38,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:36:38,438 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 299 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:38,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 59 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-31 18:36:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 263. [2022-01-31 18:36:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 255 states have (on average 1.1254901960784314) internal successors, (287), 255 states have internal predecessors, (287), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2022-01-31 18:36:38,497 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 492 [2022-01-31 18:36:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:38,497 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2022-01-31 18:36:38,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2022-01-31 18:36:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-01-31 18:36:38,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:38,499 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:38,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 18:36:38,500 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1948966429, now seen corresponding path program 87 times [2022-01-31 18:36:38,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:38,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240258332] [2022-01-31 18:36:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:38,502 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:38,502 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:38,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:38,507 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 18:36:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 18:36:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-31 18:36:39,054 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240258332] [2022-01-31 18:36:39,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1240258332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:39,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:39,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 18:36:39,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910875704] [2022-01-31 18:36:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:39,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 18:36:39,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 18:36:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:36:39,056 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 32 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:39,727 INFO L93 Difference]: Finished difference Result 405 states and 475 transitions. [2022-01-31 18:36:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 18:36:39,728 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 32 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 504 [2022-01-31 18:36:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:39,729 INFO L225 Difference]: With dead ends: 405 [2022-01-31 18:36:39,729 INFO L226 Difference]: Without dead ends: 270 [2022-01-31 18:36:39,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:36:39,730 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 304 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:39,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 64 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:39,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-31 18:36:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2022-01-31 18:36:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 259 states have (on average 1.1274131274131274) internal successors, (292), 259 states have internal predecessors, (292), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 301 transitions. [2022-01-31 18:36:39,793 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 301 transitions. Word has length 504 [2022-01-31 18:36:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:39,794 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 301 transitions. [2022-01-31 18:36:39,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.333333333333333) internal successors, (143), 32 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 301 transitions. [2022-01-31 18:36:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2022-01-31 18:36:39,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:39,796 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:39,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 18:36:39,797 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1538725182, now seen corresponding path program 88 times [2022-01-31 18:36:39,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:39,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812901347] [2022-01-31 18:36:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:39,799 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:39,799 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:39,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:39,804 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:40,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 18:36:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 18:36:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-01-31 18:36:40,348 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:40,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812901347] [2022-01-31 18:36:40,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1812901347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:40,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:40,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:36:40,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664880682] [2022-01-31 18:36:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:40,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:36:40,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:36:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:36:40,349 INFO L87 Difference]: Start difference. First operand 267 states and 301 transitions. Second operand has 34 states, 34 states have (on average 4.323529411764706) internal successors, (147), 33 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:41,088 INFO L93 Difference]: Finished difference Result 413 states and 485 transitions. [2022-01-31 18:36:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 18:36:41,088 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.323529411764706) internal successors, (147), 33 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 516 [2022-01-31 18:36:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:41,089 INFO L225 Difference]: With dead ends: 413 [2022-01-31 18:36:41,089 INFO L226 Difference]: Without dead ends: 274 [2022-01-31 18:36:41,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:36:41,090 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 318 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:41,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 59 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-31 18:36:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2022-01-31 18:36:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 263 states have (on average 1.129277566539924) internal successors, (297), 263 states have internal predecessors, (297), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 306 transitions. [2022-01-31 18:36:41,154 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 306 transitions. Word has length 516 [2022-01-31 18:36:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:41,154 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 306 transitions. [2022-01-31 18:36:41,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.323529411764706) internal successors, (147), 33 states have internal predecessors, (147), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 306 transitions. [2022-01-31 18:36:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2022-01-31 18:36:41,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:41,158 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:41,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 18:36:41,158 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:41,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1739958247, now seen corresponding path program 89 times [2022-01-31 18:36:41,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:41,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628922797] [2022-01-31 18:36:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:41,160 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:41,160 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:41,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:41,166 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 18:36:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 18:36:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-01-31 18:36:41,758 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:41,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628922797] [2022-01-31 18:36:41,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [628922797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:41,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:41,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:36:41,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948691875] [2022-01-31 18:36:41,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:41,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:36:41,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:41,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:36:41,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:36:41,759 INFO L87 Difference]: Start difference. First operand 271 states and 306 transitions. Second operand has 35 states, 35 states have (on average 4.314285714285714) internal successors, (151), 34 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:42,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:42,478 INFO L93 Difference]: Finished difference Result 421 states and 495 transitions. [2022-01-31 18:36:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 18:36:42,478 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.314285714285714) internal successors, (151), 34 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 528 [2022-01-31 18:36:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:42,480 INFO L225 Difference]: With dead ends: 421 [2022-01-31 18:36:42,480 INFO L226 Difference]: Without dead ends: 278 [2022-01-31 18:36:42,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:36:42,481 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 320 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:42,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 64 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-31 18:36:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 275. [2022-01-31 18:36:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 267 states have (on average 1.1310861423220975) internal successors, (302), 267 states have internal predecessors, (302), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 311 transitions. [2022-01-31 18:36:42,555 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 311 transitions. Word has length 528 [2022-01-31 18:36:42,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:42,555 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 311 transitions. [2022-01-31 18:36:42,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.314285714285714) internal successors, (151), 34 states have internal predecessors, (151), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 311 transitions. [2022-01-31 18:36:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-01-31 18:36:42,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:42,558 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:42,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 18:36:42,558 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash -687953292, now seen corresponding path program 90 times [2022-01-31 18:36:42,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:42,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576790396] [2022-01-31 18:36:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:42,561 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:42,561 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:42,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:42,566 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:42,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 18:36:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 18:36:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-01-31 18:36:43,299 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:43,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576790396] [2022-01-31 18:36:43,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1576790396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:43,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:43,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:36:43,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769367726] [2022-01-31 18:36:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:43,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:36:43,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:43,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:36:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:36:43,301 INFO L87 Difference]: Start difference. First operand 275 states and 311 transitions. Second operand has 36 states, 36 states have (on average 4.305555555555555) internal successors, (155), 35 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:44,285 INFO L93 Difference]: Finished difference Result 429 states and 505 transitions. [2022-01-31 18:36:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:36:44,285 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.305555555555555) internal successors, (155), 35 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 540 [2022-01-31 18:36:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:44,287 INFO L225 Difference]: With dead ends: 429 [2022-01-31 18:36:44,287 INFO L226 Difference]: Without dead ends: 282 [2022-01-31 18:36:44,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 18:36:44,288 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 378 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:44,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 44 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:36:44,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-31 18:36:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 279. [2022-01-31 18:36:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 271 states have (on average 1.132841328413284) internal successors, (307), 271 states have internal predecessors, (307), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 316 transitions. [2022-01-31 18:36:44,426 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 316 transitions. Word has length 540 [2022-01-31 18:36:44,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:44,426 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 316 transitions. [2022-01-31 18:36:44,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.305555555555555) internal successors, (155), 35 states have internal predecessors, (155), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 316 transitions. [2022-01-31 18:36:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-01-31 18:36:44,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:44,442 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:44,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 18:36:44,442 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 992201807, now seen corresponding path program 91 times [2022-01-31 18:36:44,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990123715] [2022-01-31 18:36:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:44,449 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:44,449 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:44,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:44,454 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:44,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:44,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 18:36:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 18:36:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-01-31 18:36:45,528 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990123715] [2022-01-31 18:36:45,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1990123715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:45,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:45,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:36:45,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413652937] [2022-01-31 18:36:45,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:45,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:36:45,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:36:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:36:45,530 INFO L87 Difference]: Start difference. First operand 279 states and 316 transitions. Second operand has 37 states, 37 states have (on average 4.297297297297297) internal successors, (159), 36 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:46,379 INFO L93 Difference]: Finished difference Result 437 states and 515 transitions. [2022-01-31 18:36:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 18:36:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.297297297297297) internal successors, (159), 36 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 552 [2022-01-31 18:36:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:46,380 INFO L225 Difference]: With dead ends: 437 [2022-01-31 18:36:46,381 INFO L226 Difference]: Without dead ends: 286 [2022-01-31 18:36:46,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:36:46,382 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 362 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:46,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 54 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-31 18:36:46,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 283. [2022-01-31 18:36:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 1.1345454545454545) internal successors, (312), 275 states have internal predecessors, (312), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 321 transitions. [2022-01-31 18:36:46,427 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 321 transitions. Word has length 552 [2022-01-31 18:36:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:46,427 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 321 transitions. [2022-01-31 18:36:46,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.297297297297297) internal successors, (159), 36 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 321 transitions. [2022-01-31 18:36:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2022-01-31 18:36:46,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:46,429 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:46,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 18:36:46,430 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:46,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash -437682774, now seen corresponding path program 92 times [2022-01-31 18:36:46,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:46,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719510469] [2022-01-31 18:36:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:46,432 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:46,432 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:46,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:46,436 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:46,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 18:36:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:47,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 18:36:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-01-31 18:36:47,275 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:47,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719510469] [2022-01-31 18:36:47,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [719510469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:47,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:47,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:36:47,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987597963] [2022-01-31 18:36:47,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:47,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:36:47,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:36:47,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:36:47,277 INFO L87 Difference]: Start difference. First operand 283 states and 321 transitions. Second operand has 38 states, 38 states have (on average 4.2894736842105265) internal successors, (163), 37 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:48,284 INFO L93 Difference]: Finished difference Result 445 states and 525 transitions. [2022-01-31 18:36:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:36:48,285 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.2894736842105265) internal successors, (163), 37 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 564 [2022-01-31 18:36:48,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:48,286 INFO L225 Difference]: With dead ends: 445 [2022-01-31 18:36:48,286 INFO L226 Difference]: Without dead ends: 290 [2022-01-31 18:36:48,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:36:48,288 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 355 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:48,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 69 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-01-31 18:36:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2022-01-31 18:36:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 279 states have (on average 1.136200716845878) internal successors, (317), 279 states have internal predecessors, (317), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 326 transitions. [2022-01-31 18:36:48,347 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 326 transitions. Word has length 564 [2022-01-31 18:36:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:48,347 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 326 transitions. [2022-01-31 18:36:48,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.2894736842105265) internal successors, (163), 37 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 326 transitions. [2022-01-31 18:36:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-01-31 18:36:48,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:48,350 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:48,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 18:36:48,350 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1717534341, now seen corresponding path program 93 times [2022-01-31 18:36:48,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329299751] [2022-01-31 18:36:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:48,352 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:48,352 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:48,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:48,357 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 18:36:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 18:36:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-01-31 18:36:49,192 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:49,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329299751] [2022-01-31 18:36:49,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1329299751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:49,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:49,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:36:49,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797825471] [2022-01-31 18:36:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:49,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:36:49,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:36:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:36:49,193 INFO L87 Difference]: Start difference. First operand 287 states and 326 transitions. Second operand has 39 states, 39 states have (on average 4.282051282051282) internal successors, (167), 38 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:50,060 INFO L93 Difference]: Finished difference Result 453 states and 535 transitions. [2022-01-31 18:36:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 18:36:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.282051282051282) internal successors, (167), 38 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 576 [2022-01-31 18:36:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:50,062 INFO L225 Difference]: With dead ends: 453 [2022-01-31 18:36:50,062 INFO L226 Difference]: Without dead ends: 294 [2022-01-31 18:36:50,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:36:50,063 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 402 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:50,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 59 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-31 18:36:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2022-01-31 18:36:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 283 states have (on average 1.137809187279152) internal successors, (322), 283 states have internal predecessors, (322), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 331 transitions. [2022-01-31 18:36:50,109 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 331 transitions. Word has length 576 [2022-01-31 18:36:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:50,109 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 331 transitions. [2022-01-31 18:36:50,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.282051282051282) internal successors, (167), 38 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 331 transitions. [2022-01-31 18:36:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-01-31 18:36:50,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:50,112 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:50,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 18:36:50,112 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:50,112 INFO L85 PathProgramCache]: Analyzing trace with hash 695570144, now seen corresponding path program 94 times [2022-01-31 18:36:50,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:50,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224612525] [2022-01-31 18:36:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:50,113 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:50,113 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:50,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:50,117 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 18:36:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 18:36:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-01-31 18:36:51,168 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:51,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224612525] [2022-01-31 18:36:51,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224612525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:51,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:51,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:36:51,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339948750] [2022-01-31 18:36:51,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:51,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:36:51,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:51,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:36:51,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:36:51,170 INFO L87 Difference]: Start difference. First operand 291 states and 331 transitions. Second operand has 40 states, 40 states have (on average 4.275) internal successors, (171), 39 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:52,117 INFO L93 Difference]: Finished difference Result 461 states and 545 transitions. [2022-01-31 18:36:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:36:52,118 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.275) internal successors, (171), 39 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 588 [2022-01-31 18:36:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:52,119 INFO L225 Difference]: With dead ends: 461 [2022-01-31 18:36:52,119 INFO L226 Difference]: Without dead ends: 298 [2022-01-31 18:36:52,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:36:52,120 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 412 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:52,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 49 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-31 18:36:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 295. [2022-01-31 18:36:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 287 states have (on average 1.1393728222996515) internal successors, (327), 287 states have internal predecessors, (327), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2022-01-31 18:36:52,169 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 588 [2022-01-31 18:36:52,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:52,169 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2022-01-31 18:36:52,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.275) internal successors, (171), 39 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2022-01-31 18:36:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-01-31 18:36:52,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:52,172 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:52,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 18:36:52,173 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash -369398085, now seen corresponding path program 95 times [2022-01-31 18:36:52,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:52,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390575379] [2022-01-31 18:36:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:52,175 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:52,175 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:52,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:52,180 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 18:36:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 18:36:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-01-31 18:36:53,041 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:53,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390575379] [2022-01-31 18:36:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1390575379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:53,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:53,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 18:36:53,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092924475] [2022-01-31 18:36:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 18:36:53,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 18:36:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:36:53,043 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand has 41 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 40 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:54,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:54,159 INFO L93 Difference]: Finished difference Result 469 states and 555 transitions. [2022-01-31 18:36:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 18:36:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 40 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 600 [2022-01-31 18:36:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:54,161 INFO L225 Difference]: With dead ends: 469 [2022-01-31 18:36:54,161 INFO L226 Difference]: Without dead ends: 302 [2022-01-31 18:36:54,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:36:54,162 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 403 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:54,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 54 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-01-31 18:36:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2022-01-31 18:36:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 291 states have (on average 1.140893470790378) internal successors, (332), 291 states have internal predecessors, (332), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:54,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 341 transitions. [2022-01-31 18:36:54,211 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 341 transitions. Word has length 600 [2022-01-31 18:36:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:54,211 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 341 transitions. [2022-01-31 18:36:54,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 40 states have internal predecessors, (175), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 341 transitions. [2022-01-31 18:36:54,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2022-01-31 18:36:54,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:54,214 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 114, 114, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:54,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 18:36:54,214 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash 547413526, now seen corresponding path program 96 times [2022-01-31 18:36:54,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:54,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749078630] [2022-01-31 18:36:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:54,220 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:54,220 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:54,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:54,225 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:54,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 18:36:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 18:36:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-01-31 18:36:54,942 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:54,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749078630] [2022-01-31 18:36:54,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1749078630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:54,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:54,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:36:54,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128874039] [2022-01-31 18:36:54,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:54,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:36:54,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:36:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:36:54,944 INFO L87 Difference]: Start difference. First operand 299 states and 341 transitions. Second operand has 42 states, 42 states have (on average 4.261904761904762) internal successors, (179), 41 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:56,137 INFO L93 Difference]: Finished difference Result 477 states and 565 transitions. [2022-01-31 18:36:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:36:56,138 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.261904761904762) internal successors, (179), 41 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 612 [2022-01-31 18:36:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:56,147 INFO L225 Difference]: With dead ends: 477 [2022-01-31 18:36:56,147 INFO L226 Difference]: Without dead ends: 306 [2022-01-31 18:36:56,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:36:56,150 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 428 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:56,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 64 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:36:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-31 18:36:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2022-01-31 18:36:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 295 states have (on average 1.1423728813559322) internal successors, (337), 295 states have internal predecessors, (337), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 346 transitions. [2022-01-31 18:36:56,206 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 346 transitions. Word has length 612 [2022-01-31 18:36:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:56,206 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 346 transitions. [2022-01-31 18:36:56,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.261904761904762) internal successors, (179), 41 states have internal predecessors, (179), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:56,206 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 346 transitions. [2022-01-31 18:36:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2022-01-31 18:36:56,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:56,209 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:56,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 18:36:56,209 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:56,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1945476337, now seen corresponding path program 97 times [2022-01-31 18:36:56,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:56,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794468624] [2022-01-31 18:36:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:56,211 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:56,211 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:56,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:56,217 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 18:36:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 18:36:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-01-31 18:36:56,968 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:56,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794468624] [2022-01-31 18:36:56,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1794468624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:56,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:56,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 18:36:56,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272307400] [2022-01-31 18:36:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:56,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 18:36:56,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:56,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 18:36:56,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:36:56,969 INFO L87 Difference]: Start difference. First operand 303 states and 346 transitions. Second operand has 43 states, 43 states have (on average 4.255813953488372) internal successors, (183), 42 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:36:57,890 INFO L93 Difference]: Finished difference Result 485 states and 575 transitions. [2022-01-31 18:36:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 18:36:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.255813953488372) internal successors, (183), 42 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 624 [2022-01-31 18:36:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:36:57,892 INFO L225 Difference]: With dead ends: 485 [2022-01-31 18:36:57,892 INFO L226 Difference]: Without dead ends: 310 [2022-01-31 18:36:57,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 18:36:57,894 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 420 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:57,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 49 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:36:57,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-01-31 18:36:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 307. [2022-01-31 18:36:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 299 states have (on average 1.1438127090301002) internal successors, (342), 299 states have internal predecessors, (342), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:36:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 351 transitions. [2022-01-31 18:36:57,947 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 351 transitions. Word has length 624 [2022-01-31 18:36:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:36:57,948 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 351 transitions. [2022-01-31 18:36:57,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.255813953488372) internal successors, (183), 42 states have internal predecessors, (183), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:36:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 351 transitions. [2022-01-31 18:36:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-01-31 18:36:57,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:57,950 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 120, 120, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:57,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 18:36:57,950 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:57,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:57,951 INFO L85 PathProgramCache]: Analyzing trace with hash 677997388, now seen corresponding path program 98 times [2022-01-31 18:36:57,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:57,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692173183] [2022-01-31 18:36:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:57,952 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:36:57,952 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:36:57,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:57,957 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:36:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 18:36:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 18:36:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-01-31 18:36:58,869 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:58,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692173183] [2022-01-31 18:36:58,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [692173183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:58,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:58,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 18:36:58,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815329815] [2022-01-31 18:36:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 18:36:58,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 18:36:58,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 18:36:58,870 INFO L87 Difference]: Start difference. First operand 307 states and 351 transitions. Second operand has 44 states, 44 states have (on average 4.25) internal successors, (187), 43 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:00,038 INFO L93 Difference]: Finished difference Result 493 states and 585 transitions. [2022-01-31 18:37:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:37:00,039 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.25) internal successors, (187), 43 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 636 [2022-01-31 18:37:00,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:00,040 INFO L225 Difference]: With dead ends: 493 [2022-01-31 18:37:00,040 INFO L226 Difference]: Without dead ends: 314 [2022-01-31 18:37:00,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:37:00,041 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 488 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:00,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 39 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-31 18:37:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2022-01-31 18:37:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 303 states have (on average 1.1452145214521452) internal successors, (347), 303 states have internal predecessors, (347), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 356 transitions. [2022-01-31 18:37:00,096 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 356 transitions. Word has length 636 [2022-01-31 18:37:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:00,096 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 356 transitions. [2022-01-31 18:37:00,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.25) internal successors, (187), 43 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 356 transitions. [2022-01-31 18:37:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-01-31 18:37:00,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:00,098 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 123, 123, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:00,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 18:37:00,099 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:00,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1874065113, now seen corresponding path program 99 times [2022-01-31 18:37:00,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:00,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907054768] [2022-01-31 18:37:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:00,101 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:00,101 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:00,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:00,108 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 18:37:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 18:37:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-01-31 18:37:01,030 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:01,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907054768] [2022-01-31 18:37:01,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [907054768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:01,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:01,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 18:37:01,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523777221] [2022-01-31 18:37:01,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:01,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 18:37:01,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 18:37:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 18:37:01,032 INFO L87 Difference]: Start difference. First operand 311 states and 356 transitions. Second operand has 45 states, 45 states have (on average 4.2444444444444445) internal successors, (191), 44 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:02,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:02,074 INFO L93 Difference]: Finished difference Result 501 states and 595 transitions. [2022-01-31 18:37:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 18:37:02,074 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.2444444444444445) internal successors, (191), 44 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 648 [2022-01-31 18:37:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:02,076 INFO L225 Difference]: With dead ends: 501 [2022-01-31 18:37:02,076 INFO L226 Difference]: Without dead ends: 318 [2022-01-31 18:37:02,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 18:37:02,078 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 436 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:02,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 54 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-31 18:37:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 315. [2022-01-31 18:37:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 307 states have (on average 1.1465798045602607) internal successors, (352), 307 states have internal predecessors, (352), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2022-01-31 18:37:02,158 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 648 [2022-01-31 18:37:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:02,158 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2022-01-31 18:37:02,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.2444444444444445) internal successors, (191), 44 states have internal predecessors, (191), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2022-01-31 18:37:02,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2022-01-31 18:37:02,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:02,174 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 126, 126, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:02,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 18:37:02,175 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2077046402, now seen corresponding path program 100 times [2022-01-31 18:37:02,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:02,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886859601] [2022-01-31 18:37:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:02,177 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:02,177 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:02,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:02,182 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 18:37:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 18:37:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-01-31 18:37:03,260 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:03,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886859601] [2022-01-31 18:37:03,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [886859601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:03,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:03,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:37:03,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340857271] [2022-01-31 18:37:03,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:03,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:37:03,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:37:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:37:03,262 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand has 46 states, 46 states have (on average 4.239130434782608) internal successors, (195), 45 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:04,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:04,479 INFO L93 Difference]: Finished difference Result 509 states and 605 transitions. [2022-01-31 18:37:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:37:04,479 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.239130434782608) internal successors, (195), 45 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 660 [2022-01-31 18:37:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:04,480 INFO L225 Difference]: With dead ends: 509 [2022-01-31 18:37:04,480 INFO L226 Difference]: Without dead ends: 322 [2022-01-31 18:37:04,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 18:37:04,482 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 473 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:04,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 59 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-31 18:37:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 319. [2022-01-31 18:37:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 311 states have (on average 1.1479099678456592) internal successors, (357), 311 states have internal predecessors, (357), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 366 transitions. [2022-01-31 18:37:04,548 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 366 transitions. Word has length 660 [2022-01-31 18:37:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:04,548 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 366 transitions. [2022-01-31 18:37:04,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.239130434782608) internal successors, (195), 45 states have internal predecessors, (195), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 366 transitions. [2022-01-31 18:37:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2022-01-31 18:37:04,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:04,574 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 129, 129, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:04,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 18:37:04,575 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1459834019, now seen corresponding path program 101 times [2022-01-31 18:37:04,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464413515] [2022-01-31 18:37:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:04,579 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:04,579 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:04,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:04,586 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:04,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 18:37:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 18:37:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-01-31 18:37:05,703 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:05,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464413515] [2022-01-31 18:37:05,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1464413515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:05,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:05,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 18:37:05,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915055775] [2022-01-31 18:37:05,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:05,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 18:37:05,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 18:37:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 18:37:05,705 INFO L87 Difference]: Start difference. First operand 319 states and 366 transitions. Second operand has 47 states, 47 states have (on average 4.23404255319149) internal successors, (199), 46 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:06,978 INFO L93 Difference]: Finished difference Result 517 states and 615 transitions. [2022-01-31 18:37:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:37:06,978 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.23404255319149) internal successors, (199), 46 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 672 [2022-01-31 18:37:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:06,979 INFO L225 Difference]: With dead ends: 517 [2022-01-31 18:37:06,980 INFO L226 Difference]: Without dead ends: 326 [2022-01-31 18:37:06,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:37:06,985 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 529 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:06,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 39 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:06,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-01-31 18:37:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2022-01-31 18:37:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 315 states have (on average 1.1492063492063491) internal successors, (362), 315 states have internal predecessors, (362), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 371 transitions. [2022-01-31 18:37:07,069 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 371 transitions. Word has length 672 [2022-01-31 18:37:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:07,070 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 371 transitions. [2022-01-31 18:37:07,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.23404255319149) internal successors, (199), 46 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 371 transitions. [2022-01-31 18:37:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2022-01-31 18:37:07,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:07,073 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 132, 132, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:07,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 18:37:07,073 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 868892600, now seen corresponding path program 102 times [2022-01-31 18:37:07,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:07,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170953532] [2022-01-31 18:37:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:07,075 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:07,075 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:07,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:07,081 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 18:37:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 18:37:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-01-31 18:37:07,964 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170953532] [2022-01-31 18:37:07,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1170953532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:07,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:07,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 18:37:07,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329905320] [2022-01-31 18:37:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:07,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 18:37:07,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 18:37:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:37:07,965 INFO L87 Difference]: Start difference. First operand 323 states and 371 transitions. Second operand has 48 states, 48 states have (on average 4.229166666666667) internal successors, (203), 47 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:09,105 INFO L93 Difference]: Finished difference Result 525 states and 625 transitions. [2022-01-31 18:37:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:37:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.229166666666667) internal successors, (203), 47 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 684 [2022-01-31 18:37:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:09,107 INFO L225 Difference]: With dead ends: 525 [2022-01-31 18:37:09,107 INFO L226 Difference]: Without dead ends: 330 [2022-01-31 18:37:09,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:37:09,108 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 486 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:09,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 54 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-31 18:37:09,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 327. [2022-01-31 18:37:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 319 states have (on average 1.1504702194357366) internal successors, (367), 319 states have internal predecessors, (367), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 376 transitions. [2022-01-31 18:37:09,224 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 376 transitions. Word has length 684 [2022-01-31 18:37:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:09,225 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 376 transitions. [2022-01-31 18:37:09,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.229166666666667) internal successors, (203), 47 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:09,225 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 376 transitions. [2022-01-31 18:37:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-01-31 18:37:09,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:09,228 INFO L514 BasicCegarLoop]: trace histogram [135, 135, 135, 135, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:09,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 18:37:09,228 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 101030803, now seen corresponding path program 103 times [2022-01-31 18:37:09,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:09,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000712221] [2022-01-31 18:37:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:09,230 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:09,230 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:09,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:09,237 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 18:37:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 18:37:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-01-31 18:37:10,278 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:10,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000712221] [2022-01-31 18:37:10,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1000712221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:10,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:10,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:37:10,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072377627] [2022-01-31 18:37:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:10,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:37:10,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:10,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:37:10,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:37:10,279 INFO L87 Difference]: Start difference. First operand 327 states and 376 transitions. Second operand has 49 states, 49 states have (on average 4.224489795918367) internal successors, (207), 48 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:11,447 INFO L93 Difference]: Finished difference Result 533 states and 635 transitions. [2022-01-31 18:37:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:37:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.224489795918367) internal successors, (207), 48 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 696 [2022-01-31 18:37:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:11,448 INFO L225 Difference]: With dead ends: 533 [2022-01-31 18:37:11,449 INFO L226 Difference]: Without dead ends: 334 [2022-01-31 18:37:11,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 18:37:11,449 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 512 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:11,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 44 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-31 18:37:11,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2022-01-31 18:37:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 323 states have (on average 1.151702786377709) internal successors, (372), 323 states have internal predecessors, (372), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 381 transitions. [2022-01-31 18:37:11,509 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 381 transitions. Word has length 696 [2022-01-31 18:37:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:11,510 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 381 transitions. [2022-01-31 18:37:11,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.224489795918367) internal successors, (207), 48 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 381 transitions. [2022-01-31 18:37:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2022-01-31 18:37:11,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:11,513 INFO L514 BasicCegarLoop]: trace histogram [138, 138, 138, 138, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:11,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 18:37:11,513 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:11,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1197377262, now seen corresponding path program 104 times [2022-01-31 18:37:11,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:11,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274250575] [2022-01-31 18:37:11,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:11,514 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:11,514 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:11,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:11,520 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 18:37:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 18:37:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-01-31 18:37:12,479 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:12,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274250575] [2022-01-31 18:37:12,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1274250575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:12,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:12,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 18:37:12,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489161568] [2022-01-31 18:37:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:12,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 18:37:12,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 18:37:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 18:37:12,482 INFO L87 Difference]: Start difference. First operand 331 states and 381 transitions. Second operand has 50 states, 50 states have (on average 4.22) internal successors, (211), 49 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:13,861 INFO L93 Difference]: Finished difference Result 541 states and 645 transitions. [2022-01-31 18:37:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:37:13,861 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.22) internal successors, (211), 49 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 708 [2022-01-31 18:37:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:13,862 INFO L225 Difference]: With dead ends: 541 [2022-01-31 18:37:13,862 INFO L226 Difference]: Without dead ends: 338 [2022-01-31 18:37:13,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:37:13,863 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 512 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:13,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 49 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:13,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-31 18:37:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 335. [2022-01-31 18:37:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 327 states have (on average 1.1529051987767585) internal successors, (377), 327 states have internal predecessors, (377), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 386 transitions. [2022-01-31 18:37:13,926 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 386 transitions. Word has length 708 [2022-01-31 18:37:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:13,926 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 386 transitions. [2022-01-31 18:37:13,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.22) internal successors, (211), 49 states have internal predecessors, (211), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 386 transitions. [2022-01-31 18:37:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2022-01-31 18:37:13,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:13,929 INFO L514 BasicCegarLoop]: trace histogram [141, 141, 141, 141, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:13,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 18:37:13,929 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -849034807, now seen corresponding path program 105 times [2022-01-31 18:37:13,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:13,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519340230] [2022-01-31 18:37:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:13,932 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:13,932 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:13,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:13,937 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:14,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:14,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 18:37:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 18:37:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-01-31 18:37:14,930 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:14,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519340230] [2022-01-31 18:37:14,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519340230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:14,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:14,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 18:37:14,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956298932] [2022-01-31 18:37:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:14,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 18:37:14,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 18:37:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:37:14,931 INFO L87 Difference]: Start difference. First operand 335 states and 386 transitions. Second operand has 51 states, 51 states have (on average 4.215686274509804) internal successors, (215), 50 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:16,198 INFO L93 Difference]: Finished difference Result 549 states and 655 transitions. [2022-01-31 18:37:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 18:37:16,198 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.215686274509804) internal successors, (215), 50 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 720 [2022-01-31 18:37:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:16,199 INFO L225 Difference]: With dead ends: 549 [2022-01-31 18:37:16,199 INFO L226 Difference]: Without dead ends: 342 [2022-01-31 18:37:16,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 18:37:16,201 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 505 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:16,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 59 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-31 18:37:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2022-01-31 18:37:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.1540785498489425) internal successors, (382), 331 states have internal predecessors, (382), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 391 transitions. [2022-01-31 18:37:16,264 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 391 transitions. Word has length 720 [2022-01-31 18:37:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:16,264 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 391 transitions. [2022-01-31 18:37:16,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.215686274509804) internal successors, (215), 50 states have internal predecessors, (215), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 391 transitions. [2022-01-31 18:37:16,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2022-01-31 18:37:16,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:16,268 INFO L514 BasicCegarLoop]: trace histogram [144, 144, 144, 144, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:16,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 18:37:16,268 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:16,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1954018268, now seen corresponding path program 106 times [2022-01-31 18:37:16,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:16,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633840346] [2022-01-31 18:37:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:16,270 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:16,270 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:16,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:16,277 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 18:37:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 18:37:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-01-31 18:37:17,311 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:17,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633840346] [2022-01-31 18:37:17,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1633840346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:17,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:17,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:37:17,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059157693] [2022-01-31 18:37:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:17,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:37:17,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:37:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:37:17,312 INFO L87 Difference]: Start difference. First operand 339 states and 391 transitions. Second operand has 52 states, 52 states have (on average 4.211538461538462) internal successors, (219), 51 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:18,580 INFO L93 Difference]: Finished difference Result 557 states and 665 transitions. [2022-01-31 18:37:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:37:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.211538461538462) internal successors, (219), 51 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 732 [2022-01-31 18:37:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:18,581 INFO L225 Difference]: With dead ends: 557 [2022-01-31 18:37:18,581 INFO L226 Difference]: Without dead ends: 346 [2022-01-31 18:37:18,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:37:18,583 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 510 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:18,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 49 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:18,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-01-31 18:37:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 343. [2022-01-31 18:37:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 335 states have (on average 1.155223880597015) internal successors, (387), 335 states have internal predecessors, (387), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 396 transitions. [2022-01-31 18:37:18,649 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 396 transitions. Word has length 732 [2022-01-31 18:37:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:18,649 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 396 transitions. [2022-01-31 18:37:18,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.211538461538462) internal successors, (219), 51 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 396 transitions. [2022-01-31 18:37:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-01-31 18:37:18,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:18,652 INFO L514 BasicCegarLoop]: trace histogram [147, 147, 147, 147, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:18,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 18:37:18,653 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash 51914239, now seen corresponding path program 107 times [2022-01-31 18:37:18,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:18,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973560205] [2022-01-31 18:37:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:18,654 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:18,654 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:18,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:18,660 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 18:37:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-01-31 18:37:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-01-31 18:37:19,728 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:19,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973560205] [2022-01-31 18:37:19,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1973560205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:19,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:19,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:37:19,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735717224] [2022-01-31 18:37:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:19,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:37:19,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:37:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:37:19,729 INFO L87 Difference]: Start difference. First operand 343 states and 396 transitions. Second operand has 53 states, 53 states have (on average 4.2075471698113205) internal successors, (223), 52 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:21,056 INFO L93 Difference]: Finished difference Result 565 states and 675 transitions. [2022-01-31 18:37:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:37:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.2075471698113205) internal successors, (223), 52 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 744 [2022-01-31 18:37:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:21,057 INFO L225 Difference]: With dead ends: 565 [2022-01-31 18:37:21,057 INFO L226 Difference]: Without dead ends: 350 [2022-01-31 18:37:21,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:37:21,059 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 554 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:21,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 49 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-01-31 18:37:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 347. [2022-01-31 18:37:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 339 states have (on average 1.1563421828908556) internal successors, (392), 339 states have internal predecessors, (392), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 401 transitions. [2022-01-31 18:37:21,125 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 401 transitions. Word has length 744 [2022-01-31 18:37:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:21,126 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 401 transitions. [2022-01-31 18:37:21,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.2075471698113205) internal successors, (223), 52 states have internal predecessors, (223), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 401 transitions. [2022-01-31 18:37:21,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2022-01-31 18:37:21,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:21,140 INFO L514 BasicCegarLoop]: trace histogram [150, 150, 150, 150, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:21,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 18:37:21,140 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:21,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1287336102, now seen corresponding path program 108 times [2022-01-31 18:37:21,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:21,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006512658] [2022-01-31 18:37:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:21,142 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:21,142 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:21,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:21,148 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 18:37:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-01-31 18:37:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-01-31 18:37:22,233 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:22,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006512658] [2022-01-31 18:37:22,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2006512658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:22,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:22,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:37:22,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888798445] [2022-01-31 18:37:22,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:22,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:37:22,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:37:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:37:22,235 INFO L87 Difference]: Start difference. First operand 347 states and 401 transitions. Second operand has 54 states, 54 states have (on average 4.203703703703703) internal successors, (227), 53 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:23,645 INFO L93 Difference]: Finished difference Result 573 states and 685 transitions. [2022-01-31 18:37:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:37:23,645 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.203703703703703) internal successors, (227), 53 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 756 [2022-01-31 18:37:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:23,646 INFO L225 Difference]: With dead ends: 573 [2022-01-31 18:37:23,646 INFO L226 Difference]: Without dead ends: 354 [2022-01-31 18:37:23,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 18:37:23,648 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 534 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:23,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 49 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-31 18:37:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 351. [2022-01-31 18:37:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 343 states have (on average 1.1574344023323615) internal successors, (397), 343 states have internal predecessors, (397), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 406 transitions. [2022-01-31 18:37:23,725 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 406 transitions. Word has length 756 [2022-01-31 18:37:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:23,726 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 406 transitions. [2022-01-31 18:37:23,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.203703703703703) internal successors, (227), 53 states have internal predecessors, (227), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 406 transitions. [2022-01-31 18:37:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2022-01-31 18:37:23,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:23,729 INFO L514 BasicCegarLoop]: trace histogram [153, 153, 153, 153, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:23,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 18:37:23,729 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1994536907, now seen corresponding path program 109 times [2022-01-31 18:37:23,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:23,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546897059] [2022-01-31 18:37:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:23,730 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:23,730 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:23,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:23,736 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:23,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:24,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 18:37:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-01-31 18:37:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-01-31 18:37:24,849 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546897059] [2022-01-31 18:37:24,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1546897059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:24,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:24,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:37:24,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279306972] [2022-01-31 18:37:24,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:24,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:37:24,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:37:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:37:24,850 INFO L87 Difference]: Start difference. First operand 351 states and 406 transitions. Second operand has 55 states, 55 states have (on average 4.2) internal successors, (231), 54 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:26,232 INFO L93 Difference]: Finished difference Result 581 states and 695 transitions. [2022-01-31 18:37:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 18:37:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.2) internal successors, (231), 54 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 768 [2022-01-31 18:37:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:26,233 INFO L225 Difference]: With dead ends: 581 [2022-01-31 18:37:26,233 INFO L226 Difference]: Without dead ends: 358 [2022-01-31 18:37:26,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 18:37:26,234 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 581 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:26,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 34 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-31 18:37:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 355. [2022-01-31 18:37:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 347 states have (on average 1.15850144092219) internal successors, (402), 347 states have internal predecessors, (402), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 411 transitions. [2022-01-31 18:37:26,304 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 411 transitions. Word has length 768 [2022-01-31 18:37:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:26,304 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 411 transitions. [2022-01-31 18:37:26,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.2) internal successors, (231), 54 states have internal predecessors, (231), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 411 transitions. [2022-01-31 18:37:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2022-01-31 18:37:26,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:26,307 INFO L514 BasicCegarLoop]: trace histogram [156, 156, 156, 156, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:26,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 18:37:26,307 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1335021712, now seen corresponding path program 110 times [2022-01-31 18:37:26,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:26,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991472344] [2022-01-31 18:37:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:26,309 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:26,309 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:26,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:26,314 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:27,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 18:37:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-01-31 18:37:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 424 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-01-31 18:37:27,517 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:27,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991472344] [2022-01-31 18:37:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [991472344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:27,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:27,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:37:27,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852959443] [2022-01-31 18:37:27,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:27,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:37:27,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:37:27,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:37:27,519 INFO L87 Difference]: Start difference. First operand 355 states and 411 transitions. Second operand has 56 states, 56 states have (on average 4.196428571428571) internal successors, (235), 55 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:28,998 INFO L93 Difference]: Finished difference Result 589 states and 705 transitions. [2022-01-31 18:37:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:37:28,998 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.196428571428571) internal successors, (235), 55 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 780 [2022-01-31 18:37:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:29,003 INFO L225 Difference]: With dead ends: 589 [2022-01-31 18:37:29,003 INFO L226 Difference]: Without dead ends: 362 [2022-01-31 18:37:29,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:37:29,006 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 534 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:29,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 74 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:29,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-31 18:37:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 359. [2022-01-31 18:37:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 351 states have (on average 1.1595441595441596) internal successors, (407), 351 states have internal predecessors, (407), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 416 transitions. [2022-01-31 18:37:29,089 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 416 transitions. Word has length 780 [2022-01-31 18:37:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:29,089 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 416 transitions. [2022-01-31 18:37:29,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.196428571428571) internal successors, (235), 55 states have internal predecessors, (235), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 416 transitions. [2022-01-31 18:37:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2022-01-31 18:37:29,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:29,093 INFO L514 BasicCegarLoop]: trace histogram [159, 159, 159, 159, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:29,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 18:37:29,093 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:29,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:29,093 INFO L85 PathProgramCache]: Analyzing trace with hash 527673451, now seen corresponding path program 111 times [2022-01-31 18:37:29,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:29,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262732929] [2022-01-31 18:37:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:29,094 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:29,094 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:29,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:29,100 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 18:37:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-01-31 18:37:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-01-31 18:37:30,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:30,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262732929] [2022-01-31 18:37:30,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1262732929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:30,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:30,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:37:30,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516305269] [2022-01-31 18:37:30,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:30,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:37:30,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:37:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:37:30,399 INFO L87 Difference]: Start difference. First operand 359 states and 416 transitions. Second operand has 57 states, 57 states have (on average 4.192982456140351) internal successors, (239), 56 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:31,998 INFO L93 Difference]: Finished difference Result 597 states and 715 transitions. [2022-01-31 18:37:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 18:37:31,998 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.192982456140351) internal successors, (239), 56 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 792 [2022-01-31 18:37:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:31,999 INFO L225 Difference]: With dead ends: 597 [2022-01-31 18:37:31,999 INFO L226 Difference]: Without dead ends: 366 [2022-01-31 18:37:32,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 18:37:32,001 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 551 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:32,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 64 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-31 18:37:32,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 363. [2022-01-31 18:37:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 355 states have (on average 1.1605633802816901) internal successors, (412), 355 states have internal predecessors, (412), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 421 transitions. [2022-01-31 18:37:32,074 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 421 transitions. Word has length 792 [2022-01-31 18:37:32,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:32,074 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 421 transitions. [2022-01-31 18:37:32,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.192982456140351) internal successors, (239), 56 states have internal predecessors, (239), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 421 transitions. [2022-01-31 18:37:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2022-01-31 18:37:32,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:32,078 INFO L514 BasicCegarLoop]: trace histogram [162, 162, 162, 162, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 18:37:32,078 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash -814739514, now seen corresponding path program 112 times [2022-01-31 18:37:32,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:32,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157872485] [2022-01-31 18:37:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:32,080 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:32,080 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:32,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:32,085 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:33,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 18:37:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-01-31 18:37:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-01-31 18:37:33,321 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:33,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157872485] [2022-01-31 18:37:33,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [157872485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:33,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:33,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:37:33,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829090561] [2022-01-31 18:37:33,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:33,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:37:33,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:33,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:37:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:37:33,323 INFO L87 Difference]: Start difference. First operand 363 states and 421 transitions. Second operand has 58 states, 58 states have (on average 4.189655172413793) internal successors, (243), 57 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:34,879 INFO L93 Difference]: Finished difference Result 605 states and 725 transitions. [2022-01-31 18:37:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:37:34,879 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.189655172413793) internal successors, (243), 57 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 804 [2022-01-31 18:37:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:34,881 INFO L225 Difference]: With dead ends: 605 [2022-01-31 18:37:34,881 INFO L226 Difference]: Without dead ends: 370 [2022-01-31 18:37:34,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:37:34,883 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 593 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:34,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 49 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:34,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-31 18:37:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2022-01-31 18:37:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 359 states have (on average 1.1615598885793872) internal successors, (417), 359 states have internal predecessors, (417), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 426 transitions. [2022-01-31 18:37:34,959 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 426 transitions. Word has length 804 [2022-01-31 18:37:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:34,960 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 426 transitions. [2022-01-31 18:37:34,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.189655172413793) internal successors, (243), 57 states have internal predecessors, (243), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 426 transitions. [2022-01-31 18:37:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2022-01-31 18:37:34,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:34,964 INFO L514 BasicCegarLoop]: trace histogram [165, 165, 165, 165, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:34,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 18:37:34,964 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1679279777, now seen corresponding path program 113 times [2022-01-31 18:37:34,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:34,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976848536] [2022-01-31 18:37:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:34,965 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:34,965 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:34,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:34,971 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:35,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 18:37:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-01-31 18:37:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-01-31 18:37:36,268 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:36,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976848536] [2022-01-31 18:37:36,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1976848536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:36,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:36,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:37:36,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574999519] [2022-01-31 18:37:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:36,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:37:36,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:37:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:37:36,271 INFO L87 Difference]: Start difference. First operand 367 states and 426 transitions. Second operand has 59 states, 59 states have (on average 4.186440677966102) internal successors, (247), 58 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:37,909 INFO L93 Difference]: Finished difference Result 613 states and 735 transitions. [2022-01-31 18:37:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:37:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.186440677966102) internal successors, (247), 58 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 816 [2022-01-31 18:37:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:37,911 INFO L225 Difference]: With dead ends: 613 [2022-01-31 18:37:37,911 INFO L226 Difference]: Without dead ends: 374 [2022-01-31 18:37:37,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:37:37,913 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 601 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:37,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 49 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-31 18:37:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 371. [2022-01-31 18:37:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 363 states have (on average 1.162534435261708) internal successors, (422), 363 states have internal predecessors, (422), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 431 transitions. [2022-01-31 18:37:38,008 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 431 transitions. Word has length 816 [2022-01-31 18:37:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 431 transitions. [2022-01-31 18:37:38,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.186440677966102) internal successors, (247), 58 states have internal predecessors, (247), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 431 transitions. [2022-01-31 18:37:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2022-01-31 18:37:38,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:38,012 INFO L514 BasicCegarLoop]: trace histogram [168, 168, 168, 168, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:38,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 18:37:38,012 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:38,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2145029372, now seen corresponding path program 114 times [2022-01-31 18:37:38,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:38,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198777816] [2022-01-31 18:37:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:38,013 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:38,013 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:38,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:38,019 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 18:37:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-01-31 18:37:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-01-31 18:37:39,374 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:39,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198777816] [2022-01-31 18:37:39,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1198777816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:39,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:39,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:37:39,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268569443] [2022-01-31 18:37:39,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:39,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:37:39,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:37:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:37:39,376 INFO L87 Difference]: Start difference. First operand 371 states and 431 transitions. Second operand has 60 states, 60 states have (on average 4.183333333333334) internal successors, (251), 59 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:41,021 INFO L93 Difference]: Finished difference Result 621 states and 745 transitions. [2022-01-31 18:37:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:37:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.183333333333334) internal successors, (251), 59 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 828 [2022-01-31 18:37:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:41,022 INFO L225 Difference]: With dead ends: 621 [2022-01-31 18:37:41,022 INFO L226 Difference]: Without dead ends: 378 [2022-01-31 18:37:41,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:37:41,024 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 717 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:41,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 39 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:37:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-31 18:37:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 375. [2022-01-31 18:37:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 367 states have (on average 1.1634877384196185) internal successors, (427), 367 states have internal predecessors, (427), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 436 transitions. [2022-01-31 18:37:41,104 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 436 transitions. Word has length 828 [2022-01-31 18:37:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:41,104 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 436 transitions. [2022-01-31 18:37:41,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.183333333333334) internal successors, (251), 59 states have internal predecessors, (251), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 436 transitions. [2022-01-31 18:37:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2022-01-31 18:37:41,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:41,108 INFO L514 BasicCegarLoop]: trace histogram [171, 171, 171, 171, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:41,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 18:37:41,108 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash -754441513, now seen corresponding path program 115 times [2022-01-31 18:37:41,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:41,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411896567] [2022-01-31 18:37:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:41,109 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:41,110 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:41,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:41,117 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 18:37:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2022-01-31 18:37:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-01-31 18:37:42,494 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:42,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411896567] [2022-01-31 18:37:42,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1411896567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:42,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:42,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:37:42,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352786965] [2022-01-31 18:37:42,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:42,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:37:42,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:37:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:37:42,496 INFO L87 Difference]: Start difference. First operand 375 states and 436 transitions. Second operand has 61 states, 61 states have (on average 4.180327868852459) internal successors, (255), 60 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:44,228 INFO L93 Difference]: Finished difference Result 629 states and 755 transitions. [2022-01-31 18:37:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:37:44,229 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.180327868852459) internal successors, (255), 60 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 840 [2022-01-31 18:37:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:44,230 INFO L225 Difference]: With dead ends: 629 [2022-01-31 18:37:44,230 INFO L226 Difference]: Without dead ends: 382 [2022-01-31 18:37:44,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 18:37:44,231 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 614 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:44,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 44 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:44,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-31 18:37:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 379. [2022-01-31 18:37:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 371 states have (on average 1.1644204851752022) internal successors, (432), 371 states have internal predecessors, (432), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 441 transitions. [2022-01-31 18:37:44,315 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 441 transitions. Word has length 840 [2022-01-31 18:37:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:44,315 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 441 transitions. [2022-01-31 18:37:44,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.180327868852459) internal successors, (255), 60 states have internal predecessors, (255), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 441 transitions. [2022-01-31 18:37:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2022-01-31 18:37:44,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:44,319 INFO L514 BasicCegarLoop]: trace histogram [174, 174, 174, 174, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:44,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 18:37:44,319 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:44,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1949284302, now seen corresponding path program 116 times [2022-01-31 18:37:44,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:44,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468142112] [2022-01-31 18:37:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:44,321 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:44,321 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:44,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:44,328 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 18:37:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2022-01-31 18:37:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-01-31 18:37:45,702 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:45,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468142112] [2022-01-31 18:37:45,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [468142112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:45,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:45,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:37:45,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354796626] [2022-01-31 18:37:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:45,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:37:45,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:45,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:37:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:37:45,704 INFO L87 Difference]: Start difference. First operand 379 states and 441 transitions. Second operand has 62 states, 62 states have (on average 4.17741935483871) internal successors, (259), 61 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:47,489 INFO L93 Difference]: Finished difference Result 637 states and 765 transitions. [2022-01-31 18:37:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:37:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.17741935483871) internal successors, (259), 61 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 852 [2022-01-31 18:37:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:47,490 INFO L225 Difference]: With dead ends: 637 [2022-01-31 18:37:47,490 INFO L226 Difference]: Without dead ends: 386 [2022-01-31 18:37:47,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:37:47,492 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 630 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:47,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 64 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-31 18:37:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 383. [2022-01-31 18:37:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 375 states have (on average 1.1653333333333333) internal successors, (437), 375 states have internal predecessors, (437), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 446 transitions. [2022-01-31 18:37:47,577 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 446 transitions. Word has length 852 [2022-01-31 18:37:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:47,577 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 446 transitions. [2022-01-31 18:37:47,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.17741935483871) internal successors, (259), 61 states have internal predecessors, (259), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:47,577 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 446 transitions. [2022-01-31 18:37:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2022-01-31 18:37:47,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:47,581 INFO L514 BasicCegarLoop]: trace histogram [177, 177, 177, 177, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:47,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 18:37:47,581 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -968704755, now seen corresponding path program 117 times [2022-01-31 18:37:47,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:47,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004044681] [2022-01-31 18:37:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:47,583 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:47,583 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:47,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:47,589 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:47,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 18:37:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2022-01-31 18:37:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-01-31 18:37:49,041 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004044681] [2022-01-31 18:37:49,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004044681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:49,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:49,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 18:37:49,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823215000] [2022-01-31 18:37:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:49,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 18:37:49,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 18:37:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:37:49,043 INFO L87 Difference]: Start difference. First operand 383 states and 446 transitions. Second operand has 63 states, 63 states have (on average 4.174603174603175) internal successors, (263), 62 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:50,907 INFO L93 Difference]: Finished difference Result 642 states and 771 transitions. [2022-01-31 18:37:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 18:37:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.174603174603175) internal successors, (263), 62 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 864 [2022-01-31 18:37:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:50,908 INFO L225 Difference]: With dead ends: 642 [2022-01-31 18:37:50,908 INFO L226 Difference]: Without dead ends: 387 [2022-01-31 18:37:50,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 18:37:50,910 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 677 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:50,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 44 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:37:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-31 18:37:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-01-31 18:37:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 379 states have (on average 1.16622691292876) internal successors, (442), 379 states have internal predecessors, (442), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 451 transitions. [2022-01-31 18:37:50,996 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 451 transitions. Word has length 864 [2022-01-31 18:37:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:50,996 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 451 transitions. [2022-01-31 18:37:50,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.174603174603175) internal successors, (263), 62 states have internal predecessors, (263), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 451 transitions. [2022-01-31 18:37:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2022-01-31 18:37:51,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:51,001 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:51,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 18:37:51,001 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:51,001 INFO L85 PathProgramCache]: Analyzing trace with hash -61914776, now seen corresponding path program 118 times [2022-01-31 18:37:51,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:51,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193244054] [2022-01-31 18:37:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:51,002 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:51,002 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:51,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:51,008 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2022-01-31 18:37:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:51,298 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:51,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193244054] [2022-01-31 18:37:51,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [193244054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:51,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:51,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 18:37:51,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940496695] [2022-01-31 18:37:51,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:51,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 18:37:51,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:51,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 18:37:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 18:37:51,299 INFO L87 Difference]: Start difference. First operand 387 states and 451 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:51,481 INFO L93 Difference]: Finished difference Result 641 states and 766 transitions. [2022-01-31 18:37:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 18:37:51,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 876 [2022-01-31 18:37:51,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:51,483 INFO L225 Difference]: With dead ends: 641 [2022-01-31 18:37:51,483 INFO L226 Difference]: Without dead ends: 390 [2022-01-31 18:37:51,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:37:51,484 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:51,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 40 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:37:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-31 18:37:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2022-01-31 18:37:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 381 states have (on average 1.1653543307086613) internal successors, (444), 381 states have internal predecessors, (444), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 453 transitions. [2022-01-31 18:37:51,615 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 453 transitions. Word has length 876 [2022-01-31 18:37:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:51,615 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 453 transitions. [2022-01-31 18:37:51,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:51,615 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 453 transitions. [2022-01-31 18:37:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2022-01-31 18:37:51,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:51,620 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:51,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 18:37:51,621 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:51,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1762367546, now seen corresponding path program 119 times [2022-01-31 18:37:51,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:51,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487849269] [2022-01-31 18:37:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:51,623 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:51,623 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:51,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:51,630 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2022-01-31 18:37:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:51,949 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:51,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487849269] [2022-01-31 18:37:51,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [487849269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:51,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:51,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 18:37:51,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855633368] [2022-01-31 18:37:51,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:51,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 18:37:51,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 18:37:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 18:37:51,951 INFO L87 Difference]: Start difference. First operand 389 states and 453 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:52,143 INFO L93 Difference]: Finished difference Result 643 states and 768 transitions. [2022-01-31 18:37:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 18:37:52,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 878 [2022-01-31 18:37:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:52,144 INFO L225 Difference]: With dead ends: 643 [2022-01-31 18:37:52,144 INFO L226 Difference]: Without dead ends: 392 [2022-01-31 18:37:52,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:37:52,145 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:52,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 45 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:37:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-31 18:37:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 391. [2022-01-31 18:37:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.164490861618799) internal successors, (446), 383 states have internal predecessors, (446), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 455 transitions. [2022-01-31 18:37:52,231 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 455 transitions. Word has length 878 [2022-01-31 18:37:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:52,232 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 455 transitions. [2022-01-31 18:37:52,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:52,232 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 455 transitions. [2022-01-31 18:37:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2022-01-31 18:37:52,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:52,236 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:52,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 18:37:52,236 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash 485060260, now seen corresponding path program 120 times [2022-01-31 18:37:52,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:52,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975379775] [2022-01-31 18:37:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:52,237 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:52,238 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:52,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:52,244 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2022-01-31 18:37:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:52,547 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:52,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975379775] [2022-01-31 18:37:52,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [975379775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:52,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:52,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 18:37:52,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041363188] [2022-01-31 18:37:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:52,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 18:37:52,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:52,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 18:37:52,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 18:37:52,548 INFO L87 Difference]: Start difference. First operand 391 states and 455 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:52,697 INFO L93 Difference]: Finished difference Result 645 states and 770 transitions. [2022-01-31 18:37:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 18:37:52,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 880 [2022-01-31 18:37:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:52,698 INFO L225 Difference]: With dead ends: 645 [2022-01-31 18:37:52,698 INFO L226 Difference]: Without dead ends: 394 [2022-01-31 18:37:52,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:37:52,699 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:52,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:37:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-31 18:37:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2022-01-31 18:37:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 385 states have (on average 1.1636363636363636) internal successors, (448), 385 states have internal predecessors, (448), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 457 transitions. [2022-01-31 18:37:52,786 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 457 transitions. Word has length 880 [2022-01-31 18:37:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:52,787 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 457 transitions. [2022-01-31 18:37:52,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 457 transitions. [2022-01-31 18:37:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-01-31 18:37:52,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:52,791 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:52,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 18:37:52,791 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -105368062, now seen corresponding path program 121 times [2022-01-31 18:37:52,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:52,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411217594] [2022-01-31 18:37:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:52,792 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:52,793 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:52,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:52,800 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2022-01-31 18:37:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:53,099 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:53,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411217594] [2022-01-31 18:37:53,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [411217594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:53,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:53,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 18:37:53,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381535480] [2022-01-31 18:37:53,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:53,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 18:37:53,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 18:37:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 18:37:53,100 INFO L87 Difference]: Start difference. First operand 393 states and 457 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:53,286 INFO L93 Difference]: Finished difference Result 647 states and 772 transitions. [2022-01-31 18:37:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 18:37:53,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 882 [2022-01-31 18:37:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:53,288 INFO L225 Difference]: With dead ends: 647 [2022-01-31 18:37:53,288 INFO L226 Difference]: Without dead ends: 396 [2022-01-31 18:37:53,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:37:53,289 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:53,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 40 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-31 18:37:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 395. [2022-01-31 18:37:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 387 states have (on average 1.1627906976744187) internal successors, (450), 387 states have internal predecessors, (450), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 459 transitions. [2022-01-31 18:37:53,395 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 459 transitions. Word has length 882 [2022-01-31 18:37:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:53,396 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 459 transitions. [2022-01-31 18:37:53,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 459 transitions. [2022-01-31 18:37:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2022-01-31 18:37:53,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:53,400 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:53,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 18:37:53,400 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -571302432, now seen corresponding path program 122 times [2022-01-31 18:37:53,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:53,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062771192] [2022-01-31 18:37:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:53,402 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:53,402 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:53,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:53,409 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2022-01-31 18:37:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:53,707 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:53,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062771192] [2022-01-31 18:37:53,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2062771192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:53,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:53,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 18:37:53,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413616611] [2022-01-31 18:37:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:53,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 18:37:53,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:53,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 18:37:53,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 18:37:53,708 INFO L87 Difference]: Start difference. First operand 395 states and 459 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:53,908 INFO L93 Difference]: Finished difference Result 649 states and 774 transitions. [2022-01-31 18:37:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 18:37:53,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 884 [2022-01-31 18:37:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:53,909 INFO L225 Difference]: With dead ends: 649 [2022-01-31 18:37:53,909 INFO L226 Difference]: Without dead ends: 398 [2022-01-31 18:37:53,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:37:53,909 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 36 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:53,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 45 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:53,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-31 18:37:53,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2022-01-31 18:37:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 389 states have (on average 1.1619537275064267) internal successors, (452), 389 states have internal predecessors, (452), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 461 transitions. [2022-01-31 18:37:53,997 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 461 transitions. Word has length 884 [2022-01-31 18:37:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:53,998 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 461 transitions. [2022-01-31 18:37:53,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:53,998 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 461 transitions. [2022-01-31 18:37:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2022-01-31 18:37:54,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:54,002 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:54,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 18:37:54,002 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1657633218, now seen corresponding path program 123 times [2022-01-31 18:37:54,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:54,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307238356] [2022-01-31 18:37:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:54,003 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:54,003 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:54,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:54,011 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2022-01-31 18:37:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:54,316 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:54,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307238356] [2022-01-31 18:37:54,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [307238356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:54,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:54,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 18:37:54,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892429683] [2022-01-31 18:37:54,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:54,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 18:37:54,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 18:37:54,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 18:37:54,318 INFO L87 Difference]: Start difference. First operand 397 states and 461 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:54,530 INFO L93 Difference]: Finished difference Result 651 states and 776 transitions. [2022-01-31 18:37:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 18:37:54,530 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 886 [2022-01-31 18:37:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:54,531 INFO L225 Difference]: With dead ends: 651 [2022-01-31 18:37:54,531 INFO L226 Difference]: Without dead ends: 400 [2022-01-31 18:37:54,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:37:54,532 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:54,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-31 18:37:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 399. [2022-01-31 18:37:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 391 states have (on average 1.1611253196930946) internal successors, (454), 391 states have internal predecessors, (454), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 463 transitions. [2022-01-31 18:37:54,620 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 463 transitions. Word has length 886 [2022-01-31 18:37:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:54,621 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 463 transitions. [2022-01-31 18:37:54,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 463 transitions. [2022-01-31 18:37:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2022-01-31 18:37:54,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:54,626 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:54,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 18:37:54,626 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:54,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1944465636, now seen corresponding path program 124 times [2022-01-31 18:37:54,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:54,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668356499] [2022-01-31 18:37:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:54,633 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:54,633 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:54,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:54,641 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 639 [2022-01-31 18:37:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:54,970 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:54,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668356499] [2022-01-31 18:37:54,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1668356499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:54,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:54,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 18:37:54,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572211103] [2022-01-31 18:37:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:54,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 18:37:54,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 18:37:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 18:37:54,971 INFO L87 Difference]: Start difference. First operand 399 states and 463 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:55,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:55,251 INFO L93 Difference]: Finished difference Result 653 states and 778 transitions. [2022-01-31 18:37:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 18:37:55,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 888 [2022-01-31 18:37:55,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:55,253 INFO L225 Difference]: With dead ends: 653 [2022-01-31 18:37:55,253 INFO L226 Difference]: Without dead ends: 402 [2022-01-31 18:37:55,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:37:55,254 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:55,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-01-31 18:37:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 401. [2022-01-31 18:37:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 393 states have (on average 1.1603053435114503) internal successors, (456), 393 states have internal predecessors, (456), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 465 transitions. [2022-01-31 18:37:55,417 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 465 transitions. Word has length 888 [2022-01-31 18:37:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:55,417 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 465 transitions. [2022-01-31 18:37:55,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 465 transitions. [2022-01-31 18:37:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2022-01-31 18:37:55,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:55,423 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:55,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 18:37:55,424 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1582454906, now seen corresponding path program 125 times [2022-01-31 18:37:55,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:55,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127682217] [2022-01-31 18:37:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:55,430 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:55,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:55,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:55,439 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2022-01-31 18:37:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:55,776 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:55,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127682217] [2022-01-31 18:37:55,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2127682217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:55,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:55,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 18:37:55,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580933939] [2022-01-31 18:37:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:55,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 18:37:55,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 18:37:55,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 18:37:55,777 INFO L87 Difference]: Start difference. First operand 401 states and 465 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:55,981 INFO L93 Difference]: Finished difference Result 655 states and 780 transitions. [2022-01-31 18:37:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 18:37:55,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 890 [2022-01-31 18:37:55,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:55,982 INFO L225 Difference]: With dead ends: 655 [2022-01-31 18:37:55,982 INFO L226 Difference]: Without dead ends: 404 [2022-01-31 18:37:55,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:37:55,983 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 42 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:55,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 40 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-31 18:37:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2022-01-31 18:37:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 1.159493670886076) internal successors, (458), 395 states have internal predecessors, (458), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 467 transitions. [2022-01-31 18:37:56,084 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 467 transitions. Word has length 890 [2022-01-31 18:37:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:56,085 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 467 transitions. [2022-01-31 18:37:56,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 467 transitions. [2022-01-31 18:37:56,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2022-01-31 18:37:56,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:56,089 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:56,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 18:37:56,089 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:56,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:56,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2071068072, now seen corresponding path program 126 times [2022-01-31 18:37:56,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:56,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41933071] [2022-01-31 18:37:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:56,091 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:56,091 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:56,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:56,098 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2022-01-31 18:37:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:56,422 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:56,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41933071] [2022-01-31 18:37:56,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [41933071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:56,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:56,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 18:37:56,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426992122] [2022-01-31 18:37:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:56,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 18:37:56,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 18:37:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 18:37:56,423 INFO L87 Difference]: Start difference. First operand 403 states and 467 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:56,643 INFO L93 Difference]: Finished difference Result 657 states and 782 transitions. [2022-01-31 18:37:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 18:37:56,643 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 892 [2022-01-31 18:37:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:56,644 INFO L225 Difference]: With dead ends: 657 [2022-01-31 18:37:56,644 INFO L226 Difference]: Without dead ends: 406 [2022-01-31 18:37:56,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:37:56,645 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:56,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 45 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-31 18:37:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2022-01-31 18:37:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 397 states have (on average 1.1586901763224182) internal successors, (460), 397 states have internal predecessors, (460), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 469 transitions. [2022-01-31 18:37:56,745 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 469 transitions. Word has length 892 [2022-01-31 18:37:56,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:56,746 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 469 transitions. [2022-01-31 18:37:56,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 469 transitions. [2022-01-31 18:37:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2022-01-31 18:37:56,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:56,750 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:56,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 18:37:56,750 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash 176598198, now seen corresponding path program 127 times [2022-01-31 18:37:56,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:56,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165383755] [2022-01-31 18:37:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:56,751 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:56,751 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:56,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:56,758 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2022-01-31 18:37:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:57,096 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:57,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165383755] [2022-01-31 18:37:57,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [165383755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:57,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:57,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 18:37:57,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951254785] [2022-01-31 18:37:57,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:57,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 18:37:57,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 18:37:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 18:37:57,097 INFO L87 Difference]: Start difference. First operand 405 states and 469 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:57,344 INFO L93 Difference]: Finished difference Result 659 states and 784 transitions. [2022-01-31 18:37:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 18:37:57,344 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 894 [2022-01-31 18:37:57,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:57,345 INFO L225 Difference]: With dead ends: 659 [2022-01-31 18:37:57,345 INFO L226 Difference]: Without dead ends: 408 [2022-01-31 18:37:57,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:37:57,346 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:57,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 45 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-31 18:37:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 407. [2022-01-31 18:37:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 399 states have (on average 1.1578947368421053) internal successors, (462), 399 states have internal predecessors, (462), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 471 transitions. [2022-01-31 18:37:57,433 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 471 transitions. Word has length 894 [2022-01-31 18:37:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:57,433 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 471 transitions. [2022-01-31 18:37:57,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 471 transitions. [2022-01-31 18:37:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2022-01-31 18:37:57,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:57,437 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:57,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-31 18:37:57,438 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash -184666220, now seen corresponding path program 128 times [2022-01-31 18:37:57,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387771249] [2022-01-31 18:37:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:57,439 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:57,439 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:57,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:57,446 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2022-01-31 18:37:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:57,795 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:57,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387771249] [2022-01-31 18:37:57,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [387771249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:57,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:57,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 18:37:57,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965711435] [2022-01-31 18:37:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:57,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 18:37:57,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 18:37:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 18:37:57,796 INFO L87 Difference]: Start difference. First operand 407 states and 471 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:58,058 INFO L93 Difference]: Finished difference Result 661 states and 786 transitions. [2022-01-31 18:37:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 18:37:58,058 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 896 [2022-01-31 18:37:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:58,059 INFO L225 Difference]: With dead ends: 661 [2022-01-31 18:37:58,059 INFO L226 Difference]: Without dead ends: 410 [2022-01-31 18:37:58,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:37:58,060 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:58,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 45 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-31 18:37:58,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 409. [2022-01-31 18:37:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 401 states have (on average 1.1571072319201996) internal successors, (464), 401 states have internal predecessors, (464), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 473 transitions. [2022-01-31 18:37:58,147 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 473 transitions. Word has length 896 [2022-01-31 18:37:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:58,148 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 473 transitions. [2022-01-31 18:37:58,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 473 transitions. [2022-01-31 18:37:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-01-31 18:37:58,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:58,152 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:58,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-31 18:37:58,152 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash 532579058, now seen corresponding path program 129 times [2022-01-31 18:37:58,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:58,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706562879] [2022-01-31 18:37:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:58,154 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:58,154 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:58,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:58,161 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2022-01-31 18:37:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:58,578 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:58,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706562879] [2022-01-31 18:37:58,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1706562879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:58,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:58,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 18:37:58,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563121388] [2022-01-31 18:37:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:58,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 18:37:58,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:58,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 18:37:58,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:37:58,579 INFO L87 Difference]: Start difference. First operand 409 states and 473 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:59,001 INFO L93 Difference]: Finished difference Result 663 states and 788 transitions. [2022-01-31 18:37:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 18:37:59,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 898 [2022-01-31 18:37:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:59,003 INFO L225 Difference]: With dead ends: 663 [2022-01-31 18:37:59,003 INFO L226 Difference]: Without dead ends: 412 [2022-01-31 18:37:59,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:37:59,004 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 50 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:59,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 60 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-31 18:37:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2022-01-31 18:37:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 403 states have (on average 1.1563275434243176) internal successors, (466), 403 states have internal predecessors, (466), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 475 transitions. [2022-01-31 18:37:59,152 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 475 transitions. Word has length 898 [2022-01-31 18:37:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:59,152 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 475 transitions. [2022-01-31 18:37:59,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 475 transitions. [2022-01-31 18:37:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2022-01-31 18:37:59,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:59,158 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:59,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-31 18:37:59,158 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:59,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:59,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1684443440, now seen corresponding path program 130 times [2022-01-31 18:37:59,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:59,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771023681] [2022-01-31 18:37:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:59,160 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:59,160 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:59,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:59,170 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:37:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:37:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:37:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:37:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2022-01-31 18:37:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:37:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:37:59,566 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:37:59,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771023681] [2022-01-31 18:37:59,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1771023681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:37:59,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:37:59,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 18:37:59,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238704272] [2022-01-31 18:37:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:37:59,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 18:37:59,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:37:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 18:37:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 18:37:59,567 INFO L87 Difference]: Start difference. First operand 411 states and 475 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:37:59,869 INFO L93 Difference]: Finished difference Result 665 states and 790 transitions. [2022-01-31 18:37:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:37:59,869 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 900 [2022-01-31 18:37:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:37:59,870 INFO L225 Difference]: With dead ends: 665 [2022-01-31 18:37:59,871 INFO L226 Difference]: Without dead ends: 414 [2022-01-31 18:37:59,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:37:59,871 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:37:59,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 55 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:37:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-31 18:37:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 413. [2022-01-31 18:37:59,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 405 states have (on average 1.1555555555555554) internal successors, (468), 405 states have internal predecessors, (468), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:37:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 477 transitions. [2022-01-31 18:37:59,963 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 477 transitions. Word has length 900 [2022-01-31 18:37:59,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:37:59,963 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 477 transitions. [2022-01-31 18:37:59,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:37:59,964 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 477 transitions. [2022-01-31 18:37:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-01-31 18:37:59,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:37:59,968 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:37:59,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-31 18:37:59,968 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:37:59,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:37:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1939285202, now seen corresponding path program 131 times [2022-01-31 18:37:59,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:37:59,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646130272] [2022-01-31 18:37:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:37:59,969 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:37:59,969 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:37:59,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:37:59,976 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2022-01-31 18:38:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:00,354 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:00,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646130272] [2022-01-31 18:38:00,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1646130272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:00,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:00,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 18:38:00,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970523070] [2022-01-31 18:38:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:00,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 18:38:00,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 18:38:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 18:38:00,355 INFO L87 Difference]: Start difference. First operand 413 states and 477 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:00,659 INFO L93 Difference]: Finished difference Result 667 states and 792 transitions. [2022-01-31 18:38:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 18:38:00,659 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 902 [2022-01-31 18:38:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:00,660 INFO L225 Difference]: With dead ends: 667 [2022-01-31 18:38:00,660 INFO L226 Difference]: Without dead ends: 416 [2022-01-31 18:38:00,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:38:00,661 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:00,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 45 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-01-31 18:38:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 415. [2022-01-31 18:38:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 407 states have (on average 1.1547911547911547) internal successors, (470), 407 states have internal predecessors, (470), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 479 transitions. [2022-01-31 18:38:00,749 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 479 transitions. Word has length 902 [2022-01-31 18:38:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:00,750 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 479 transitions. [2022-01-31 18:38:00,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 479 transitions. [2022-01-31 18:38:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2022-01-31 18:38:00,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:00,754 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:00,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-31 18:38:00,754 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2029082612, now seen corresponding path program 132 times [2022-01-31 18:38:00,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:00,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525663754] [2022-01-31 18:38:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:00,755 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:00,756 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:00,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:00,763 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2022-01-31 18:38:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:01,153 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525663754] [2022-01-31 18:38:01,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1525663754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:01,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:01,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 18:38:01,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137743457] [2022-01-31 18:38:01,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:01,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 18:38:01,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 18:38:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 18:38:01,154 INFO L87 Difference]: Start difference. First operand 415 states and 479 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:01,475 INFO L93 Difference]: Finished difference Result 669 states and 794 transitions. [2022-01-31 18:38:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 18:38:01,475 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 904 [2022-01-31 18:38:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:01,476 INFO L225 Difference]: With dead ends: 669 [2022-01-31 18:38:01,476 INFO L226 Difference]: Without dead ends: 418 [2022-01-31 18:38:01,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:38:01,477 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:01,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 45 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-31 18:38:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 417. [2022-01-31 18:38:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 409 states have (on average 1.1540342298288508) internal successors, (472), 409 states have internal predecessors, (472), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 481 transitions. [2022-01-31 18:38:01,564 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 481 transitions. Word has length 904 [2022-01-31 18:38:01,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:01,565 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 481 transitions. [2022-01-31 18:38:01,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 481 transitions. [2022-01-31 18:38:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2022-01-31 18:38:01,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:01,569 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:01,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-31 18:38:01,569 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1869919594, now seen corresponding path program 133 times [2022-01-31 18:38:01,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:01,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075755900] [2022-01-31 18:38:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:01,570 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:01,570 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:01,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:01,578 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2022-01-31 18:38:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:01,987 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:01,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075755900] [2022-01-31 18:38:01,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2075755900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:01,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:01,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 18:38:01,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494749596] [2022-01-31 18:38:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:01,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 18:38:01,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:01,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 18:38:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 18:38:01,988 INFO L87 Difference]: Start difference. First operand 417 states and 481 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:02,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:02,339 INFO L93 Difference]: Finished difference Result 671 states and 796 transitions. [2022-01-31 18:38:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 18:38:02,340 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 906 [2022-01-31 18:38:02,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:02,341 INFO L225 Difference]: With dead ends: 671 [2022-01-31 18:38:02,341 INFO L226 Difference]: Without dead ends: 420 [2022-01-31 18:38:02,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:38:02,342 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 58 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:02,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 55 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-31 18:38:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2022-01-31 18:38:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 411 states have (on average 1.1532846715328466) internal successors, (474), 411 states have internal predecessors, (474), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:02,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 483 transitions. [2022-01-31 18:38:02,449 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 483 transitions. Word has length 906 [2022-01-31 18:38:02,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:02,449 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 483 transitions. [2022-01-31 18:38:02,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 483 transitions. [2022-01-31 18:38:02,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2022-01-31 18:38:02,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:02,454 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:02,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-31 18:38:02,454 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:02,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:02,454 INFO L85 PathProgramCache]: Analyzing trace with hash -695409848, now seen corresponding path program 134 times [2022-01-31 18:38:02,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:02,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841504775] [2022-01-31 18:38:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:02,456 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:02,456 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:02,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:02,463 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2022-01-31 18:38:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:02,887 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:02,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841504775] [2022-01-31 18:38:02,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [841504775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:02,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:02,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 18:38:02,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815338964] [2022-01-31 18:38:02,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:02,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 18:38:02,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 18:38:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 18:38:02,888 INFO L87 Difference]: Start difference. First operand 419 states and 483 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:03,228 INFO L93 Difference]: Finished difference Result 673 states and 798 transitions. [2022-01-31 18:38:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 18:38:03,229 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 908 [2022-01-31 18:38:03,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:03,230 INFO L225 Difference]: With dead ends: 673 [2022-01-31 18:38:03,230 INFO L226 Difference]: Without dead ends: 422 [2022-01-31 18:38:03,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:38:03,231 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:03,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 45 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-31 18:38:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2022-01-31 18:38:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 413 states have (on average 1.152542372881356) internal successors, (476), 413 states have internal predecessors, (476), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 485 transitions. [2022-01-31 18:38:03,367 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 485 transitions. Word has length 908 [2022-01-31 18:38:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:03,368 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 485 transitions. [2022-01-31 18:38:03,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 485 transitions. [2022-01-31 18:38:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2022-01-31 18:38:03,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:03,374 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:03,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-31 18:38:03,375 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash -665775706, now seen corresponding path program 135 times [2022-01-31 18:38:03,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:03,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101565328] [2022-01-31 18:38:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:03,377 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:03,377 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:03,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:03,385 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:03,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:03,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2022-01-31 18:38:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:03,842 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:03,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101565328] [2022-01-31 18:38:03,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1101565328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:03,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:03,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 18:38:03,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168053521] [2022-01-31 18:38:03,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:03,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 18:38:03,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:03,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 18:38:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 18:38:03,843 INFO L87 Difference]: Start difference. First operand 421 states and 485 transitions. Second operand has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:04,212 INFO L93 Difference]: Finished difference Result 675 states and 800 transitions. [2022-01-31 18:38:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 18:38:04,212 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 910 [2022-01-31 18:38:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:04,213 INFO L225 Difference]: With dead ends: 675 [2022-01-31 18:38:04,213 INFO L226 Difference]: Without dead ends: 424 [2022-01-31 18:38:04,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:38:04,214 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:04,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 50 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-01-31 18:38:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 423. [2022-01-31 18:38:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 415 states have (on average 1.1518072289156627) internal successors, (478), 415 states have internal predecessors, (478), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 487 transitions. [2022-01-31 18:38:04,304 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 487 transitions. Word has length 910 [2022-01-31 18:38:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:04,304 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 487 transitions. [2022-01-31 18:38:04,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 487 transitions. [2022-01-31 18:38:04,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2022-01-31 18:38:04,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:04,308 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:04,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-31 18:38:04,308 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2042830980, now seen corresponding path program 136 times [2022-01-31 18:38:04,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:04,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187820971] [2022-01-31 18:38:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:04,310 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:04,310 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:04,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:04,319 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:04,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2022-01-31 18:38:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:04,778 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:04,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187820971] [2022-01-31 18:38:04,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1187820971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:04,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:04,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 18:38:04,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524436017] [2022-01-31 18:38:04,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:04,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 18:38:04,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 18:38:04,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 18:38:04,780 INFO L87 Difference]: Start difference. First operand 423 states and 487 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:05,155 INFO L93 Difference]: Finished difference Result 677 states and 802 transitions. [2022-01-31 18:38:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 18:38:05,155 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 912 [2022-01-31 18:38:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:05,156 INFO L225 Difference]: With dead ends: 677 [2022-01-31 18:38:05,156 INFO L226 Difference]: Without dead ends: 426 [2022-01-31 18:38:05,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 18:38:05,157 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 64 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:05,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 40 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-31 18:38:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2022-01-31 18:38:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 417 states have (on average 1.1510791366906474) internal successors, (480), 417 states have internal predecessors, (480), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 489 transitions. [2022-01-31 18:38:05,246 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 489 transitions. Word has length 912 [2022-01-31 18:38:05,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:05,247 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 489 transitions. [2022-01-31 18:38:05,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 489 transitions. [2022-01-31 18:38:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2022-01-31 18:38:05,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:05,251 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:05,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-31 18:38:05,251 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2031292446, now seen corresponding path program 137 times [2022-01-31 18:38:05,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:05,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635473445] [2022-01-31 18:38:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:05,252 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:05,253 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:05,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:05,260 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2022-01-31 18:38:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:05,749 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:05,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635473445] [2022-01-31 18:38:05,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1635473445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:05,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:05,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 18:38:05,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259523739] [2022-01-31 18:38:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:05,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 18:38:05,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 18:38:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 18:38:05,750 INFO L87 Difference]: Start difference. First operand 425 states and 489 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:06,165 INFO L93 Difference]: Finished difference Result 679 states and 804 transitions. [2022-01-31 18:38:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 18:38:06,166 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 914 [2022-01-31 18:38:06,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:06,167 INFO L225 Difference]: With dead ends: 679 [2022-01-31 18:38:06,167 INFO L226 Difference]: Without dead ends: 428 [2022-01-31 18:38:06,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 18:38:06,168 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:06,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 65 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:06,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-31 18:38:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2022-01-31 18:38:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 419 states have (on average 1.1503579952267302) internal successors, (482), 419 states have internal predecessors, (482), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 491 transitions. [2022-01-31 18:38:06,259 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 491 transitions. Word has length 914 [2022-01-31 18:38:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:06,259 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 491 transitions. [2022-01-31 18:38:06,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 491 transitions. [2022-01-31 18:38:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2022-01-31 18:38:06,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:06,263 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:06,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-31 18:38:06,264 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash -253730880, now seen corresponding path program 138 times [2022-01-31 18:38:06,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:06,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899333836] [2022-01-31 18:38:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:06,265 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:06,265 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:06,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:06,273 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2022-01-31 18:38:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:06,761 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:06,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899333836] [2022-01-31 18:38:06,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1899333836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:06,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:06,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 18:38:06,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739618760] [2022-01-31 18:38:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:06,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 18:38:06,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 18:38:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 18:38:06,762 INFO L87 Difference]: Start difference. First operand 427 states and 491 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:07,194 INFO L93 Difference]: Finished difference Result 681 states and 806 transitions. [2022-01-31 18:38:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 18:38:07,195 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 916 [2022-01-31 18:38:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:07,196 INFO L225 Difference]: With dead ends: 681 [2022-01-31 18:38:07,196 INFO L226 Difference]: Without dead ends: 430 [2022-01-31 18:38:07,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:38:07,197 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:07,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 45 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:07,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-31 18:38:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 429. [2022-01-31 18:38:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 421 states have (on average 1.149643705463183) internal successors, (484), 421 states have internal predecessors, (484), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 493 transitions. [2022-01-31 18:38:07,292 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 493 transitions. Word has length 916 [2022-01-31 18:38:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:07,292 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 493 transitions. [2022-01-31 18:38:07,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 493 transitions. [2022-01-31 18:38:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2022-01-31 18:38:07,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:07,296 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:07,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-31 18:38:07,297 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1414049762, now seen corresponding path program 139 times [2022-01-31 18:38:07,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559807399] [2022-01-31 18:38:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:07,298 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:07,298 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:07,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:07,306 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2022-01-31 18:38:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:07,819 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:07,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559807399] [2022-01-31 18:38:07,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1559807399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:07,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:07,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 18:38:07,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454866351] [2022-01-31 18:38:07,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:07,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 18:38:07,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:07,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 18:38:07,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 18:38:07,820 INFO L87 Difference]: Start difference. First operand 429 states and 493 transitions. Second operand has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 26 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:08,282 INFO L93 Difference]: Finished difference Result 683 states and 808 transitions. [2022-01-31 18:38:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 18:38:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 26 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 918 [2022-01-31 18:38:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:08,284 INFO L225 Difference]: With dead ends: 683 [2022-01-31 18:38:08,284 INFO L226 Difference]: Without dead ends: 432 [2022-01-31 18:38:08,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:38:08,285 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 70 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:08,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 45 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-31 18:38:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 431. [2022-01-31 18:38:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 423 states have (on average 1.148936170212766) internal successors, (486), 423 states have internal predecessors, (486), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 495 transitions. [2022-01-31 18:38:08,375 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 495 transitions. Word has length 918 [2022-01-31 18:38:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:08,375 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 495 transitions. [2022-01-31 18:38:08,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 26 states have internal predecessors, (67), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 495 transitions. [2022-01-31 18:38:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2022-01-31 18:38:08,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:08,380 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:08,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-31 18:38:08,380 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:08,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash 211001596, now seen corresponding path program 140 times [2022-01-31 18:38:08,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:08,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94347134] [2022-01-31 18:38:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:08,381 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:08,382 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:08,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:08,389 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2022-01-31 18:38:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:08,907 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:08,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94347134] [2022-01-31 18:38:08,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [94347134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:08,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:08,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 18:38:08,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230863416] [2022-01-31 18:38:08,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:08,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 18:38:08,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 18:38:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 18:38:08,908 INFO L87 Difference]: Start difference. First operand 431 states and 495 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:09,367 INFO L93 Difference]: Finished difference Result 685 states and 810 transitions. [2022-01-31 18:38:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 18:38:09,368 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 920 [2022-01-31 18:38:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:09,369 INFO L225 Difference]: With dead ends: 685 [2022-01-31 18:38:09,369 INFO L226 Difference]: Without dead ends: 434 [2022-01-31 18:38:09,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:38:09,370 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 72 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:09,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 45 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-31 18:38:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 433. [2022-01-31 18:38:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 425 states have (on average 1.148235294117647) internal successors, (488), 425 states have internal predecessors, (488), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 497 transitions. [2022-01-31 18:38:09,478 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 497 transitions. Word has length 920 [2022-01-31 18:38:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:09,478 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 497 transitions. [2022-01-31 18:38:09,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 497 transitions. [2022-01-31 18:38:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2022-01-31 18:38:09,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:09,483 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 25, 25, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:09,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-31 18:38:09,483 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1482739110, now seen corresponding path program 141 times [2022-01-31 18:38:09,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:09,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047743974] [2022-01-31 18:38:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:09,484 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:09,484 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:09,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:09,492 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2022-01-31 18:38:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:10,020 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:10,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047743974] [2022-01-31 18:38:10,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2047743974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:10,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:10,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 18:38:10,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924178481] [2022-01-31 18:38:10,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:10,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 18:38:10,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 18:38:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 18:38:10,021 INFO L87 Difference]: Start difference. First operand 433 states and 497 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:10,499 INFO L93 Difference]: Finished difference Result 687 states and 812 transitions. [2022-01-31 18:38:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 18:38:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 922 [2022-01-31 18:38:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:10,500 INFO L225 Difference]: With dead ends: 687 [2022-01-31 18:38:10,500 INFO L226 Difference]: Without dead ends: 436 [2022-01-31 18:38:10,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:38:10,501 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:10,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 45 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-31 18:38:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 435. [2022-01-31 18:38:10,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 427 states have (on average 1.1475409836065573) internal successors, (490), 427 states have internal predecessors, (490), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 499 transitions. [2022-01-31 18:38:10,593 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 499 transitions. Word has length 922 [2022-01-31 18:38:10,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:10,593 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 499 transitions. [2022-01-31 18:38:10,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 499 transitions. [2022-01-31 18:38:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2022-01-31 18:38:10,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:10,597 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 26, 26, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:10,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-31 18:38:10,598 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1374952392, now seen corresponding path program 142 times [2022-01-31 18:38:10,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:10,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985208510] [2022-01-31 18:38:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:10,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:10,599 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:10,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:10,607 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2022-01-31 18:38:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:11,189 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985208510] [2022-01-31 18:38:11,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [985208510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:11,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:11,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 18:38:11,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905424054] [2022-01-31 18:38:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:11,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 18:38:11,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 18:38:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 18:38:11,190 INFO L87 Difference]: Start difference. First operand 435 states and 499 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:11,813 INFO L93 Difference]: Finished difference Result 689 states and 814 transitions. [2022-01-31 18:38:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 18:38:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 924 [2022-01-31 18:38:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:11,814 INFO L225 Difference]: With dead ends: 689 [2022-01-31 18:38:11,814 INFO L226 Difference]: Without dead ends: 438 [2022-01-31 18:38:11,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:38:11,815 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 76 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:11,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 50 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-01-31 18:38:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 437. [2022-01-31 18:38:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 429 states have (on average 1.1468531468531469) internal successors, (492), 429 states have internal predecessors, (492), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 501 transitions. [2022-01-31 18:38:11,906 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 501 transitions. Word has length 924 [2022-01-31 18:38:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:11,907 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 501 transitions. [2022-01-31 18:38:11,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 501 transitions. [2022-01-31 18:38:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2022-01-31 18:38:11,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:11,911 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:11,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-31 18:38:11,911 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash -871131498, now seen corresponding path program 143 times [2022-01-31 18:38:11,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:11,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159423939] [2022-01-31 18:38:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:11,913 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:11,913 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:11,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:11,924 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:12,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2022-01-31 18:38:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:12,511 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:12,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159423939] [2022-01-31 18:38:12,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1159423939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:12,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:12,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 18:38:12,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262805014] [2022-01-31 18:38:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:12,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 18:38:12,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 18:38:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 18:38:12,512 INFO L87 Difference]: Start difference. First operand 437 states and 501 transitions. Second operand has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:13,047 INFO L93 Difference]: Finished difference Result 691 states and 816 transitions. [2022-01-31 18:38:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 18:38:13,047 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 926 [2022-01-31 18:38:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:13,049 INFO L225 Difference]: With dead ends: 691 [2022-01-31 18:38:13,049 INFO L226 Difference]: Without dead ends: 440 [2022-01-31 18:38:13,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:38:13,050 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 78 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:13,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 55 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-01-31 18:38:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2022-01-31 18:38:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 431 states have (on average 1.1461716937354989) internal successors, (494), 431 states have internal predecessors, (494), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 503 transitions. [2022-01-31 18:38:13,141 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 503 transitions. Word has length 926 [2022-01-31 18:38:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:13,142 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 503 transitions. [2022-01-31 18:38:13,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 503 transitions. [2022-01-31 18:38:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2022-01-31 18:38:13,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:13,146 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 28, 28, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:13,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-31 18:38:13,146 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2030556812, now seen corresponding path program 144 times [2022-01-31 18:38:13,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:13,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339955376] [2022-01-31 18:38:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:13,147 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:13,148 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:13,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:13,155 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2022-01-31 18:38:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:13,763 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:13,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339955376] [2022-01-31 18:38:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1339955376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:13,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 18:38:13,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27986830] [2022-01-31 18:38:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:13,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 18:38:13,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 18:38:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:38:13,764 INFO L87 Difference]: Start difference. First operand 439 states and 503 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:14,327 INFO L93 Difference]: Finished difference Result 693 states and 818 transitions. [2022-01-31 18:38:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 18:38:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 928 [2022-01-31 18:38:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:14,328 INFO L225 Difference]: With dead ends: 693 [2022-01-31 18:38:14,329 INFO L226 Difference]: Without dead ends: 442 [2022-01-31 18:38:14,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:38:14,330 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:14,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 55 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-01-31 18:38:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 441. [2022-01-31 18:38:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 433 states have (on average 1.1454965357967668) internal successors, (496), 433 states have internal predecessors, (496), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 505 transitions. [2022-01-31 18:38:14,422 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 505 transitions. Word has length 928 [2022-01-31 18:38:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:14,422 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 505 transitions. [2022-01-31 18:38:14,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 505 transitions. [2022-01-31 18:38:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2022-01-31 18:38:14,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:14,428 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 29, 29, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:14,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-31 18:38:14,428 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 453213394, now seen corresponding path program 145 times [2022-01-31 18:38:14,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393056598] [2022-01-31 18:38:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:14,430 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:14,430 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:14,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:14,441 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:14,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2022-01-31 18:38:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:15,066 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:15,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393056598] [2022-01-31 18:38:15,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1393056598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:15,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:15,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 18:38:15,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577595879] [2022-01-31 18:38:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:15,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 18:38:15,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 18:38:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 18:38:15,068 INFO L87 Difference]: Start difference. First operand 441 states and 505 transitions. Second operand has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:15,650 INFO L93 Difference]: Finished difference Result 695 states and 820 transitions. [2022-01-31 18:38:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 18:38:15,650 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 930 [2022-01-31 18:38:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:15,651 INFO L225 Difference]: With dead ends: 695 [2022-01-31 18:38:15,651 INFO L226 Difference]: Without dead ends: 444 [2022-01-31 18:38:15,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 18:38:15,652 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:15,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 45 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-31 18:38:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 443. [2022-01-31 18:38:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 435 states have (on average 1.1448275862068966) internal successors, (498), 435 states have internal predecessors, (498), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 507 transitions. [2022-01-31 18:38:15,794 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 507 transitions. Word has length 930 [2022-01-31 18:38:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:15,794 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 507 transitions. [2022-01-31 18:38:15,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 32 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 507 transitions. [2022-01-31 18:38:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2022-01-31 18:38:15,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:15,800 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:15,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-31 18:38:15,800 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash -645435216, now seen corresponding path program 146 times [2022-01-31 18:38:15,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:15,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473247398] [2022-01-31 18:38:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:15,802 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:15,802 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:15,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:15,813 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:16,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2022-01-31 18:38:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:16,470 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:16,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473247398] [2022-01-31 18:38:16,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [473247398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:16,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:16,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 18:38:16,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026074743] [2022-01-31 18:38:16,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:16,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 18:38:16,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 18:38:16,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 18:38:16,472 INFO L87 Difference]: Start difference. First operand 443 states and 507 transitions. Second operand has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:17,110 INFO L93 Difference]: Finished difference Result 697 states and 822 transitions. [2022-01-31 18:38:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 18:38:17,111 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 932 [2022-01-31 18:38:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:17,112 INFO L225 Difference]: With dead ends: 697 [2022-01-31 18:38:17,112 INFO L226 Difference]: Without dead ends: 446 [2022-01-31 18:38:17,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 18:38:17,113 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:17,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 55 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-31 18:38:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 445. [2022-01-31 18:38:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 437 states have (on average 1.1441647597254005) internal successors, (500), 437 states have internal predecessors, (500), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 509 transitions. [2022-01-31 18:38:17,205 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 509 transitions. Word has length 932 [2022-01-31 18:38:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:17,206 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 509 transitions. [2022-01-31 18:38:17,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 509 transitions. [2022-01-31 18:38:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2022-01-31 18:38:17,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:17,211 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 31, 31, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:17,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-31 18:38:17,211 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 115205390, now seen corresponding path program 147 times [2022-01-31 18:38:17,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:17,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721183765] [2022-01-31 18:38:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:17,212 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:17,212 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:17,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:17,221 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:17,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2022-01-31 18:38:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:17,880 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:17,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721183765] [2022-01-31 18:38:17,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1721183765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:17,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:17,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 18:38:17,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657555970] [2022-01-31 18:38:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:17,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 18:38:17,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 18:38:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 18:38:17,881 INFO L87 Difference]: Start difference. First operand 445 states and 509 transitions. Second operand has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 34 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:18,513 INFO L93 Difference]: Finished difference Result 699 states and 824 transitions. [2022-01-31 18:38:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 18:38:18,513 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 34 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 934 [2022-01-31 18:38:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:18,514 INFO L225 Difference]: With dead ends: 699 [2022-01-31 18:38:18,514 INFO L226 Difference]: Without dead ends: 448 [2022-01-31 18:38:18,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:38:18,515 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 86 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:18,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 40 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-31 18:38:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 447. [2022-01-31 18:38:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 439 states have (on average 1.143507972665148) internal successors, (502), 439 states have internal predecessors, (502), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 511 transitions. [2022-01-31 18:38:18,607 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 511 transitions. Word has length 934 [2022-01-31 18:38:18,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:18,607 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 511 transitions. [2022-01-31 18:38:18,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 34 states have internal predecessors, (83), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 511 transitions. [2022-01-31 18:38:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2022-01-31 18:38:18,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:18,612 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 32, 32, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:18,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-31 18:38:18,612 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:18,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash 946387436, now seen corresponding path program 148 times [2022-01-31 18:38:18,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:18,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422057973] [2022-01-31 18:38:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:18,613 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:18,613 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:18,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:18,621 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:19,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2022-01-31 18:38:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:19,312 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422057973] [2022-01-31 18:38:19,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [422057973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:19,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:19,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 18:38:19,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454684886] [2022-01-31 18:38:19,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:19,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 18:38:19,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 18:38:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 18:38:19,313 INFO L87 Difference]: Start difference. First operand 447 states and 511 transitions. Second operand has 36 states, 36 states have (on average 2.361111111111111) internal successors, (85), 35 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:19,971 INFO L93 Difference]: Finished difference Result 701 states and 826 transitions. [2022-01-31 18:38:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 18:38:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.361111111111111) internal successors, (85), 35 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 936 [2022-01-31 18:38:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:19,973 INFO L225 Difference]: With dead ends: 701 [2022-01-31 18:38:19,973 INFO L226 Difference]: Without dead ends: 450 [2022-01-31 18:38:19,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 18:38:19,975 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:19,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 55 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:19,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-31 18:38:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 449. [2022-01-31 18:38:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 441 states have (on average 1.1428571428571428) internal successors, (504), 441 states have internal predecessors, (504), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 513 transitions. [2022-01-31 18:38:20,143 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 513 transitions. Word has length 936 [2022-01-31 18:38:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:20,143 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 513 transitions. [2022-01-31 18:38:20,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.361111111111111) internal successors, (85), 35 states have internal predecessors, (85), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 513 transitions. [2022-01-31 18:38:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2022-01-31 18:38:20,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:20,149 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:20,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-31 18:38:20,149 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 848416586, now seen corresponding path program 149 times [2022-01-31 18:38:20,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:20,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026166208] [2022-01-31 18:38:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:20,151 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:20,151 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:20,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:20,162 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2022-01-31 18:38:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:20,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:20,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026166208] [2022-01-31 18:38:20,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2026166208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:20,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:20,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 18:38:20,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003565405] [2022-01-31 18:38:20,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:20,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 18:38:20,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:20,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 18:38:20,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 18:38:20,893 INFO L87 Difference]: Start difference. First operand 449 states and 513 transitions. Second operand has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 36 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:21,664 INFO L93 Difference]: Finished difference Result 703 states and 828 transitions. [2022-01-31 18:38:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 18:38:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 36 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 938 [2022-01-31 18:38:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:21,666 INFO L225 Difference]: With dead ends: 703 [2022-01-31 18:38:21,666 INFO L226 Difference]: Without dead ends: 452 [2022-01-31 18:38:21,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:38:21,667 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 90 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:21,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 55 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-01-31 18:38:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2022-01-31 18:38:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 443 states have (on average 1.142212189616253) internal successors, (506), 443 states have internal predecessors, (506), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 515 transitions. [2022-01-31 18:38:21,780 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 515 transitions. Word has length 938 [2022-01-31 18:38:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:21,780 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 515 transitions. [2022-01-31 18:38:21,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 36 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 515 transitions. [2022-01-31 18:38:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2022-01-31 18:38:21,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:21,785 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 34, 34, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:21,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-31 18:38:21,785 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1187710248, now seen corresponding path program 150 times [2022-01-31 18:38:21,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:21,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907272116] [2022-01-31 18:38:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:21,786 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:21,786 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:21,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:21,794 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2022-01-31 18:38:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:22,521 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:22,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907272116] [2022-01-31 18:38:22,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [907272116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:22,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:22,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 18:38:22,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3705170] [2022-01-31 18:38:22,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:22,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 18:38:22,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:22,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 18:38:22,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 18:38:22,522 INFO L87 Difference]: Start difference. First operand 451 states and 515 transitions. Second operand has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:23,316 INFO L93 Difference]: Finished difference Result 705 states and 830 transitions. [2022-01-31 18:38:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 18:38:23,316 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 940 [2022-01-31 18:38:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:23,317 INFO L225 Difference]: With dead ends: 705 [2022-01-31 18:38:23,317 INFO L226 Difference]: Without dead ends: 454 [2022-01-31 18:38:23,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:38:23,318 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 92 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:23,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 60 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-01-31 18:38:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 453. [2022-01-31 18:38:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 445 states have (on average 1.1415730337078651) internal successors, (508), 445 states have internal predecessors, (508), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 517 transitions. [2022-01-31 18:38:23,414 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 517 transitions. Word has length 940 [2022-01-31 18:38:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:23,414 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 517 transitions. [2022-01-31 18:38:23,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 517 transitions. [2022-01-31 18:38:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2022-01-31 18:38:23,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:23,418 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 35, 35, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:23,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-31 18:38:23,419 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:23,419 INFO L85 PathProgramCache]: Analyzing trace with hash 831404934, now seen corresponding path program 151 times [2022-01-31 18:38:23,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:23,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42729400] [2022-01-31 18:38:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:23,420 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:23,420 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:23,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:23,436 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:24,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2022-01-31 18:38:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:24,199 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:24,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42729400] [2022-01-31 18:38:24,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [42729400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:24,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:24,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 18:38:24,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500461183] [2022-01-31 18:38:24,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:24,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 18:38:24,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 18:38:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 18:38:24,201 INFO L87 Difference]: Start difference. First operand 453 states and 517 transitions. Second operand has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 38 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:24,946 INFO L93 Difference]: Finished difference Result 707 states and 832 transitions. [2022-01-31 18:38:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 18:38:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 38 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 942 [2022-01-31 18:38:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:24,948 INFO L225 Difference]: With dead ends: 707 [2022-01-31 18:38:24,948 INFO L226 Difference]: Without dead ends: 456 [2022-01-31 18:38:24,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:38:24,950 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 94 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:24,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 45 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:24,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-01-31 18:38:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 455. [2022-01-31 18:38:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 447 states have (on average 1.1409395973154361) internal successors, (510), 447 states have internal predecessors, (510), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 519 transitions. [2022-01-31 18:38:25,048 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 519 transitions. Word has length 942 [2022-01-31 18:38:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:25,048 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 519 transitions. [2022-01-31 18:38:25,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 38 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 519 transitions. [2022-01-31 18:38:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2022-01-31 18:38:25,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:25,053 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:25,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-31 18:38:25,053 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2019381860, now seen corresponding path program 152 times [2022-01-31 18:38:25,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:25,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918716731] [2022-01-31 18:38:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:25,054 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:25,054 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:25,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:25,063 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2022-01-31 18:38:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:25,853 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:25,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918716731] [2022-01-31 18:38:25,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [918716731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:25,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:25,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 18:38:25,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012687993] [2022-01-31 18:38:25,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:25,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 18:38:25,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 18:38:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 18:38:25,854 INFO L87 Difference]: Start difference. First operand 455 states and 519 transitions. Second operand has 40 states, 40 states have (on average 2.325) internal successors, (93), 39 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:26,637 INFO L93 Difference]: Finished difference Result 709 states and 834 transitions. [2022-01-31 18:38:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 18:38:26,637 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.325) internal successors, (93), 39 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 944 [2022-01-31 18:38:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:26,638 INFO L225 Difference]: With dead ends: 709 [2022-01-31 18:38:26,639 INFO L226 Difference]: Without dead ends: 458 [2022-01-31 18:38:26,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:38:26,640 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 96 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:26,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 50 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-01-31 18:38:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 457. [2022-01-31 18:38:26,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 449 states have (on average 1.1403118040089086) internal successors, (512), 449 states have internal predecessors, (512), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 521 transitions. [2022-01-31 18:38:26,737 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 521 transitions. Word has length 944 [2022-01-31 18:38:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:26,737 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 521 transitions. [2022-01-31 18:38:26,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.325) internal successors, (93), 39 states have internal predecessors, (93), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 521 transitions. [2022-01-31 18:38:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2022-01-31 18:38:26,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:26,742 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 37, 37, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:26,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-31 18:38:26,742 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1203907010, now seen corresponding path program 153 times [2022-01-31 18:38:26,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:26,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629983105] [2022-01-31 18:38:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:26,744 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:26,744 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:26,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:26,752 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:27,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2022-01-31 18:38:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:27,582 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:27,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629983105] [2022-01-31 18:38:27,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1629983105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:27,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:27,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 18:38:27,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908158448] [2022-01-31 18:38:27,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:27,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 18:38:27,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 18:38:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 18:38:27,583 INFO L87 Difference]: Start difference. First operand 457 states and 521 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:28,495 INFO L93 Difference]: Finished difference Result 711 states and 836 transitions. [2022-01-31 18:38:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 18:38:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 946 [2022-01-31 18:38:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:28,499 INFO L225 Difference]: With dead ends: 711 [2022-01-31 18:38:28,499 INFO L226 Difference]: Without dead ends: 460 [2022-01-31 18:38:28,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:38:28,501 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 98 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:28,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 60 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-31 18:38:28,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 459. [2022-01-31 18:38:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 451 states have (on average 1.139689578713969) internal successors, (514), 451 states have internal predecessors, (514), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 523 transitions. [2022-01-31 18:38:28,649 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 523 transitions. Word has length 946 [2022-01-31 18:38:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:28,649 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 523 transitions. [2022-01-31 18:38:28,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 523 transitions. [2022-01-31 18:38:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2022-01-31 18:38:28,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:28,655 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 38, 38, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:28,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-31 18:38:28,656 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:28,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -783375968, now seen corresponding path program 154 times [2022-01-31 18:38:28,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:28,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909963923] [2022-01-31 18:38:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:28,657 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:28,657 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:28,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:28,669 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2022-01-31 18:38:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:29,557 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:29,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909963923] [2022-01-31 18:38:29,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1909963923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:29,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:29,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 18:38:29,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715291363] [2022-01-31 18:38:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:29,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 18:38:29,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 18:38:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 18:38:29,559 INFO L87 Difference]: Start difference. First operand 459 states and 523 transitions. Second operand has 42 states, 42 states have (on average 2.3095238095238093) internal successors, (97), 41 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:30,427 INFO L93 Difference]: Finished difference Result 713 states and 838 transitions. [2022-01-31 18:38:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 18:38:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.3095238095238093) internal successors, (97), 41 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 948 [2022-01-31 18:38:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:30,428 INFO L225 Difference]: With dead ends: 713 [2022-01-31 18:38:30,428 INFO L226 Difference]: Without dead ends: 462 [2022-01-31 18:38:30,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:38:30,430 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 100 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:30,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 55 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-31 18:38:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2022-01-31 18:38:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 453 states have (on average 1.1390728476821192) internal successors, (516), 453 states have internal predecessors, (516), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 525 transitions. [2022-01-31 18:38:30,527 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 525 transitions. Word has length 948 [2022-01-31 18:38:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:30,527 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 525 transitions. [2022-01-31 18:38:30,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.3095238095238093) internal successors, (97), 41 states have internal predecessors, (97), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 525 transitions. [2022-01-31 18:38:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2022-01-31 18:38:30,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:30,533 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:30,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-31 18:38:30,533 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash 698128894, now seen corresponding path program 155 times [2022-01-31 18:38:30,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:30,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519158132] [2022-01-31 18:38:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:30,535 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:30,535 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:30,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:30,547 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2022-01-31 18:38:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:31,431 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:31,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519158132] [2022-01-31 18:38:31,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519158132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:31,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:31,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 18:38:31,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565242340] [2022-01-31 18:38:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:31,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 18:38:31,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 18:38:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 18:38:31,436 INFO L87 Difference]: Start difference. First operand 461 states and 525 transitions. Second operand has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 42 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:32,303 INFO L93 Difference]: Finished difference Result 715 states and 840 transitions. [2022-01-31 18:38:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 18:38:32,303 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 42 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 950 [2022-01-31 18:38:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:32,304 INFO L225 Difference]: With dead ends: 715 [2022-01-31 18:38:32,304 INFO L226 Difference]: Without dead ends: 464 [2022-01-31 18:38:32,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 18:38:32,306 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 102 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:32,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 45 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-31 18:38:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 463. [2022-01-31 18:38:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 455 states have (on average 1.1384615384615384) internal successors, (518), 455 states have internal predecessors, (518), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 527 transitions. [2022-01-31 18:38:32,424 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 527 transitions. Word has length 950 [2022-01-31 18:38:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:32,424 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 527 transitions. [2022-01-31 18:38:32,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 42 states have internal predecessors, (99), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 527 transitions. [2022-01-31 18:38:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2022-01-31 18:38:32,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:32,430 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 40, 40, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:32,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-31 18:38:32,431 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:32,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1504840996, now seen corresponding path program 156 times [2022-01-31 18:38:32,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:32,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350818403] [2022-01-31 18:38:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:32,433 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:32,433 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:32,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:32,446 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2022-01-31 18:38:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:33,356 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:33,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350818403] [2022-01-31 18:38:33,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [350818403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:33,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:33,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 18:38:33,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168433643] [2022-01-31 18:38:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:33,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 18:38:33,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 18:38:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 18:38:33,357 INFO L87 Difference]: Start difference. First operand 463 states and 527 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:34,282 INFO L93 Difference]: Finished difference Result 717 states and 842 transitions. [2022-01-31 18:38:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 18:38:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 952 [2022-01-31 18:38:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:34,283 INFO L225 Difference]: With dead ends: 717 [2022-01-31 18:38:34,283 INFO L226 Difference]: Without dead ends: 466 [2022-01-31 18:38:34,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:38:34,285 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:34,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 45 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-01-31 18:38:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 465. [2022-01-31 18:38:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 457 states have (on average 1.1378555798687089) internal successors, (520), 457 states have internal predecessors, (520), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:34,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 529 transitions. [2022-01-31 18:38:34,383 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 529 transitions. Word has length 952 [2022-01-31 18:38:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:34,383 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 529 transitions. [2022-01-31 18:38:34,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 529 transitions. [2022-01-31 18:38:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2022-01-31 18:38:34,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:34,388 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 41, 41, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:34,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-31 18:38:34,388 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1140028358, now seen corresponding path program 157 times [2022-01-31 18:38:34,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191471101] [2022-01-31 18:38:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:34,389 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:34,389 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:34,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:34,400 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2022-01-31 18:38:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:35,339 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:35,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191471101] [2022-01-31 18:38:35,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [191471101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:35,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:35,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 18:38:35,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336357392] [2022-01-31 18:38:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:35,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 18:38:35,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 18:38:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 18:38:35,341 INFO L87 Difference]: Start difference. First operand 465 states and 529 transitions. Second operand has 45 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 44 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:36,279 INFO L93 Difference]: Finished difference Result 719 states and 844 transitions. [2022-01-31 18:38:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 18:38:36,280 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 44 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 954 [2022-01-31 18:38:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:36,281 INFO L225 Difference]: With dead ends: 719 [2022-01-31 18:38:36,281 INFO L226 Difference]: Without dead ends: 468 [2022-01-31 18:38:36,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 18:38:36,282 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 106 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:36,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 45 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-01-31 18:38:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 467. [2022-01-31 18:38:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 459 states have (on average 1.1372549019607843) internal successors, (522), 459 states have internal predecessors, (522), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 531 transitions. [2022-01-31 18:38:36,432 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 531 transitions. Word has length 954 [2022-01-31 18:38:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:36,432 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 531 transitions. [2022-01-31 18:38:36,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 44 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 531 transitions. [2022-01-31 18:38:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-01-31 18:38:36,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:36,439 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:36,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-31 18:38:36,439 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1552565784, now seen corresponding path program 158 times [2022-01-31 18:38:36,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:36,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082926715] [2022-01-31 18:38:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:36,441 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:36,441 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:36,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:36,453 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2022-01-31 18:38:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:37,423 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:37,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082926715] [2022-01-31 18:38:37,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2082926715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:37,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:37,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 18:38:37,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780667367] [2022-01-31 18:38:37,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:37,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 18:38:37,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 18:38:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 18:38:37,425 INFO L87 Difference]: Start difference. First operand 467 states and 531 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 45 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:38,406 INFO L93 Difference]: Finished difference Result 721 states and 846 transitions. [2022-01-31 18:38:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 18:38:38,406 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 45 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 956 [2022-01-31 18:38:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:38,408 INFO L225 Difference]: With dead ends: 721 [2022-01-31 18:38:38,408 INFO L226 Difference]: Without dead ends: 470 [2022-01-31 18:38:38,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 18:38:38,409 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 108 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:38,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 55 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-01-31 18:38:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2022-01-31 18:38:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 461 states have (on average 1.1366594360086768) internal successors, (524), 461 states have internal predecessors, (524), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 533 transitions. [2022-01-31 18:38:38,508 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 533 transitions. Word has length 956 [2022-01-31 18:38:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:38,508 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 533 transitions. [2022-01-31 18:38:38,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 45 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 533 transitions. [2022-01-31 18:38:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2022-01-31 18:38:38,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:38,513 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 43, 43, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:38,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-31 18:38:38,513 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:38,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash -729743242, now seen corresponding path program 159 times [2022-01-31 18:38:38,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:38,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834532525] [2022-01-31 18:38:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:38,515 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:38,515 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:38,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:38,525 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2022-01-31 18:38:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:39,504 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:39,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834532525] [2022-01-31 18:38:39,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1834532525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:39,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:39,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 18:38:39,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27822873] [2022-01-31 18:38:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:39,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 18:38:39,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 18:38:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 18:38:39,505 INFO L87 Difference]: Start difference. First operand 469 states and 533 transitions. Second operand has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 46 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:40,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:40,523 INFO L93 Difference]: Finished difference Result 723 states and 848 transitions. [2022-01-31 18:38:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 18:38:40,523 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 46 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 958 [2022-01-31 18:38:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:40,524 INFO L225 Difference]: With dead ends: 723 [2022-01-31 18:38:40,524 INFO L226 Difference]: Without dead ends: 472 [2022-01-31 18:38:40,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:38:40,526 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 110 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:40,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 50 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-01-31 18:38:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 471. [2022-01-31 18:38:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 463 states have (on average 1.1360691144708424) internal successors, (526), 463 states have internal predecessors, (526), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 535 transitions. [2022-01-31 18:38:40,625 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 535 transitions. Word has length 958 [2022-01-31 18:38:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:40,626 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 535 transitions. [2022-01-31 18:38:40,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.276595744680851) internal successors, (107), 46 states have internal predecessors, (107), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 535 transitions. [2022-01-31 18:38:40,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2022-01-31 18:38:40,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:40,630 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 44, 44, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:40,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-31 18:38:40,631 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 699571028, now seen corresponding path program 160 times [2022-01-31 18:38:40,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:40,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129103512] [2022-01-31 18:38:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:40,632 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:40,632 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:40,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:40,643 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2022-01-31 18:38:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:41,658 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129103512] [2022-01-31 18:38:41,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [129103512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:41,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:41,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 18:38:41,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161093096] [2022-01-31 18:38:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:41,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 18:38:41,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 18:38:41,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 18:38:41,660 INFO L87 Difference]: Start difference. First operand 471 states and 535 transitions. Second operand has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:42,738 INFO L93 Difference]: Finished difference Result 725 states and 850 transitions. [2022-01-31 18:38:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 18:38:42,738 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 960 [2022-01-31 18:38:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:42,739 INFO L225 Difference]: With dead ends: 725 [2022-01-31 18:38:42,739 INFO L226 Difference]: Without dead ends: 474 [2022-01-31 18:38:42,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:38:42,741 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:42,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 55 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-31 18:38:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2022-01-31 18:38:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 465 states have (on average 1.135483870967742) internal successors, (528), 465 states have internal predecessors, (528), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 537 transitions. [2022-01-31 18:38:42,842 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 537 transitions. Word has length 960 [2022-01-31 18:38:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:42,842 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 537 transitions. [2022-01-31 18:38:42,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 537 transitions. [2022-01-31 18:38:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2022-01-31 18:38:42,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:42,848 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:42,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-31 18:38:42,848 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash -118950222, now seen corresponding path program 161 times [2022-01-31 18:38:42,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:42,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399085217] [2022-01-31 18:38:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:42,849 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:42,849 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:42,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:42,860 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:43,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2022-01-31 18:38:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:43,901 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:43,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399085217] [2022-01-31 18:38:43,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [399085217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:43,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:43,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 18:38:43,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883866491] [2022-01-31 18:38:43,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:43,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 18:38:43,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:43,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 18:38:43,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 18:38:43,903 INFO L87 Difference]: Start difference. First operand 473 states and 537 transitions. Second operand has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 48 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:44,963 INFO L93 Difference]: Finished difference Result 727 states and 852 transitions. [2022-01-31 18:38:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 18:38:44,963 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 48 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 962 [2022-01-31 18:38:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:44,965 INFO L225 Difference]: With dead ends: 727 [2022-01-31 18:38:44,965 INFO L226 Difference]: Without dead ends: 476 [2022-01-31 18:38:44,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 18:38:44,967 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 114 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:44,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 40 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-01-31 18:38:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2022-01-31 18:38:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 467 states have (on average 1.1349036402569592) internal successors, (530), 467 states have internal predecessors, (530), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 539 transitions. [2022-01-31 18:38:45,068 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 539 transitions. Word has length 962 [2022-01-31 18:38:45,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:45,069 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 539 transitions. [2022-01-31 18:38:45,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 48 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 539 transitions. [2022-01-31 18:38:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2022-01-31 18:38:45,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:45,074 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 46, 46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:45,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-31 18:38:45,074 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash -738856304, now seen corresponding path program 162 times [2022-01-31 18:38:45,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:45,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092455228] [2022-01-31 18:38:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:45,075 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:45,075 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:45,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:45,096 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:46,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:46,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2022-01-31 18:38:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:46,160 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092455228] [2022-01-31 18:38:46,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1092455228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:46,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:46,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 18:38:46,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137677746] [2022-01-31 18:38:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:46,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 18:38:46,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 18:38:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 18:38:46,162 INFO L87 Difference]: Start difference. First operand 475 states and 539 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:47,285 INFO L93 Difference]: Finished difference Result 729 states and 854 transitions. [2022-01-31 18:38:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 18:38:47,285 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 964 [2022-01-31 18:38:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:47,286 INFO L225 Difference]: With dead ends: 729 [2022-01-31 18:38:47,286 INFO L226 Difference]: Without dead ends: 478 [2022-01-31 18:38:47,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:38:47,288 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:47,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 55 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-01-31 18:38:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 477. [2022-01-31 18:38:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 469 states have (on average 1.1343283582089552) internal successors, (532), 469 states have internal predecessors, (532), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 541 transitions. [2022-01-31 18:38:47,416 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 541 transitions. Word has length 964 [2022-01-31 18:38:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:47,417 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 541 transitions. [2022-01-31 18:38:47,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 541 transitions. [2022-01-31 18:38:47,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2022-01-31 18:38:47,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:47,423 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 47, 47, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:47,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-31 18:38:47,423 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:47,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:47,423 INFO L85 PathProgramCache]: Analyzing trace with hash 531853038, now seen corresponding path program 163 times [2022-01-31 18:38:47,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:47,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758703359] [2022-01-31 18:38:47,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:47,425 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:47,425 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:47,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:47,440 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:48,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2022-01-31 18:38:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:48,537 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:48,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758703359] [2022-01-31 18:38:48,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1758703359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:48,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:48,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 18:38:48,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215064000] [2022-01-31 18:38:48,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:48,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 18:38:48,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:48,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 18:38:48,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 18:38:48,538 INFO L87 Difference]: Start difference. First operand 477 states and 541 transitions. Second operand has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 50 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:49,706 INFO L93 Difference]: Finished difference Result 731 states and 856 transitions. [2022-01-31 18:38:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 18:38:49,707 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 50 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 966 [2022-01-31 18:38:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:49,708 INFO L225 Difference]: With dead ends: 731 [2022-01-31 18:38:49,708 INFO L226 Difference]: Without dead ends: 480 [2022-01-31 18:38:49,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 18:38:49,710 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 118 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:49,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 55 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-01-31 18:38:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2022-01-31 18:38:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 471 states have (on average 1.1337579617834395) internal successors, (534), 471 states have internal predecessors, (534), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 543 transitions. [2022-01-31 18:38:49,834 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 543 transitions. Word has length 966 [2022-01-31 18:38:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:49,834 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 543 transitions. [2022-01-31 18:38:49,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 50 states have internal predecessors, (115), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 543 transitions. [2022-01-31 18:38:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2022-01-31 18:38:49,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:49,839 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:49,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-31 18:38:49,839 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1912818636, now seen corresponding path program 164 times [2022-01-31 18:38:49,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:49,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291166269] [2022-01-31 18:38:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:49,840 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:49,841 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:49,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:49,853 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:50,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:50,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2022-01-31 18:38:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:50,976 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:50,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291166269] [2022-01-31 18:38:50,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1291166269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:50,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:50,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 18:38:50,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366756157] [2022-01-31 18:38:50,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:50,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 18:38:50,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 18:38:50,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 18:38:50,978 INFO L87 Difference]: Start difference. First operand 479 states and 543 transitions. Second operand has 52 states, 52 states have (on average 2.25) internal successors, (117), 51 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:52,169 INFO L93 Difference]: Finished difference Result 733 states and 858 transitions. [2022-01-31 18:38:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 18:38:52,169 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.25) internal successors, (117), 51 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 968 [2022-01-31 18:38:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:52,170 INFO L225 Difference]: With dead ends: 733 [2022-01-31 18:38:52,170 INFO L226 Difference]: Without dead ends: 482 [2022-01-31 18:38:52,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:38:52,172 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 120 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:52,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 45 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-31 18:38:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 481. [2022-01-31 18:38:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 473 states have (on average 1.1331923890063424) internal successors, (536), 473 states have internal predecessors, (536), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 545 transitions. [2022-01-31 18:38:52,297 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 545 transitions. Word has length 968 [2022-01-31 18:38:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:52,298 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 545 transitions. [2022-01-31 18:38:52,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.25) internal successors, (117), 51 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 545 transitions. [2022-01-31 18:38:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-01-31 18:38:52,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:52,303 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 49, 49, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:52,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-31 18:38:52,303 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:52,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1875863850, now seen corresponding path program 165 times [2022-01-31 18:38:52,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:52,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082851060] [2022-01-31 18:38:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:52,304 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:52,304 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:52,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:52,316 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:53,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2022-01-31 18:38:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:53,488 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:53,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082851060] [2022-01-31 18:38:53,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2082851060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:53,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:53,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 18:38:53,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967085787] [2022-01-31 18:38:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:53,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 18:38:53,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 18:38:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 18:38:53,490 INFO L87 Difference]: Start difference. First operand 481 states and 545 transitions. Second operand has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:54,749 INFO L93 Difference]: Finished difference Result 735 states and 860 transitions. [2022-01-31 18:38:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 18:38:54,750 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 970 [2022-01-31 18:38:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:54,751 INFO L225 Difference]: With dead ends: 735 [2022-01-31 18:38:54,751 INFO L226 Difference]: Without dead ends: 484 [2022-01-31 18:38:54,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:38:54,752 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 122 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:54,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 55 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:38:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-31 18:38:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 483. [2022-01-31 18:38:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 475 states have (on average 1.1326315789473684) internal successors, (538), 475 states have internal predecessors, (538), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 547 transitions. [2022-01-31 18:38:54,905 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 547 transitions. Word has length 970 [2022-01-31 18:38:54,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:54,905 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 547 transitions. [2022-01-31 18:38:54,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 547 transitions. [2022-01-31 18:38:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2022-01-31 18:38:54,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:54,910 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 50, 50, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:54,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-31 18:38:54,910 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:54,910 INFO L85 PathProgramCache]: Analyzing trace with hash 722052872, now seen corresponding path program 166 times [2022-01-31 18:38:54,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:54,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950250982] [2022-01-31 18:38:54,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:54,911 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:54,911 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:54,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:54,922 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2022-01-31 18:38:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:56,115 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:56,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950250982] [2022-01-31 18:38:56,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1950250982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:56,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:56,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 18:38:56,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220877166] [2022-01-31 18:38:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:56,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 18:38:56,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 18:38:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 18:38:56,117 INFO L87 Difference]: Start difference. First operand 483 states and 547 transitions. Second operand has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:38:57,409 INFO L93 Difference]: Finished difference Result 737 states and 862 transitions. [2022-01-31 18:38:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 18:38:57,409 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 972 [2022-01-31 18:38:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:38:57,411 INFO L225 Difference]: With dead ends: 737 [2022-01-31 18:38:57,411 INFO L226 Difference]: Without dead ends: 486 [2022-01-31 18:38:57,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 18:38:57,412 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 124 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:38:57,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 65 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:38:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-31 18:38:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 485. [2022-01-31 18:38:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 477 states have (on average 1.1320754716981132) internal successors, (540), 477 states have internal predecessors, (540), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:38:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 549 transitions. [2022-01-31 18:38:57,516 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 549 transitions. Word has length 972 [2022-01-31 18:38:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:38:57,516 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 549 transitions. [2022-01-31 18:38:57,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:38:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 549 transitions. [2022-01-31 18:38:57,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2022-01-31 18:38:57,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:38:57,521 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:38:57,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-31 18:38:57,521 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:38:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:38:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash 11265382, now seen corresponding path program 167 times [2022-01-31 18:38:57,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:38:57,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381269326] [2022-01-31 18:38:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:38:57,523 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:38:57,523 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:38:57,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:38:57,534 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:38:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:58,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:38:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:38:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:38:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2022-01-31 18:38:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:38:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:38:58,782 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:38:58,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381269326] [2022-01-31 18:38:58,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [381269326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:38:58,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:38:58,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 18:38:58,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617545424] [2022-01-31 18:38:58,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:38:58,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 18:38:58,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:38:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 18:38:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 18:38:58,784 INFO L87 Difference]: Start difference. First operand 485 states and 549 transitions. Second operand has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:00,096 INFO L93 Difference]: Finished difference Result 739 states and 864 transitions. [2022-01-31 18:39:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 18:39:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 974 [2022-01-31 18:39:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:00,098 INFO L225 Difference]: With dead ends: 739 [2022-01-31 18:39:00,098 INFO L226 Difference]: Without dead ends: 488 [2022-01-31 18:39:00,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 18:39:00,099 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 126 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:00,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 50 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:39:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-01-31 18:39:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2022-01-31 18:39:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 479 states have (on average 1.1315240083507307) internal successors, (542), 479 states have internal predecessors, (542), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 551 transitions. [2022-01-31 18:39:00,204 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 551 transitions. Word has length 974 [2022-01-31 18:39:00,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:00,204 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 551 transitions. [2022-01-31 18:39:00,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2363636363636363) internal successors, (123), 54 states have internal predecessors, (123), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 551 transitions. [2022-01-31 18:39:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2022-01-31 18:39:00,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:00,209 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 52, 52, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:00,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-31 18:39:00,209 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash -155712444, now seen corresponding path program 168 times [2022-01-31 18:39:00,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:00,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549809636] [2022-01-31 18:39:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:00,210 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:00,211 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:00,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:00,221 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2022-01-31 18:39:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:39:01,467 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549809636] [2022-01-31 18:39:01,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549809636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:01,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:01,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 18:39:01,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571237530] [2022-01-31 18:39:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:01,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 18:39:01,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 18:39:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 18:39:01,469 INFO L87 Difference]: Start difference. First operand 487 states and 551 transitions. Second operand has 56 states, 56 states have (on average 2.232142857142857) internal successors, (125), 55 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:02,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:02,796 INFO L93 Difference]: Finished difference Result 741 states and 866 transitions. [2022-01-31 18:39:02,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 18:39:02,797 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.232142857142857) internal successors, (125), 55 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 976 [2022-01-31 18:39:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:02,798 INFO L225 Difference]: With dead ends: 741 [2022-01-31 18:39:02,798 INFO L226 Difference]: Without dead ends: 490 [2022-01-31 18:39:02,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:39:02,800 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 128 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:02,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 50 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:39:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-01-31 18:39:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 489. [2022-01-31 18:39:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 481 states have (on average 1.130977130977131) internal successors, (544), 481 states have internal predecessors, (544), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 553 transitions. [2022-01-31 18:39:02,904 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 553 transitions. Word has length 976 [2022-01-31 18:39:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:02,905 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 553 transitions. [2022-01-31 18:39:02,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.232142857142857) internal successors, (125), 55 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 553 transitions. [2022-01-31 18:39:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2022-01-31 18:39:02,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:02,909 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 53, 53, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:02,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-31 18:39:02,910 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:02,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1707613278, now seen corresponding path program 169 times [2022-01-31 18:39:02,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:02,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543255120] [2022-01-31 18:39:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:02,911 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:02,911 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:02,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:02,922 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2022-01-31 18:39:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:39:04,208 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:04,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543255120] [2022-01-31 18:39:04,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1543255120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:04,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:04,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 18:39:04,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431623279] [2022-01-31 18:39:04,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:04,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 18:39:04,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 18:39:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 18:39:04,210 INFO L87 Difference]: Start difference. First operand 489 states and 553 transitions. Second operand has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 56 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:05,598 INFO L93 Difference]: Finished difference Result 743 states and 868 transitions. [2022-01-31 18:39:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 18:39:05,599 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 56 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 978 [2022-01-31 18:39:05,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:05,600 INFO L225 Difference]: With dead ends: 743 [2022-01-31 18:39:05,600 INFO L226 Difference]: Without dead ends: 492 [2022-01-31 18:39:05,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 18:39:05,602 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 130 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:05,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 65 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:39:05,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-01-31 18:39:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2022-01-31 18:39:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 483 states have (on average 1.1304347826086956) internal successors, (546), 483 states have internal predecessors, (546), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 555 transitions. [2022-01-31 18:39:05,707 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 555 transitions. Word has length 978 [2022-01-31 18:39:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:05,707 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 555 transitions. [2022-01-31 18:39:05,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 56 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 555 transitions. [2022-01-31 18:39:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2022-01-31 18:39:05,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:05,712 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:05,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-31 18:39:05,712 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1564304256, now seen corresponding path program 170 times [2022-01-31 18:39:05,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:05,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810582616] [2022-01-31 18:39:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:05,714 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:05,714 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:05,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:05,724 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:06,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2022-01-31 18:39:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:39:07,034 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:07,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810582616] [2022-01-31 18:39:07,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [810582616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:07,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:07,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 18:39:07,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420897599] [2022-01-31 18:39:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:07,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 18:39:07,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 18:39:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 18:39:07,036 INFO L87 Difference]: Start difference. First operand 491 states and 555 transitions. Second operand has 58 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 57 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:08,445 INFO L93 Difference]: Finished difference Result 745 states and 870 transitions. [2022-01-31 18:39:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 18:39:08,446 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 57 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 980 [2022-01-31 18:39:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:08,447 INFO L225 Difference]: With dead ends: 745 [2022-01-31 18:39:08,447 INFO L226 Difference]: Without dead ends: 494 [2022-01-31 18:39:08,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:39:08,449 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 132 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:08,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 50 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:39:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-01-31 18:39:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 493. [2022-01-31 18:39:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 485 states have (on average 1.1298969072164948) internal successors, (548), 485 states have internal predecessors, (548), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 557 transitions. [2022-01-31 18:39:08,573 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 557 transitions. Word has length 980 [2022-01-31 18:39:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:08,574 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 557 transitions. [2022-01-31 18:39:08,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 57 states have internal predecessors, (129), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 557 transitions. [2022-01-31 18:39:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2022-01-31 18:39:08,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:08,579 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 55, 55, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:08,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-31 18:39:08,579 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1960993758, now seen corresponding path program 171 times [2022-01-31 18:39:08,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:08,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782677585] [2022-01-31 18:39:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:08,581 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:08,581 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:08,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:08,595 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2022-01-31 18:39:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:39:09,947 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:09,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782677585] [2022-01-31 18:39:09,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1782677585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:09,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:09,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 18:39:09,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686265607] [2022-01-31 18:39:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:09,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 18:39:09,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 18:39:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 18:39:09,949 INFO L87 Difference]: Start difference. First operand 493 states and 557 transitions. Second operand has 59 states, 59 states have (on average 2.2203389830508473) internal successors, (131), 58 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:11,402 INFO L93 Difference]: Finished difference Result 747 states and 872 transitions. [2022-01-31 18:39:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 18:39:11,403 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2203389830508473) internal successors, (131), 58 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 982 [2022-01-31 18:39:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:11,404 INFO L225 Difference]: With dead ends: 747 [2022-01-31 18:39:11,404 INFO L226 Difference]: Without dead ends: 496 [2022-01-31 18:39:11,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:39:11,406 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 134 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:11,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 50 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:39:11,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-01-31 18:39:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 495. [2022-01-31 18:39:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 487 states have (on average 1.1293634496919918) internal successors, (550), 487 states have internal predecessors, (550), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 559 transitions. [2022-01-31 18:39:11,531 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 559 transitions. Word has length 982 [2022-01-31 18:39:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:11,532 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 559 transitions. [2022-01-31 18:39:11,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2203389830508473) internal successors, (131), 58 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 559 transitions. [2022-01-31 18:39:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2022-01-31 18:39:11,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:11,536 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 56, 56, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:11,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-31 18:39:11,537 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:11,537 INFO L85 PathProgramCache]: Analyzing trace with hash 927515836, now seen corresponding path program 172 times [2022-01-31 18:39:11,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:11,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623037808] [2022-01-31 18:39:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:11,538 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:11,538 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:11,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:11,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2022-01-31 18:39:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:39:12,948 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623037808] [2022-01-31 18:39:12,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [623037808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:12,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:12,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 18:39:12,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75400657] [2022-01-31 18:39:12,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:12,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 18:39:12,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 18:39:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 18:39:12,950 INFO L87 Difference]: Start difference. First operand 495 states and 559 transitions. Second operand has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:14,447 INFO L93 Difference]: Finished difference Result 749 states and 874 transitions. [2022-01-31 18:39:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 18:39:14,448 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 984 [2022-01-31 18:39:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:14,449 INFO L225 Difference]: With dead ends: 749 [2022-01-31 18:39:14,449 INFO L226 Difference]: Without dead ends: 498 [2022-01-31 18:39:14,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:39:14,450 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 136 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:14,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 60 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:39:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-01-31 18:39:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 497. [2022-01-31 18:39:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 489 states have (on average 1.1288343558282208) internal successors, (552), 489 states have internal predecessors, (552), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 561 transitions. [2022-01-31 18:39:14,558 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 561 transitions. Word has length 984 [2022-01-31 18:39:14,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:14,559 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 561 transitions. [2022-01-31 18:39:14,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.216666666666667) internal successors, (133), 59 states have internal predecessors, (133), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 561 transitions. [2022-01-31 18:39:14,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2022-01-31 18:39:14,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:14,563 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:14,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-31 18:39:14,563 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -107321830, now seen corresponding path program 173 times [2022-01-31 18:39:14,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784228582] [2022-01-31 18:39:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:14,565 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:14,565 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:14,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:14,575 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2022-01-31 18:39:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:39:15,977 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784228582] [2022-01-31 18:39:15,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1784228582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:15,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:15,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 18:39:15,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898743936] [2022-01-31 18:39:15,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:15,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 18:39:15,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 18:39:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 18:39:15,979 INFO L87 Difference]: Start difference. First operand 497 states and 561 transitions. Second operand has 61 states, 61 states have (on average 2.2131147540983607) internal successors, (135), 60 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:17,528 INFO L93 Difference]: Finished difference Result 751 states and 876 transitions. [2022-01-31 18:39:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 18:39:17,528 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.2131147540983607) internal successors, (135), 60 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 986 [2022-01-31 18:39:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:17,529 INFO L225 Difference]: With dead ends: 751 [2022-01-31 18:39:17,529 INFO L226 Difference]: Without dead ends: 500 [2022-01-31 18:39:17,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 18:39:17,531 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 138 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:17,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 45 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:39:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-01-31 18:39:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2022-01-31 18:39:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 491 states have (on average 1.1283095723014256) internal successors, (554), 491 states have internal predecessors, (554), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 563 transitions. [2022-01-31 18:39:17,641 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 563 transitions. Word has length 986 [2022-01-31 18:39:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:17,641 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 563 transitions. [2022-01-31 18:39:17,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.2131147540983607) internal successors, (135), 60 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 563 transitions. [2022-01-31 18:39:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2022-01-31 18:39:17,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:17,646 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 58, 58, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:17,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-31 18:39:17,646 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1846093816, now seen corresponding path program 174 times [2022-01-31 18:39:17,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484782398] [2022-01-31 18:39:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:17,648 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:17,648 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:17,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:17,658 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2022-01-31 18:39:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-01-31 18:39:19,127 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:19,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484782398] [2022-01-31 18:39:19,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [484782398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:19,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:19,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 18:39:19,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310584418] [2022-01-31 18:39:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:19,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 18:39:19,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 18:39:19,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 18:39:19,129 INFO L87 Difference]: Start difference. First operand 499 states and 563 transitions. Second operand has 62 states, 62 states have (on average 2.2096774193548385) internal successors, (137), 61 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:20,732 INFO L93 Difference]: Finished difference Result 752 states and 877 transitions. [2022-01-31 18:39:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 18:39:20,733 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.2096774193548385) internal successors, (137), 61 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 988 [2022-01-31 18:39:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:20,734 INFO L225 Difference]: With dead ends: 752 [2022-01-31 18:39:20,734 INFO L226 Difference]: Without dead ends: 501 [2022-01-31 18:39:20,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:39:20,736 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 139 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:20,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 50 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:39:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-01-31 18:39:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2022-01-31 18:39:20,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 493 states have (on average 1.127789046653144) internal successors, (556), 493 states have internal predecessors, (556), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 565 transitions. [2022-01-31 18:39:20,844 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 565 transitions. Word has length 988 [2022-01-31 18:39:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:20,844 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 565 transitions. [2022-01-31 18:39:20,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.2096774193548385) internal successors, (137), 61 states have internal predecessors, (137), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 18:39:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 565 transitions. [2022-01-31 18:39:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-01-31 18:39:20,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:20,849 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 60, 60, 59, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:20,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-31 18:39:20,849 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2117146026, now seen corresponding path program 175 times [2022-01-31 18:39:20,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:20,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624039899] [2022-01-31 18:39:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:20,851 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:20,851 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:20,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:20,862 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2022-01-31 18:39:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 488 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-01-31 18:39:25,425 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:39:25,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624039899] [2022-01-31 18:39:25,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [624039899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:39:25,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:39:25,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 18:39:25,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632124321] [2022-01-31 18:39:25,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:39:25,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 18:39:25,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:39:25,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 18:39:25,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-01-31 18:39:25,426 INFO L87 Difference]: Start difference. First operand 501 states and 565 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:39:26,263 INFO L93 Difference]: Finished difference Result 1121 states and 1308 transitions. [2022-01-31 18:39:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 18:39:26,263 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 990 [2022-01-31 18:39:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:39:26,281 INFO L225 Difference]: With dead ends: 1121 [2022-01-31 18:39:26,281 INFO L226 Difference]: Without dead ends: 750 [2022-01-31 18:39:26,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-01-31 18:39:26,284 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 73 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:39:26,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 63 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:39:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-01-31 18:39:26,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 741. [2022-01-31 18:39:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 731 states have (on average 1.1668946648426812) internal successors, (853), 732 states have internal predecessors, (853), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-31 18:39:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 867 transitions. [2022-01-31 18:39:26,619 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 867 transitions. Word has length 990 [2022-01-31 18:39:26,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:39:26,620 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 867 transitions. [2022-01-31 18:39:26,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:39:26,620 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 867 transitions. [2022-01-31 18:39:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-01-31 18:39:26,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:39:26,628 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 179, 60, 60, 59, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:39:26,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-01-31 18:39:26,629 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:39:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:39:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1362416216, now seen corresponding path program 1 times [2022-01-31 18:39:26,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:39:26,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657737078] [2022-01-31 18:39:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:39:26,631 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:39:26,631 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:39:26,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:39:26,647 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:39:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:39:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:39:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:42,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:39:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:39:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2022-01-31 18:39:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:40:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 6 proven. 240 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-31 18:40:24,921 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:40:24,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657737078] [2022-01-31 18:40:24,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [657737078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:40:24,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:40:24,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [368] imperfect sequences [] total 368 [2022-01-31 18:40:24,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736050380] [2022-01-31 18:40:24,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:40:24,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 368 states [2022-01-31 18:40:24,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:40:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 368 interpolants. [2022-01-31 18:40:24,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2634, Invalid=132422, Unknown=0, NotChecked=0, Total=135056 [2022-01-31 18:40:24,929 INFO L87 Difference]: Start difference. First operand 741 states and 867 transitions. Second operand has 368 states, 367 states have (on average 1.4032697547683923) internal successors, (515), 366 states have internal predecessors, (515), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:41:55,702 INFO L93 Difference]: Finished difference Result 1935 states and 2315 transitions. [2022-01-31 18:41:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 372 states. [2022-01-31 18:41:55,702 INFO L78 Accepts]: Start accepts. Automaton has has 368 states, 367 states have (on average 1.4032697547683923) internal successors, (515), 366 states have internal predecessors, (515), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 990 [2022-01-31 18:41:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:41:55,710 INFO L225 Difference]: With dead ends: 1935 [2022-01-31 18:41:55,710 INFO L226 Difference]: Without dead ends: 1931 [2022-01-31 18:41:55,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 735 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160866 ImplicationChecksByTransitivity, 86.6s TimeCoverageRelationStatistics Valid=9007, Invalid=533425, Unknown=0, NotChecked=0, Total=542432 [2022-01-31 18:41:55,747 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 477 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 134076 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 134337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 134076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.7s IncrementalHoareTripleChecker+Time [2022-01-31 18:41:55,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 989 Invalid, 134337 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [261 Valid, 134076 Invalid, 0 Unknown, 0 Unchecked, 49.7s Time] [2022-01-31 18:41:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-01-31 18:41:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1797. [2022-01-31 18:41:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1780 states have (on average 1.199438202247191) internal successors, (2135), 1785 states have internal predecessors, (2135), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35) [2022-01-31 18:41:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2179 transitions. [2022-01-31 18:41:56,546 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2179 transitions. Word has length 990 [2022-01-31 18:41:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:41:56,547 INFO L470 AbstractCegarLoop]: Abstraction has 1797 states and 2179 transitions. [2022-01-31 18:41:56,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 368 states, 367 states have (on average 1.4032697547683923) internal successors, (515), 366 states have internal predecessors, (515), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:41:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2179 transitions. [2022-01-31 18:41:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-01-31 18:41:56,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:41:56,559 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 178, 60, 60, 59, 59, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:41:56,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-31 18:41:56,559 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:41:56,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:41:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash 969389206, now seen corresponding path program 2 times [2022-01-31 18:41:56,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:41:56,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636049025] [2022-01-31 18:41:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:41:56,561 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:41:56,561 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:41:56,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:41:56,576 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:42:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:42:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:42:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:42:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:43:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2022-01-31 18:43:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:43:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-31 18:43:28,552 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:43:28,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636049025] [2022-01-31 18:43:28,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [636049025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:43:28,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:43:28,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [444] imperfect sequences [] total 444 [2022-01-31 18:43:28,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924742356] [2022-01-31 18:43:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:43:28,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 444 states [2022-01-31 18:43:28,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:43:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 444 interpolants. [2022-01-31 18:43:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=195314, Unknown=0, NotChecked=0, Total=196692 [2022-01-31 18:43:28,566 INFO L87 Difference]: Start difference. First operand 1797 states and 2179 transitions. Second operand has 444 states, 443 states have (on average 1.690744920993228) internal successors, (749), 440 states have internal predecessors, (749), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:45:17,035 INFO L93 Difference]: Finished difference Result 2475 states and 3017 transitions. [2022-01-31 18:45:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 451 states. [2022-01-31 18:45:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 444 states, 443 states have (on average 1.690744920993228) internal successors, (749), 440 states have internal predecessors, (749), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 990 [2022-01-31 18:45:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:45:17,049 INFO L225 Difference]: With dead ends: 2475 [2022-01-31 18:45:17,049 INFO L226 Difference]: Without dead ends: 2471 [2022-01-31 18:45:17,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 890 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223668 ImplicationChecksByTransitivity, 118.4s TimeCoverageRelationStatistics Valid=4536, Invalid=790236, Unknown=0, NotChecked=0, Total=794772 [2022-01-31 18:45:17,113 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 942 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 147196 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 147685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 147196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time [2022-01-31 18:45:17,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 1176 Invalid, 147685 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [489 Valid, 147196 Invalid, 0 Unknown, 0 Unchecked, 50.6s Time] [2022-01-31 18:45:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2022-01-31 18:45:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2225. [2022-01-31 18:45:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2198 states have (on average 1.1960873521383075) internal successors, (2629), 2211 states have internal predecessors, (2629), 11 states have call successors, (11), 3 states have call predecessors, (11), 15 states have return successors, (97), 10 states have call predecessors, (97), 10 states have call successors, (97) [2022-01-31 18:45:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2737 transitions. [2022-01-31 18:45:17,995 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2737 transitions. Word has length 990 [2022-01-31 18:45:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:45:17,996 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 2737 transitions. [2022-01-31 18:45:17,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 444 states, 443 states have (on average 1.690744920993228) internal successors, (749), 440 states have internal predecessors, (749), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 18:45:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2737 transitions. [2022-01-31 18:45:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-01-31 18:45:18,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:45:18,011 INFO L514 BasicCegarLoop]: trace histogram [180, 180, 180, 178, 60, 60, 59, 59, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:45:18,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-31 18:45:18,011 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:45:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:45:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash 351298966, now seen corresponding path program 3 times [2022-01-31 18:45:18,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:45:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694175228] [2022-01-31 18:45:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:45:18,013 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:45:18,013 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:45:18,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:45:18,029 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:45:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:45:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:30,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 18:45:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:31,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 18:45:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:45:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2022-01-31 18:45:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat