/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 17:58:31,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 17:58:31,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 17:58:31,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 17:58:31,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 17:58:31,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 17:58:31,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 17:58:31,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 17:58:31,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 17:58:31,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 17:58:31,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 17:58:31,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 17:58:31,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 17:58:31,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 17:58:31,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 17:58:31,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 17:58:31,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 17:58:31,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 17:58:31,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 17:58:31,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 17:58:31,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 17:58:31,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 17:58:31,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 17:58:31,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 17:58:31,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 17:58:31,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 17:58:31,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 17:58:31,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 17:58:31,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 17:58:31,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 17:58:31,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 17:58:31,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 17:58:31,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 17:58:31,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 17:58:31,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 17:58:31,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 17:58:31,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 17:58:31,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 17:58:31,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 17:58:31,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 17:58:31,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 17:58:31,170 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 17:58:31,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 17:58:31,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 17:58:31,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 17:58:31,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 17:58:31,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 17:58:31,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 17:58:31,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 17:58:31,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 17:58:31,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 17:58:31,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 17:58:31,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 17:58:31,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 17:58:31,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 17:58:31,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 17:58:31,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 17:58:31,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 17:58:31,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 17:58:31,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 17:58:31,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 17:58:31,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 17:58:31,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 17:58:31,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 17:58:31,182 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 17:58:31,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 17:58:31,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 17:58:31,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 17:58:31,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 17:58:31,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 17:58:31,471 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 17:58:31,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2022-01-31 17:58:31,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e24592fb/c598bdeb719a49d4acc9a1a0b68a8e67/FLAG6320f4350 [2022-01-31 17:58:31,918 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 17:58:31,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c [2022-01-31 17:58:31,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e24592fb/c598bdeb719a49d4acc9a1a0b68a8e67/FLAG6320f4350 [2022-01-31 17:58:32,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e24592fb/c598bdeb719a49d4acc9a1a0b68a8e67 [2022-01-31 17:58:32,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 17:58:32,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 17:58:32,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 17:58:32,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 17:58:32,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 17:58:32,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b4c90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32, skipping insertion in model container [2022-01-31 17:58:32,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 17:58:32,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 17:58:32,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2022-01-31 17:58:32,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 17:58:32,488 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 17:58:32,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2022-01-31 17:58:32,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 17:58:32,530 INFO L208 MainTranslator]: Completed translation [2022-01-31 17:58:32,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32 WrapperNode [2022-01-31 17:58:32,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 17:58:32,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 17:58:32,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 17:58:32,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 17:58:32,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 17:58:32,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 17:58:32,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 17:58:32,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 17:58:32,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (1/1) ... [2022-01-31 17:58:32,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 17:58:32,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 17:58:32,616 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 17:58:32,645 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 17:58:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 17:58:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 17:58:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 17:58:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 17:58:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 17:58:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 17:58:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 17:58:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 17:58:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 17:58:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 17:58:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 17:58:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 17:58:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 17:58:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 17:58:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 17:58:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 17:58:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 17:58:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 17:58:32,720 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 17:58:32,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 17:58:32,843 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 17:58:32,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 17:58:32,848 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 17:58:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:58:32 BoogieIcfgContainer [2022-01-31 17:58:32,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 17:58:32,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 17:58:32,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 17:58:32,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 17:58:32,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:58:32" (1/3) ... [2022-01-31 17:58:32,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8430771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:58:32, skipping insertion in model container [2022-01-31 17:58:32,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:58:32" (2/3) ... [2022-01-31 17:58:32,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8430771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:58:32, skipping insertion in model container [2022-01-31 17:58:32,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:58:32" (3/3) ... [2022-01-31 17:58:32,859 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_sentinel.i.v+cfa-reducer.c [2022-01-31 17:58:32,863 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 17:58:32,863 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 17:58:32,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 17:58:32,921 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 17:58:32,921 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 17:58:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 17:58:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 17:58:32,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:32,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:32,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1754979163, now seen corresponding path program 1 times [2022-01-31 17:58:32,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:32,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118300060] [2022-01-31 17:58:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:32,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:33,005 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:33,213 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:33,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118300060] [2022-01-31 17:58:33,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [118300060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:33,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:33,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 17:58:33,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061406422] [2022-01-31 17:58:33,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:33,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 17:58:33,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 17:58:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 17:58:33,254 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:33,337 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2022-01-31 17:58:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 17:58:33,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-01-31 17:58:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:33,349 INFO L225 Difference]: With dead ends: 34 [2022-01-31 17:58:33,350 INFO L226 Difference]: Without dead ends: 17 [2022-01-31 17:58:33,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 17:58:33,359 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:33,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-31 17:58:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-01-31 17:58:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-01-31 17:58:33,403 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2022-01-31 17:58:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:33,404 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-01-31 17:58:33,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-01-31 17:58:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 17:58:33,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:33,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:33,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 17:58:33,406 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1376538279, now seen corresponding path program 1 times [2022-01-31 17:58:33,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:33,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249285414] [2022-01-31 17:58:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:33,428 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:33,429 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:33,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:33,433 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:33,519 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:33,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249285414] [2022-01-31 17:58:33,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [249285414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:33,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:33,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 17:58:33,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941939449] [2022-01-31 17:58:33,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:33,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 17:58:33,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 17:58:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 17:58:33,522 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:33,582 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-01-31 17:58:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 17:58:33,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 17:58:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:33,585 INFO L225 Difference]: With dead ends: 26 [2022-01-31 17:58:33,585 INFO L226 Difference]: Without dead ends: 19 [2022-01-31 17:58:33,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 17:58:33,590 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:33,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 26 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:33,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-31 17:58:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-01-31 17:58:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-01-31 17:58:33,604 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2022-01-31 17:58:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:33,605 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-01-31 17:58:33,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-01-31 17:58:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 17:58:33,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:33,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:33,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 17:58:33,606 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash 7274455, now seen corresponding path program 2 times [2022-01-31 17:58:33,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:33,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784505844] [2022-01-31 17:58:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:33,611 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:33,611 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:33,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:33,613 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:33,702 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:33,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784505844] [2022-01-31 17:58:33,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [784505844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:33,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:33,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 17:58:33,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220342136] [2022-01-31 17:58:33,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:33,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 17:58:33,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:33,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 17:58:33,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 17:58:33,707 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:33,808 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-01-31 17:58:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 17:58:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-01-31 17:58:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:33,809 INFO L225 Difference]: With dead ends: 23 [2022-01-31 17:58:33,809 INFO L226 Difference]: Without dead ends: 20 [2022-01-31 17:58:33,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-31 17:58:33,811 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:33,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 29 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-31 17:58:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-31 17:58:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-31 17:58:33,816 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2022-01-31 17:58:33,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:33,817 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-31 17:58:33,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-31 17:58:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 17:58:33,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:33,818 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:33,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 17:58:33,818 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1601271558, now seen corresponding path program 1 times [2022-01-31 17:58:33,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:33,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242032793] [2022-01-31 17:58:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:33,822 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:33,822 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:33,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:33,823 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:33,888 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:33,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242032793] [2022-01-31 17:58:33,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1242032793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:33,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:33,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 17:58:33,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928340372] [2022-01-31 17:58:33,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:33,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 17:58:33,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:33,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 17:58:33,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 17:58:33,889 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:33,964 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-01-31 17:58:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 17:58:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-01-31 17:58:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:33,966 INFO L225 Difference]: With dead ends: 32 [2022-01-31 17:58:33,966 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 17:58:33,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 17:58:33,967 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 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 17:58:33,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 17:58:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-01-31 17:58:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-01-31 17:58:33,973 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2022-01-31 17:58:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:33,973 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-01-31 17:58:33,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-01-31 17:58:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 17:58:33,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:33,974 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:33,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 17:58:33,974 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1885181832, now seen corresponding path program 2 times [2022-01-31 17:58:33,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:33,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316514259] [2022-01-31 17:58:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:33,981 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:33,981 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:33,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:33,982 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:34,077 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:34,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316514259] [2022-01-31 17:58:34,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [316514259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:34,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:34,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 17:58:34,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311034739] [2022-01-31 17:58:34,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:34,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 17:58:34,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 17:58:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-31 17:58:34,079 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:34,186 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-01-31 17:58:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 17:58:34,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-01-31 17:58:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:34,188 INFO L225 Difference]: With dead ends: 34 [2022-01-31 17:58:34,188 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 17:58:34,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-31 17:58:34,189 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:34,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 36 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 17:58:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-01-31 17:58:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-01-31 17:58:34,195 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2022-01-31 17:58:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:34,195 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-01-31 17:58:34,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-01-31 17:58:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 17:58:34,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:34,196 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:34,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 17:58:34,197 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:34,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash 154951798, now seen corresponding path program 3 times [2022-01-31 17:58:34,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:34,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312344290] [2022-01-31 17:58:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:34,200 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:34,200 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:34,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:34,201 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:34,321 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:34,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312344290] [2022-01-31 17:58:34,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1312344290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:34,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:34,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 17:58:34,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910776523] [2022-01-31 17:58:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:34,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 17:58:34,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 17:58:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 17:58:34,323 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:34,424 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-01-31 17:58:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 17:58:34,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-01-31 17:58:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:34,425 INFO L225 Difference]: With dead ends: 36 [2022-01-31 17:58:34,425 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 17:58:34,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 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 17:58:34,427 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:34,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 17:58:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-01-31 17:58:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-01-31 17:58:34,433 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2022-01-31 17:58:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:34,434 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-01-31 17:58:34,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-01-31 17:58:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 17:58:34,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:34,435 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:34,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 17:58:34,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:34,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:34,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2076684044, now seen corresponding path program 4 times [2022-01-31 17:58:34,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:34,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868991934] [2022-01-31 17:58:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:34,438 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:34,438 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:34,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:34,439 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:34,514 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:34,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868991934] [2022-01-31 17:58:34,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1868991934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:34,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:34,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 17:58:34,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738459663] [2022-01-31 17:58:34,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:34,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 17:58:34,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 17:58:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-31 17:58:34,516 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:34,620 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-01-31 17:58:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 17:58:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-01-31 17:58:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:34,621 INFO L225 Difference]: With dead ends: 38 [2022-01-31 17:58:34,621 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 17:58:34,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 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 17:58:34,623 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:34,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 17:58:34,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-31 17:58:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-01-31 17:58:34,629 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 25 [2022-01-31 17:58:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:34,629 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-01-31 17:58:34,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-01-31 17:58:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 17:58:34,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:34,630 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:34,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 17:58:34,631 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash 804919794, now seen corresponding path program 5 times [2022-01-31 17:58:34,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:34,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439123132] [2022-01-31 17:58:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:34,634 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:34,634 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:34,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:34,635 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:34,716 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:34,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439123132] [2022-01-31 17:58:34,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1439123132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:34,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:34,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 17:58:34,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278689852] [2022-01-31 17:58:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:34,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 17:58:34,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 17:58:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-01-31 17:58:34,718 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:34,841 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-01-31 17:58:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 17:58:34,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-01-31 17:58:34,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:34,842 INFO L225 Difference]: With dead ends: 40 [2022-01-31 17:58:34,842 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 17:58:34,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 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 17:58:34,843 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:34,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 17:58:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-01-31 17:58:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-01-31 17:58:34,865 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2022-01-31 17:58:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:34,869 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-01-31 17:58:34,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-01-31 17:58:34,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 17:58:34,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:34,870 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:34,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 17:58:34,870 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:34,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:34,871 INFO L85 PathProgramCache]: Analyzing trace with hash -227697808, now seen corresponding path program 6 times [2022-01-31 17:58:34,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:34,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114715959] [2022-01-31 17:58:34,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:34,879 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:34,879 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:34,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:34,881 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:34,966 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:34,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114715959] [2022-01-31 17:58:34,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2114715959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:34,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:34,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 17:58:34,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367253241] [2022-01-31 17:58:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:34,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 17:58:34,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 17:58:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-31 17:58:34,968 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:35,110 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-01-31 17:58:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 17:58:35,111 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-01-31 17:58:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:35,111 INFO L225 Difference]: With dead ends: 42 [2022-01-31 17:58:35,111 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 17:58:35,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 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 17:58:35,112 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:35,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 36 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 17:58:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-31 17:58:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-01-31 17:58:35,120 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2022-01-31 17:58:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:35,120 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-01-31 17:58:35,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-01-31 17:58:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-31 17:58:35,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:35,121 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:35,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 17:58:35,121 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash -435767954, now seen corresponding path program 7 times [2022-01-31 17:58:35,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:35,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020236859] [2022-01-31 17:58:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:35,124 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:35,124 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:35,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:35,125 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:35,219 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020236859] [2022-01-31 17:58:35,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2020236859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:35,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:35,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 17:58:35,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189734106] [2022-01-31 17:58:35,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:35,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 17:58:35,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 17:58:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-01-31 17:58:35,221 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:35,370 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-01-31 17:58:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 17:58:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-01-31 17:58:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:35,371 INFO L225 Difference]: With dead ends: 44 [2022-01-31 17:58:35,371 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 17:58:35,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 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 17:58:35,373 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:35,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 31 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 17:58:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-01-31 17:58:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-01-31 17:58:35,388 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 31 [2022-01-31 17:58:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:35,389 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-01-31 17:58:35,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-01-31 17:58:35,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 17:58:35,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:35,398 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:35,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 17:58:35,399 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:35,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:35,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1472284652, now seen corresponding path program 8 times [2022-01-31 17:58:35,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:35,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902412182] [2022-01-31 17:58:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:35,405 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:35,406 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:35,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:35,408 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:35,545 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902412182] [2022-01-31 17:58:35,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [902412182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:35,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:35,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 17:58:35,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34422476] [2022-01-31 17:58:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:35,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 17:58:35,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 17:58:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-01-31 17:58:35,547 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:35,724 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-01-31 17:58:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 17:58:35,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-01-31 17:58:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:35,727 INFO L225 Difference]: With dead ends: 46 [2022-01-31 17:58:35,727 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 17:58:35,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 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 17:58:35,728 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:35,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 17:58:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-01-31 17:58:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-01-31 17:58:35,744 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 33 [2022-01-31 17:58:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:35,744 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-01-31 17:58:35,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-01-31 17:58:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 17:58:35,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:35,747 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:35,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 17:58:35,747 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:35,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1159803626, now seen corresponding path program 9 times [2022-01-31 17:58:35,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:35,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304295806] [2022-01-31 17:58:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:35,752 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:35,752 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:35,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:35,753 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:35,896 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:35,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304295806] [2022-01-31 17:58:35,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [304295806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:35,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:35,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 17:58:35,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560442486] [2022-01-31 17:58:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:35,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 17:58:35,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 17:58:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 17:58:35,898 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:36,080 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2022-01-31 17:58:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 17:58:36,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-01-31 17:58:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:36,081 INFO L225 Difference]: With dead ends: 48 [2022-01-31 17:58:36,081 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 17:58:36,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 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 17:58:36,082 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:36,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 21 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 17:58:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-01-31 17:58:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-01-31 17:58:36,089 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2022-01-31 17:58:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:36,089 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-01-31 17:58:36,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,090 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-01-31 17:58:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 17:58:36,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:36,090 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:36,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 17:58:36,091 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:36,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1513248360, now seen corresponding path program 10 times [2022-01-31 17:58:36,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:36,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116390257] [2022-01-31 17:58:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:36,093 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:36,093 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:36,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:36,094 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:36,234 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:36,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116390257] [2022-01-31 17:58:36,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [116390257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:36,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:36,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 17:58:36,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464790916] [2022-01-31 17:58:36,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:36,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 17:58:36,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:36,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 17:58:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-01-31 17:58:36,240 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:36,443 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2022-01-31 17:58:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 17:58:36,443 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-01-31 17:58:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:36,444 INFO L225 Difference]: With dead ends: 50 [2022-01-31 17:58:36,444 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 17:58:36,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 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 17:58:36,445 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:36,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 26 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 17:58:36,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 17:58:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2022-01-31 17:58:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-01-31 17:58:36,452 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 37 [2022-01-31 17:58:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:36,452 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-01-31 17:58:36,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-01-31 17:58:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 17:58:36,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:36,453 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:36,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 17:58:36,453 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1871221350, now seen corresponding path program 11 times [2022-01-31 17:58:36,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:36,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916743800] [2022-01-31 17:58:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:36,456 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:36,456 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:36,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:36,457 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:36,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:36,601 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:36,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916743800] [2022-01-31 17:58:36,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [916743800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:36,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:36,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 17:58:36,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445987958] [2022-01-31 17:58:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:36,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 17:58:36,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 17:58:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 17:58:36,603 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:36,841 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-01-31 17:58:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 17:58:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-01-31 17:58:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:36,842 INFO L225 Difference]: With dead ends: 52 [2022-01-31 17:58:36,842 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 17:58:36,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2022-01-31 17:58:36,844 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:36,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 31 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 17:58:36,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-01-31 17:58:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-01-31 17:58:36,851 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2022-01-31 17:58:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:36,851 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-01-31 17:58:36,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-01-31 17:58:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-31 17:58:36,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:36,851 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:36,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 17:58:36,852 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2009086236, now seen corresponding path program 12 times [2022-01-31 17:58:36,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:36,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200950782] [2022-01-31 17:58:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:36,854 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:36,854 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:36,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:36,856 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:37,037 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:37,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200950782] [2022-01-31 17:58:37,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [200950782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:37,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:37,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 17:58:37,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375147603] [2022-01-31 17:58:37,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:37,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 17:58:37,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 17:58:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2022-01-31 17:58:37,039 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:37,299 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-01-31 17:58:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 17:58:37,300 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-01-31 17:58:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:37,300 INFO L225 Difference]: With dead ends: 54 [2022-01-31 17:58:37,300 INFO L226 Difference]: Without dead ends: 45 [2022-01-31 17:58:37,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2022-01-31 17:58:37,301 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:37,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 41 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-31 17:58:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2022-01-31 17:58:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2022-01-31 17:58:37,308 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 41 [2022-01-31 17:58:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:37,308 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2022-01-31 17:58:37,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2022-01-31 17:58:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 17:58:37,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:37,310 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:37,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 17:58:37,311 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1341903842, now seen corresponding path program 13 times [2022-01-31 17:58:37,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:37,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051317299] [2022-01-31 17:58:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:37,315 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:37,315 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:37,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:37,317 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:37,470 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:37,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051317299] [2022-01-31 17:58:37,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1051317299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:37,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:37,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-31 17:58:37,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760249121] [2022-01-31 17:58:37,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:37,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 17:58:37,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:37,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 17:58:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-01-31 17:58:37,471 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:37,739 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2022-01-31 17:58:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 17:58:37,740 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-01-31 17:58:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:37,740 INFO L225 Difference]: With dead ends: 56 [2022-01-31 17:58:37,740 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 17:58:37,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 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 17:58:37,741 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:37,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 31 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 17:58:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-01-31 17:58:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-01-31 17:58:37,747 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 43 [2022-01-31 17:58:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-01-31 17:58:37,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-01-31 17:58:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 17:58:37,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:37,748 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:37,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 17:58:37,748 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 417896800, now seen corresponding path program 14 times [2022-01-31 17:58:37,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:37,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438230861] [2022-01-31 17:58:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:37,750 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:37,750 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:37,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:37,752 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:37,944 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:37,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438230861] [2022-01-31 17:58:37,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1438230861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:37,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:37,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 17:58:37,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287106467] [2022-01-31 17:58:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:37,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 17:58:37,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:37,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 17:58:37,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2022-01-31 17:58:37,946 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:38,230 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2022-01-31 17:58:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 17:58:38,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-01-31 17:58:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:38,232 INFO L225 Difference]: With dead ends: 58 [2022-01-31 17:58:38,232 INFO L226 Difference]: Without dead ends: 49 [2022-01-31 17:58:38,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 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 17:58:38,233 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:38,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 46 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-31 17:58:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-01-31 17:58:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-01-31 17:58:38,240 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 45 [2022-01-31 17:58:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:38,240 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-01-31 17:58:38,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-01-31 17:58:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 17:58:38,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:38,241 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:38,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 17:58:38,241 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1505359710, now seen corresponding path program 15 times [2022-01-31 17:58:38,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:38,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752526528] [2022-01-31 17:58:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:38,244 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:38,244 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:38,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:38,245 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:38,428 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:38,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752526528] [2022-01-31 17:58:38,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1752526528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:38,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:38,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-31 17:58:38,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523795969] [2022-01-31 17:58:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:38,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 17:58:38,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 17:58:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2022-01-31 17:58:38,430 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:38,755 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2022-01-31 17:58:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 17:58:38,756 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-01-31 17:58:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:38,756 INFO L225 Difference]: With dead ends: 60 [2022-01-31 17:58:38,756 INFO L226 Difference]: Without dead ends: 51 [2022-01-31 17:58:38,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 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 17:58:38,757 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:38,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 41 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-31 17:58:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-01-31 17:58:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-01-31 17:58:38,765 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 47 [2022-01-31 17:58:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:38,765 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-01-31 17:58:38,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-01-31 17:58:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 17:58:38,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:38,765 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:38,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 17:58:38,766 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1414804004, now seen corresponding path program 16 times [2022-01-31 17:58:38,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:38,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995602080] [2022-01-31 17:58:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:38,768 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:38,768 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:38,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:38,770 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:38,976 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:38,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995602080] [2022-01-31 17:58:38,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [995602080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:38,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:38,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-31 17:58:38,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197219603] [2022-01-31 17:58:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:38,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 17:58:38,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 17:58:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2022-01-31 17:58:38,977 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:39,294 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-01-31 17:58:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 17:58:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-01-31 17:58:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:39,295 INFO L225 Difference]: With dead ends: 62 [2022-01-31 17:58:39,295 INFO L226 Difference]: Without dead ends: 53 [2022-01-31 17:58:39,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 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 17:58:39,297 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:39,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 36 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-31 17:58:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-01-31 17:58:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2022-01-31 17:58:39,307 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 49 [2022-01-31 17:58:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:39,307 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2022-01-31 17:58:39,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2022-01-31 17:58:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 17:58:39,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:39,308 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:39,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 17:58:39,308 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1216478426, now seen corresponding path program 17 times [2022-01-31 17:58:39,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:39,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205308428] [2022-01-31 17:58:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:39,319 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:39,319 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:39,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:39,320 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:39,551 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205308428] [2022-01-31 17:58:39,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1205308428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:39,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:39,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-31 17:58:39,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629442308] [2022-01-31 17:58:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:39,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 17:58:39,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 17:58:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2022-01-31 17:58:39,553 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:39,905 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2022-01-31 17:58:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 17:58:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-01-31 17:58:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:39,906 INFO L225 Difference]: With dead ends: 64 [2022-01-31 17:58:39,906 INFO L226 Difference]: Without dead ends: 55 [2022-01-31 17:58:39,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 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 17:58:39,907 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:39,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 46 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-31 17:58:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2022-01-31 17:58:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2022-01-31 17:58:39,914 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 51 [2022-01-31 17:58:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:39,915 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2022-01-31 17:58:39,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 21 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2022-01-31 17:58:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 17:58:39,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:39,915 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:39,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 17:58:39,916 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 143156312, now seen corresponding path program 18 times [2022-01-31 17:58:39,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:39,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476978078] [2022-01-31 17:58:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:39,918 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:39,918 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:39,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:39,921 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:40,156 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:40,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476978078] [2022-01-31 17:58:40,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1476978078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:40,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:40,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-31 17:58:40,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493492095] [2022-01-31 17:58:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:40,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 17:58:40,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 17:58:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2022-01-31 17:58:40,158 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:40,502 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2022-01-31 17:58:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 17:58:40,503 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-01-31 17:58:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:40,503 INFO L225 Difference]: With dead ends: 66 [2022-01-31 17:58:40,503 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 17:58:40,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 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 17:58:40,504 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 51 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:40,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 31 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 17:58:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-01-31 17:58:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-01-31 17:58:40,513 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 53 [2022-01-31 17:58:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:40,513 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-01-31 17:58:40,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-01-31 17:58:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 17:58:40,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:40,513 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:40,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 17:58:40,514 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:40,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash -527244202, now seen corresponding path program 19 times [2022-01-31 17:58:40,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:40,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718162399] [2022-01-31 17:58:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:40,516 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:40,516 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:40,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:40,518 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:40,766 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:40,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718162399] [2022-01-31 17:58:40,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1718162399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:40,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:40,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-31 17:58:40,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107077750] [2022-01-31 17:58:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:40,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 17:58:40,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:40,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 17:58:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2022-01-31 17:58:40,768 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:41,126 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2022-01-31 17:58:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 17:58:41,135 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-01-31 17:58:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:41,136 INFO L225 Difference]: With dead ends: 68 [2022-01-31 17:58:41,136 INFO L226 Difference]: Without dead ends: 59 [2022-01-31 17:58:41,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 17:58:41,138 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:41,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 31 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-31 17:58:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-01-31 17:58:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-01-31 17:58:41,146 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 55 [2022-01-31 17:58:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:41,147 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-01-31 17:58:41,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-01-31 17:58:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 17:58:41,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:41,147 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:41,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 17:58:41,147 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash -537043756, now seen corresponding path program 20 times [2022-01-31 17:58:41,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:41,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426195683] [2022-01-31 17:58:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:41,151 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:41,151 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:41,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:41,153 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:41,420 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:41,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426195683] [2022-01-31 17:58:41,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1426195683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:41,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:41,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-31 17:58:41,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634945502] [2022-01-31 17:58:41,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:41,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 17:58:41,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 17:58:41,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-01-31 17:58:41,422 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 25 states, 25 states have (on average 2.12) internal successors, (53), 24 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:41,812 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-01-31 17:58:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 17:58:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.12) internal successors, (53), 24 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-01-31 17:58:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:41,813 INFO L225 Difference]: With dead ends: 70 [2022-01-31 17:58:41,813 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 17:58:41,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 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 17:58:41,814 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 55 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:41,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 36 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 17:58:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2022-01-31 17:58:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-01-31 17:58:41,822 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 57 [2022-01-31 17:58:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:41,822 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-01-31 17:58:41,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.12) internal successors, (53), 24 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-01-31 17:58:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 17:58:41,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:41,823 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:41,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 17:58:41,823 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1364480558, now seen corresponding path program 21 times [2022-01-31 17:58:41,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:41,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960592206] [2022-01-31 17:58:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:41,825 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:41,825 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:41,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:41,827 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:42,093 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:42,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960592206] [2022-01-31 17:58:42,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [960592206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:42,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:42,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-31 17:58:42,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165067619] [2022-01-31 17:58:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:42,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 17:58:42,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 17:58:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-01-31 17:58:42,095 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:42,504 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2022-01-31 17:58:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 17:58:42,504 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-01-31 17:58:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:42,505 INFO L225 Difference]: With dead ends: 72 [2022-01-31 17:58:42,505 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 17:58:42,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 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 17:58:42,507 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:42,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 41 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 17:58:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-01-31 17:58:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2022-01-31 17:58:42,518 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 59 [2022-01-31 17:58:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:42,519 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2022-01-31 17:58:42,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2022-01-31 17:58:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 17:58:42,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:42,519 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:42,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 17:58:42,520 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1962297520, now seen corresponding path program 22 times [2022-01-31 17:58:42,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:42,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996683069] [2022-01-31 17:58:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:42,522 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:42,522 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:42,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:42,523 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:42,864 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:42,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996683069] [2022-01-31 17:58:42,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [996683069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:42,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:42,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-31 17:58:42,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561229371] [2022-01-31 17:58:42,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:42,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 17:58:42,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 17:58:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2022-01-31 17:58:42,866 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:43,356 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2022-01-31 17:58:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 17:58:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-01-31 17:58:43,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:43,358 INFO L225 Difference]: With dead ends: 74 [2022-01-31 17:58:43,358 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 17:58:43,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 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 17:58:43,359 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:43,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 36 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 17:58:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2022-01-31 17:58:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-01-31 17:58:43,369 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 61 [2022-01-31 17:58:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:43,369 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-01-31 17:58:43,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-01-31 17:58:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 17:58:43,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:43,370 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:43,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 17:58:43,370 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:43,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:43,370 INFO L85 PathProgramCache]: Analyzing trace with hash -938780338, now seen corresponding path program 23 times [2022-01-31 17:58:43,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:43,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102462692] [2022-01-31 17:58:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:43,372 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:43,373 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:43,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:43,374 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:43,683 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:43,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102462692] [2022-01-31 17:58:43,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1102462692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:43,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:43,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-31 17:58:43,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344211605] [2022-01-31 17:58:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:43,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 17:58:43,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 17:58:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2022-01-31 17:58:43,684 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:44,162 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2022-01-31 17:58:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 17:58:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-01-31 17:58:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:44,162 INFO L225 Difference]: With dead ends: 76 [2022-01-31 17:58:44,162 INFO L226 Difference]: Without dead ends: 67 [2022-01-31 17:58:44,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 17:58:44,164 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 61 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:44,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 36 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-31 17:58:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2022-01-31 17:58:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-01-31 17:58:44,173 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 63 [2022-01-31 17:58:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:44,174 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-01-31 17:58:44,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-01-31 17:58:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 17:58:44,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:44,174 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:44,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 17:58:44,174 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:44,175 INFO L85 PathProgramCache]: Analyzing trace with hash -886279220, now seen corresponding path program 24 times [2022-01-31 17:58:44,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:44,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132694749] [2022-01-31 17:58:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:44,177 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:44,177 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:44,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:44,178 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:44,525 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:44,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132694749] [2022-01-31 17:58:44,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1132694749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:44,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:44,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-31 17:58:44,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617612465] [2022-01-31 17:58:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:44,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 17:58:44,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 17:58:44,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2022-01-31 17:58:44,527 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 28 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:45,037 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2022-01-31 17:58:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 17:58:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 28 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-01-31 17:58:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:45,038 INFO L225 Difference]: With dead ends: 78 [2022-01-31 17:58:45,038 INFO L226 Difference]: Without dead ends: 69 [2022-01-31 17:58:45,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 17:58:45,041 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:45,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 41 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-31 17:58:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-01-31 17:58:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2022-01-31 17:58:45,052 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 65 [2022-01-31 17:58:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:45,053 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2022-01-31 17:58:45,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 28 states have internal predecessors, (61), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2022-01-31 17:58:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-31 17:58:45,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:45,053 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:45,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 17:58:45,054 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1972312374, now seen corresponding path program 25 times [2022-01-31 17:58:45,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:45,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474932094] [2022-01-31 17:58:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:45,058 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:45,059 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:45,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:45,061 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:45,437 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:45,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474932094] [2022-01-31 17:58:45,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1474932094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:45,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:45,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-01-31 17:58:45,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670511815] [2022-01-31 17:58:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:45,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 17:58:45,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:45,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 17:58:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 17:58:45,439 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:45,997 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2022-01-31 17:58:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 17:58:45,997 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-01-31 17:58:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:45,997 INFO L225 Difference]: With dead ends: 80 [2022-01-31 17:58:45,998 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 17:58:45,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 17:58:45,999 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 65 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:45,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 36 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 17:58:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2022-01-31 17:58:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-01-31 17:58:46,023 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 67 [2022-01-31 17:58:46,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:46,023 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-01-31 17:58:46,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-01-31 17:58:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 17:58:46,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:46,024 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:46,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 17:58:46,024 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:46,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:46,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1973120440, now seen corresponding path program 26 times [2022-01-31 17:58:46,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:46,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21501808] [2022-01-31 17:58:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:46,027 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:46,027 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:46,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:46,028 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:46,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:46,426 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:46,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21501808] [2022-01-31 17:58:46,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [21501808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:46,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:46,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-31 17:58:46,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176210913] [2022-01-31 17:58:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:46,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 17:58:46,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:46,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 17:58:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2022-01-31 17:58:46,428 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:46,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:46,944 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2022-01-31 17:58:46,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 17:58:46,944 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-01-31 17:58:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:46,945 INFO L225 Difference]: With dead ends: 82 [2022-01-31 17:58:46,945 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 17:58:46,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 17:58:46,946 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:46,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 36 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:46,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 17:58:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2022-01-31 17:58:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-01-31 17:58:46,957 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 69 [2022-01-31 17:58:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:46,957 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-01-31 17:58:46,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-01-31 17:58:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-31 17:58:46,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:46,958 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:46,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 17:58:46,958 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1545295430, now seen corresponding path program 27 times [2022-01-31 17:58:46,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:46,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856508422] [2022-01-31 17:58:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:46,960 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:46,960 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:46,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:46,962 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:47,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:47,338 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:47,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856508422] [2022-01-31 17:58:47,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1856508422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:47,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:47,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-31 17:58:47,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167774903] [2022-01-31 17:58:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:47,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 17:58:47,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 17:58:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2022-01-31 17:58:47,339 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:47,971 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2022-01-31 17:58:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 17:58:47,971 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-01-31 17:58:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:47,972 INFO L225 Difference]: With dead ends: 84 [2022-01-31 17:58:47,972 INFO L226 Difference]: Without dead ends: 75 [2022-01-31 17:58:47,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 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 17:58:47,973 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 69 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:47,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 41 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-31 17:58:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-01-31 17:58:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-01-31 17:58:47,985 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 71 [2022-01-31 17:58:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:47,985 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-01-31 17:58:47,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 31 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:47,985 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-01-31 17:58:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 17:58:47,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:47,986 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:47,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 17:58:47,986 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1691282748, now seen corresponding path program 28 times [2022-01-31 17:58:47,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:47,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336696989] [2022-01-31 17:58:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:47,988 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:47,988 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:47,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:47,990 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:48,433 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:48,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336696989] [2022-01-31 17:58:48,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [336696989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:48,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:48,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-31 17:58:48,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719365326] [2022-01-31 17:58:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:48,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 17:58:48,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 17:58:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 17:58:48,435 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:49,025 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-01-31 17:58:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 17:58:49,025 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-01-31 17:58:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:49,026 INFO L225 Difference]: With dead ends: 86 [2022-01-31 17:58:49,026 INFO L226 Difference]: Without dead ends: 77 [2022-01-31 17:58:49,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 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 17:58:49,027 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 71 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:49,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 36 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-31 17:58:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2022-01-31 17:58:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-01-31 17:58:49,038 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 73 [2022-01-31 17:58:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:49,038 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-01-31 17:58:49,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-01-31 17:58:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 17:58:49,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:49,039 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:49,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 17:58:49,039 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1808377794, now seen corresponding path program 29 times [2022-01-31 17:58:49,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:49,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267603402] [2022-01-31 17:58:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:49,041 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:49,042 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:49,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:49,043 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:49,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:49,477 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267603402] [2022-01-31 17:58:49,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [267603402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:49,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:49,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-31 17:58:49,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108089950] [2022-01-31 17:58:49,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:49,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 17:58:49,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 17:58:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 17:58:49,479 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:50,120 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2022-01-31 17:58:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 17:58:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-01-31 17:58:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:50,121 INFO L225 Difference]: With dead ends: 88 [2022-01-31 17:58:50,121 INFO L226 Difference]: Without dead ends: 79 [2022-01-31 17:58:50,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 17:58:50,123 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 73 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:50,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 31 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-31 17:58:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2022-01-31 17:58:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2022-01-31 17:58:50,137 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 75 [2022-01-31 17:58:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:50,137 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2022-01-31 17:58:50,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2022-01-31 17:58:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-31 17:58:50,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:50,138 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:50,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 17:58:50,138 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:50,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2022765888, now seen corresponding path program 30 times [2022-01-31 17:58:50,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:50,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400681922] [2022-01-31 17:58:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:50,141 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:50,141 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:50,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:50,143 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:50,599 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:50,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400681922] [2022-01-31 17:58:50,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [400681922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:50,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:50,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-01-31 17:58:50,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320194291] [2022-01-31 17:58:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:50,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 17:58:50,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:50,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 17:58:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 17:58:50,601 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 34 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:51,240 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2022-01-31 17:58:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 17:58:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 34 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2022-01-31 17:58:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:51,241 INFO L225 Difference]: With dead ends: 90 [2022-01-31 17:58:51,241 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 17:58:51,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 17:58:51,242 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 75 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:51,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 31 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 17:58:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-01-31 17:58:51,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-01-31 17:58:51,252 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 77 [2022-01-31 17:58:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:51,252 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-01-31 17:58:51,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.085714285714286) internal successors, (73), 34 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-01-31 17:58:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 17:58:51,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:51,253 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:51,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 17:58:51,253 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1891294014, now seen corresponding path program 31 times [2022-01-31 17:58:51,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:51,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101586767] [2022-01-31 17:58:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:51,255 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:51,255 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:51,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:51,257 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:51,747 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:51,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101586767] [2022-01-31 17:58:51,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [101586767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:51,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:51,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-31 17:58:51,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763097192] [2022-01-31 17:58:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:51,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 17:58:51,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:51,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 17:58:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 17:58:51,749 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:52,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:52,498 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2022-01-31 17:58:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 17:58:52,499 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-01-31 17:58:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:52,499 INFO L225 Difference]: With dead ends: 92 [2022-01-31 17:58:52,499 INFO L226 Difference]: Without dead ends: 83 [2022-01-31 17:58:52,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 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 17:58:52,500 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 77 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:52,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 36 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-31 17:58:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2022-01-31 17:58:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-01-31 17:58:52,511 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 79 [2022-01-31 17:58:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:52,511 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-01-31 17:58:52,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-01-31 17:58:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-31 17:58:52,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:52,512 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:52,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 17:58:52,512 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 100874684, now seen corresponding path program 32 times [2022-01-31 17:58:52,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:52,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226065426] [2022-01-31 17:58:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:52,514 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:52,514 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:52,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:52,515 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:53,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:53,041 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:53,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226065426] [2022-01-31 17:58:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1226065426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:53,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:53,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-31 17:58:53,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462714596] [2022-01-31 17:58:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 17:58:53,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 17:58:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 17:58:53,043 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:53,769 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-01-31 17:58:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 17:58:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-01-31 17:58:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:53,770 INFO L225 Difference]: With dead ends: 94 [2022-01-31 17:58:53,770 INFO L226 Difference]: Without dead ends: 85 [2022-01-31 17:58:53,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 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 17:58:53,771 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 79 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:53,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 36 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-31 17:58:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-01-31 17:58:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-01-31 17:58:53,783 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 81 [2022-01-31 17:58:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:53,784 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-01-31 17:58:53,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-01-31 17:58:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 17:58:53,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:53,784 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:53,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 17:58:53,784 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:53,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1789784250, now seen corresponding path program 33 times [2022-01-31 17:58:53,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:53,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137567320] [2022-01-31 17:58:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:53,786 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:53,787 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:53,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:53,788 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:54,307 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:54,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137567320] [2022-01-31 17:58:54,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137567320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:54,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:54,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-31 17:58:54,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311781994] [2022-01-31 17:58:54,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:54,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 17:58:54,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:54,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 17:58:54,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 17:58:54,308 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:55,027 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2022-01-31 17:58:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 17:58:55,027 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2022-01-31 17:58:55,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:55,028 INFO L225 Difference]: With dead ends: 96 [2022-01-31 17:58:55,028 INFO L226 Difference]: Without dead ends: 87 [2022-01-31 17:58:55,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 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 17:58:55,029 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 81 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:55,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 21 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:55,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-31 17:58:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2022-01-31 17:58:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-01-31 17:58:55,042 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 83 [2022-01-31 17:58:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:55,042 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-01-31 17:58:55,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-01-31 17:58:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 17:58:55,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:55,042 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:55,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 17:58:55,043 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1334239288, now seen corresponding path program 34 times [2022-01-31 17:58:55,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:55,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591403703] [2022-01-31 17:58:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:55,045 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:55,045 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:55,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:55,046 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:55,582 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:55,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591403703] [2022-01-31 17:58:55,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1591403703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:55,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:55,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-01-31 17:58:55,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123075984] [2022-01-31 17:58:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:55,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 17:58:55,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 17:58:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 17:58:55,584 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:56,333 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2022-01-31 17:58:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 17:58:56,333 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2022-01-31 17:58:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:56,334 INFO L225 Difference]: With dead ends: 98 [2022-01-31 17:58:56,334 INFO L226 Difference]: Without dead ends: 89 [2022-01-31 17:58:56,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 17:58:56,336 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:56,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 41 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-31 17:58:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2022-01-31 17:58:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-01-31 17:58:56,353 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 85 [2022-01-31 17:58:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:56,353 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-01-31 17:58:56,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-01-31 17:58:56,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-31 17:58:56,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:56,354 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:56,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 17:58:56,354 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1642194998, now seen corresponding path program 35 times [2022-01-31 17:58:56,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:56,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193910610] [2022-01-31 17:58:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:56,357 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:56,357 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:56,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:56,359 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:56,917 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:56,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193910610] [2022-01-31 17:58:56,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1193910610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:56,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:56,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-01-31 17:58:56,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496846284] [2022-01-31 17:58:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:56,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 17:58:56,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:56,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 17:58:56,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 17:58:56,929 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:57,698 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2022-01-31 17:58:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 17:58:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2022-01-31 17:58:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:57,700 INFO L225 Difference]: With dead ends: 100 [2022-01-31 17:58:57,700 INFO L226 Difference]: Without dead ends: 91 [2022-01-31 17:58:57,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 17:58:57,701 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:57,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 26 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-31 17:58:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2022-01-31 17:58:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2022-01-31 17:58:57,716 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 87 [2022-01-31 17:58:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:57,716 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2022-01-31 17:58:57,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2022-01-31 17:58:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-31 17:58:57,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:57,717 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:57,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 17:58:57,717 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1234888884, now seen corresponding path program 36 times [2022-01-31 17:58:57,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:57,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197141571] [2022-01-31 17:58:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:57,720 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:57,720 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:57,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:57,722 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:58,334 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:58,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197141571] [2022-01-31 17:58:58,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1197141571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:58,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:58,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-01-31 17:58:58,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276562746] [2022-01-31 17:58:58,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:58,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 17:58:58,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:58,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 17:58:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 17:58:58,335 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:58:59,160 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2022-01-31 17:58:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 17:58:59,160 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2022-01-31 17:58:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:58:59,161 INFO L225 Difference]: With dead ends: 102 [2022-01-31 17:58:59,161 INFO L226 Difference]: Without dead ends: 93 [2022-01-31 17:58:59,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 17:58:59,163 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 87 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:58:59,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 36 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:58:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-31 17:58:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2022-01-31 17:58:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2022-01-31 17:58:59,182 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 89 [2022-01-31 17:58:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:58:59,182 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2022-01-31 17:58:59,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:58:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2022-01-31 17:58:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-31 17:58:59,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:58:59,183 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:58:59,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 17:58:59,183 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:58:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:58:59,184 INFO L85 PathProgramCache]: Analyzing trace with hash 655737266, now seen corresponding path program 37 times [2022-01-31 17:58:59,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:58:59,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153587504] [2022-01-31 17:58:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:58:59,186 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:58:59,186 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:58:59,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:58:59,188 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:58:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:58:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:58:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:58:59,827 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:58:59,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153587504] [2022-01-31 17:58:59,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1153587504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:58:59,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:58:59,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-01-31 17:58:59,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415773901] [2022-01-31 17:58:59,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:58:59,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 17:58:59,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:58:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 17:58:59,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 17:58:59,829 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:00,692 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2022-01-31 17:59:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 17:59:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2022-01-31 17:59:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:00,693 INFO L225 Difference]: With dead ends: 104 [2022-01-31 17:59:00,693 INFO L226 Difference]: Without dead ends: 95 [2022-01-31 17:59:00,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 17:59:00,694 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 89 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:00,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 56 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-01-31 17:59:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2022-01-31 17:59:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2022-01-31 17:59:00,714 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 91 [2022-01-31 17:59:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:00,714 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2022-01-31 17:59:00,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2022-01-31 17:59:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-31 17:59:00,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:00,715 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:00,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 17:59:00,715 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:00,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1858186448, now seen corresponding path program 38 times [2022-01-31 17:59:00,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:00,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653346159] [2022-01-31 17:59:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:00,718 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:00,718 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:00,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:00,720 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:01,346 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:01,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653346159] [2022-01-31 17:59:01,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [653346159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:01,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:01,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-01-31 17:59:01,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871084] [2022-01-31 17:59:01,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:01,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 17:59:01,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 17:59:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 17:59:01,347 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 43 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:02,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:02,261 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2022-01-31 17:59:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 17:59:02,261 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2022-01-31 17:59:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:02,262 INFO L225 Difference]: With dead ends: 106 [2022-01-31 17:59:02,262 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 17:59:02,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 17:59:02,264 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 91 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:02,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 41 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 17:59:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2022-01-31 17:59:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-01-31 17:59:02,284 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 93 [2022-01-31 17:59:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:02,284 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-01-31 17:59:02,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-01-31 17:59:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-31 17:59:02,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:02,285 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:02,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 17:59:02,285 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:02,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:02,286 INFO L85 PathProgramCache]: Analyzing trace with hash 327712046, now seen corresponding path program 39 times [2022-01-31 17:59:02,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:02,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699369762] [2022-01-31 17:59:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:02,288 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:02,288 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:02,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:02,290 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:03,035 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:03,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699369762] [2022-01-31 17:59:03,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1699369762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:03,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:03,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-01-31 17:59:03,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145534361] [2022-01-31 17:59:03,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:03,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 17:59:03,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:03,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 17:59:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 17:59:03,037 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:03,960 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2022-01-31 17:59:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 17:59:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2022-01-31 17:59:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:03,961 INFO L225 Difference]: With dead ends: 108 [2022-01-31 17:59:03,961 INFO L226 Difference]: Without dead ends: 99 [2022-01-31 17:59:03,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 17:59:03,962 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 93 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:03,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 26 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-31 17:59:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2022-01-31 17:59:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2022-01-31 17:59:03,980 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 95 [2022-01-31 17:59:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:03,980 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2022-01-31 17:59:03,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2022-01-31 17:59:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 17:59:03,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:03,981 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:03,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 17:59:03,981 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash 737157036, now seen corresponding path program 40 times [2022-01-31 17:59:03,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:03,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999016309] [2022-01-31 17:59:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:03,983 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:03,983 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:03,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:03,985 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:04,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:04,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999016309] [2022-01-31 17:59:04,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [999016309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:04,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:04,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-01-31 17:59:04,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058352047] [2022-01-31 17:59:04,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:04,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 17:59:04,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:04,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 17:59:04,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 17:59:04,700 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 45 states, 45 states have (on average 2.066666666666667) internal successors, (93), 44 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:05,642 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2022-01-31 17:59:05,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 17:59:05,643 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.066666666666667) internal successors, (93), 44 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-01-31 17:59:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:05,644 INFO L225 Difference]: With dead ends: 110 [2022-01-31 17:59:05,644 INFO L226 Difference]: Without dead ends: 101 [2022-01-31 17:59:05,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 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 17:59:05,645 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 95 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:05,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 46 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-31 17:59:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2022-01-31 17:59:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2022-01-31 17:59:05,667 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 97 [2022-01-31 17:59:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:05,669 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2022-01-31 17:59:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.066666666666667) internal successors, (93), 44 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2022-01-31 17:59:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-31 17:59:05,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:05,670 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:05,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-31 17:59:05,670 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash -923198806, now seen corresponding path program 41 times [2022-01-31 17:59:05,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:05,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169910321] [2022-01-31 17:59:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:05,673 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:05,673 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:05,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:05,675 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:06,458 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:06,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169910321] [2022-01-31 17:59:06,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1169910321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:06,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:06,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-01-31 17:59:06,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172795265] [2022-01-31 17:59:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:06,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 17:59:06,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 17:59:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 17:59:06,460 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 46 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 45 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:07,518 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2022-01-31 17:59:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 17:59:07,518 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 45 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2022-01-31 17:59:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:07,519 INFO L225 Difference]: With dead ends: 112 [2022-01-31 17:59:07,519 INFO L226 Difference]: Without dead ends: 103 [2022-01-31 17:59:07,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 17:59:07,521 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 97 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:07,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 51 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-31 17:59:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2022-01-31 17:59:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2022-01-31 17:59:07,548 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 99 [2022-01-31 17:59:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:07,548 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2022-01-31 17:59:07,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 45 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2022-01-31 17:59:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-31 17:59:07,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:07,549 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:07,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-31 17:59:07,549 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1202671144, now seen corresponding path program 42 times [2022-01-31 17:59:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:07,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104904780] [2022-01-31 17:59:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:07,552 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:07,552 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:07,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:07,554 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:08,296 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:08,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104904780] [2022-01-31 17:59:08,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [104904780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:08,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:08,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-01-31 17:59:08,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037337810] [2022-01-31 17:59:08,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:08,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 17:59:08,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 17:59:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 17:59:08,297 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 47 states, 47 states have (on average 2.0638297872340425) internal successors, (97), 46 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:09,349 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2022-01-31 17:59:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 17:59:09,349 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0638297872340425) internal successors, (97), 46 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2022-01-31 17:59:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:09,350 INFO L225 Difference]: With dead ends: 114 [2022-01-31 17:59:09,350 INFO L226 Difference]: Without dead ends: 105 [2022-01-31 17:59:09,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 17:59:09,351 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:09,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 51 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-31 17:59:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2022-01-31 17:59:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-01-31 17:59:09,369 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 101 [2022-01-31 17:59:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:09,370 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-01-31 17:59:09,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.0638297872340425) internal successors, (97), 46 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-01-31 17:59:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-31 17:59:09,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:09,370 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:09,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-31 17:59:09,370 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash -240739802, now seen corresponding path program 43 times [2022-01-31 17:59:09,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:09,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67317571] [2022-01-31 17:59:09,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:09,373 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:09,373 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:09,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:09,375 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:10,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:10,120 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:10,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67317571] [2022-01-31 17:59:10,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [67317571] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:10,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:10,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-01-31 17:59:10,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229548781] [2022-01-31 17:59:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:10,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 17:59:10,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 17:59:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 17:59:10,122 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 48 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:11,195 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2022-01-31 17:59:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 17:59:11,196 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2022-01-31 17:59:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:11,196 INFO L225 Difference]: With dead ends: 116 [2022-01-31 17:59:11,196 INFO L226 Difference]: Without dead ends: 107 [2022-01-31 17:59:11,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 17:59:11,198 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 101 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:11,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 41 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-31 17:59:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2022-01-31 17:59:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-01-31 17:59:11,215 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 103 [2022-01-31 17:59:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:11,215 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-01-31 17:59:11,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 47 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-01-31 17:59:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-31 17:59:11,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:11,216 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:11,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-31 17:59:11,216 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash -84222300, now seen corresponding path program 44 times [2022-01-31 17:59:11,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:11,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406787265] [2022-01-31 17:59:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:11,218 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:11,218 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:11,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:11,221 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:12,051 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406787265] [2022-01-31 17:59:12,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1406787265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:12,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:12,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-01-31 17:59:12,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352409282] [2022-01-31 17:59:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:12,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 17:59:12,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 17:59:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 17:59:12,052 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 48 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:13,201 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2022-01-31 17:59:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 17:59:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 48 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2022-01-31 17:59:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:13,202 INFO L225 Difference]: With dead ends: 118 [2022-01-31 17:59:13,202 INFO L226 Difference]: Without dead ends: 109 [2022-01-31 17:59:13,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 17:59:13,204 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:13,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 56 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-01-31 17:59:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2022-01-31 17:59:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2022-01-31 17:59:13,222 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 105 [2022-01-31 17:59:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2022-01-31 17:59:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 48 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2022-01-31 17:59:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-31 17:59:13,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:13,223 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:13,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-31 17:59:13,223 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash 5241762, now seen corresponding path program 45 times [2022-01-31 17:59:13,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:13,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150120781] [2022-01-31 17:59:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:13,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:13,225 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:13,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:13,227 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:14,081 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:14,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150120781] [2022-01-31 17:59:14,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [150120781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:14,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:14,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-01-31 17:59:14,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065093680] [2022-01-31 17:59:14,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:14,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 17:59:14,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 17:59:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 17:59:14,083 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:15,256 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2022-01-31 17:59:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 17:59:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2022-01-31 17:59:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:15,257 INFO L225 Difference]: With dead ends: 120 [2022-01-31 17:59:15,257 INFO L226 Difference]: Without dead ends: 111 [2022-01-31 17:59:15,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 17:59:15,258 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 105 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:15,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 41 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-31 17:59:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2022-01-31 17:59:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2022-01-31 17:59:15,284 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 107 [2022-01-31 17:59:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:15,285 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2022-01-31 17:59:15,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 49 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2022-01-31 17:59:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-31 17:59:15,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:15,285 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:15,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-31 17:59:15,285 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:15,286 INFO L85 PathProgramCache]: Analyzing trace with hash 80859424, now seen corresponding path program 46 times [2022-01-31 17:59:15,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:15,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829927153] [2022-01-31 17:59:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:15,288 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:15,288 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:15,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:15,290 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:16,209 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829927153] [2022-01-31 17:59:16,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [829927153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:16,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:16,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-01-31 17:59:16,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442459617] [2022-01-31 17:59:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:16,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 17:59:16,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 17:59:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 17:59:16,210 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:17,455 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2022-01-31 17:59:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 17:59:17,455 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2022-01-31 17:59:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:17,456 INFO L225 Difference]: With dead ends: 122 [2022-01-31 17:59:17,456 INFO L226 Difference]: Without dead ends: 113 [2022-01-31 17:59:17,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 3 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 17:59:17,457 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 107 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:17,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 46 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-31 17:59:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2022-01-31 17:59:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-01-31 17:59:17,485 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 109 [2022-01-31 17:59:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:17,485 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-01-31 17:59:17,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-01-31 17:59:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-31 17:59:17,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:17,486 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:17,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-31 17:59:17,486 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:17,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash -265011426, now seen corresponding path program 47 times [2022-01-31 17:59:17,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:17,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077348475] [2022-01-31 17:59:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:17,488 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:17,488 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:17,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:17,491 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:18,522 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077348475] [2022-01-31 17:59:18,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2077348475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:18,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:18,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-01-31 17:59:18,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718188673] [2022-01-31 17:59:18,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:18,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 17:59:18,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 17:59:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 17:59:18,523 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 52 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:19,736 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2022-01-31 17:59:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 17:59:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2022-01-31 17:59:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:19,736 INFO L225 Difference]: With dead ends: 124 [2022-01-31 17:59:19,736 INFO L226 Difference]: Without dead ends: 115 [2022-01-31 17:59:19,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 17:59:19,738 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 109 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:19,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 36 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-31 17:59:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2022-01-31 17:59:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2022-01-31 17:59:19,764 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 111 [2022-01-31 17:59:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:19,764 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2022-01-31 17:59:19,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0576923076923075) internal successors, (107), 51 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2022-01-31 17:59:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-31 17:59:19,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:19,765 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:19,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-31 17:59:19,765 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1934416484, now seen corresponding path program 48 times [2022-01-31 17:59:19,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:19,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196256035] [2022-01-31 17:59:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:19,767 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:19,767 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:19,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:19,770 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:20,675 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:20,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196256035] [2022-01-31 17:59:20,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [196256035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:20,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:20,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-01-31 17:59:20,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335642533] [2022-01-31 17:59:20,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:20,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 17:59:20,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 17:59:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 17:59:20,676 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 52 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:21,975 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2022-01-31 17:59:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 17:59:21,976 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 52 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2022-01-31 17:59:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:21,976 INFO L225 Difference]: With dead ends: 126 [2022-01-31 17:59:21,976 INFO L226 Difference]: Without dead ends: 117 [2022-01-31 17:59:21,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 17:59:21,977 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 111 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:21,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 41 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-01-31 17:59:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2022-01-31 17:59:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2022-01-31 17:59:22,000 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 113 [2022-01-31 17:59:22,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:22,000 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2022-01-31 17:59:22,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 52 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2022-01-31 17:59:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-31 17:59:22,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:22,001 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:22,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-31 17:59:22,001 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:22,001 INFO L85 PathProgramCache]: Analyzing trace with hash 85091482, now seen corresponding path program 49 times [2022-01-31 17:59:22,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:22,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648848929] [2022-01-31 17:59:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:22,003 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:22,003 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:22,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:22,006 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:22,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:22,971 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:22,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648848929] [2022-01-31 17:59:22,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [648848929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:22,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:22,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-01-31 17:59:22,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188720800] [2022-01-31 17:59:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:22,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 17:59:22,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 17:59:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 17:59:22,972 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 53 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:24,298 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2022-01-31 17:59:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 17:59:24,298 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 53 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2022-01-31 17:59:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:24,299 INFO L225 Difference]: With dead ends: 128 [2022-01-31 17:59:24,299 INFO L226 Difference]: Without dead ends: 119 [2022-01-31 17:59:24,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 17:59:24,300 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 113 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:24,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 56 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-31 17:59:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2022-01-31 17:59:24,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2022-01-31 17:59:24,325 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 115 [2022-01-31 17:59:24,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:24,325 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2022-01-31 17:59:24,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 53 states have internal predecessors, (111), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2022-01-31 17:59:24,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-31 17:59:24,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:24,326 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:24,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-31 17:59:24,326 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:24,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash -492970984, now seen corresponding path program 50 times [2022-01-31 17:59:24,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:24,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005291326] [2022-01-31 17:59:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:24,328 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:24,328 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:24,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:24,330 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:25,361 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:25,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005291326] [2022-01-31 17:59:25,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1005291326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:25,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:25,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-01-31 17:59:25,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811206301] [2022-01-31 17:59:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:25,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 17:59:25,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:25,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 17:59:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 17:59:25,363 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand has 55 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 54 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:26,700 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2022-01-31 17:59:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 17:59:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 54 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2022-01-31 17:59:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:26,701 INFO L225 Difference]: With dead ends: 130 [2022-01-31 17:59:26,701 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 17:59:26,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 17:59:26,703 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 115 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:26,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 26 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 17:59:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2022-01-31 17:59:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2022-01-31 17:59:26,736 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 117 [2022-01-31 17:59:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:26,736 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2022-01-31 17:59:26,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 54 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2022-01-31 17:59:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-31 17:59:26,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:26,736 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:26,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-31 17:59:26,737 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1960219626, now seen corresponding path program 51 times [2022-01-31 17:59:26,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640549818] [2022-01-31 17:59:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:26,739 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:26,739 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:26,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:26,742 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:27,835 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:27,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640549818] [2022-01-31 17:59:27,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640549818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:27,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:27,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-01-31 17:59:27,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588316440] [2022-01-31 17:59:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:27,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 17:59:27,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 17:59:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 17:59:27,837 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:29,285 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2022-01-31 17:59:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 17:59:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2022-01-31 17:59:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:29,286 INFO L225 Difference]: With dead ends: 132 [2022-01-31 17:59:29,286 INFO L226 Difference]: Without dead ends: 123 [2022-01-31 17:59:29,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 17:59:29,287 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 117 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:29,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 36 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-31 17:59:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2022-01-31 17:59:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2022-01-31 17:59:29,320 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 119 [2022-01-31 17:59:29,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:29,320 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2022-01-31 17:59:29,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2022-01-31 17:59:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-31 17:59:29,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:29,321 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:29,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-31 17:59:29,321 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1058075796, now seen corresponding path program 52 times [2022-01-31 17:59:29,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:29,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896228325] [2022-01-31 17:59:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:29,323 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:29,324 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:29,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:29,327 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:30,408 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:30,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896228325] [2022-01-31 17:59:30,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1896228325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:30,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:30,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-01-31 17:59:30,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997790816] [2022-01-31 17:59:30,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:30,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 17:59:30,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 17:59:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 17:59:30,410 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 57 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 56 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:31,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:31,913 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2022-01-31 17:59:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 17:59:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 56 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2022-01-31 17:59:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:31,914 INFO L225 Difference]: With dead ends: 134 [2022-01-31 17:59:31,914 INFO L226 Difference]: Without dead ends: 125 [2022-01-31 17:59:31,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 3 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 17:59:31,915 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 119 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:31,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 61 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-01-31 17:59:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2022-01-31 17:59:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2022-01-31 17:59:31,946 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 121 [2022-01-31 17:59:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:31,946 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2022-01-31 17:59:31,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 56 states have internal predecessors, (117), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2022-01-31 17:59:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-31 17:59:31,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:31,947 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:31,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-31 17:59:31,947 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1757915758, now seen corresponding path program 53 times [2022-01-31 17:59:31,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:31,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714358172] [2022-01-31 17:59:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:31,949 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:31,949 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:31,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:31,952 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:33,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:33,046 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:33,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714358172] [2022-01-31 17:59:33,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [714358172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:33,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:33,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-01-31 17:59:33,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372568478] [2022-01-31 17:59:33,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:33,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 17:59:33,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:33,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 17:59:33,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 17:59:33,048 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 58 states, 58 states have (on average 2.0517241379310347) internal successors, (119), 57 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:34,540 INFO L93 Difference]: Finished difference Result 136 states and 138 transitions. [2022-01-31 17:59:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 17:59:34,541 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0517241379310347) internal successors, (119), 57 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2022-01-31 17:59:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:34,541 INFO L225 Difference]: With dead ends: 136 [2022-01-31 17:59:34,541 INFO L226 Difference]: Without dead ends: 127 [2022-01-31 17:59:34,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 3 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 17:59:34,543 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 121 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:34,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 51 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-31 17:59:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2022-01-31 17:59:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2022-01-31 17:59:34,590 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 123 [2022-01-31 17:59:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:34,591 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2022-01-31 17:59:34,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0517241379310347) internal successors, (119), 57 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2022-01-31 17:59:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-31 17:59:34,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:34,591 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:34,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-31 17:59:34,591 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2096402672, now seen corresponding path program 54 times [2022-01-31 17:59:34,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:34,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495577106] [2022-01-31 17:59:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:34,593 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:34,593 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:34,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:34,595 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:35,751 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:35,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495577106] [2022-01-31 17:59:35,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1495577106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:35,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:35,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-01-31 17:59:35,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822949369] [2022-01-31 17:59:35,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:35,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 17:59:35,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 17:59:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 17:59:35,753 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 59 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 58 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:37,288 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2022-01-31 17:59:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 17:59:37,289 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 58 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2022-01-31 17:59:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:37,290 INFO L225 Difference]: With dead ends: 138 [2022-01-31 17:59:37,290 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 17:59:37,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 17:59:37,292 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 123 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:37,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 21 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 17:59:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2022-01-31 17:59:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2022-01-31 17:59:37,328 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 125 [2022-01-31 17:59:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:37,329 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2022-01-31 17:59:37,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 58 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2022-01-31 17:59:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-31 17:59:37,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:37,330 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:37,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-31 17:59:37,330 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash -964812530, now seen corresponding path program 55 times [2022-01-31 17:59:37,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:37,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097231489] [2022-01-31 17:59:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:37,332 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:37,332 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:37,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:37,346 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:38,513 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:38,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097231489] [2022-01-31 17:59:38,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2097231489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:38,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:38,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-01-31 17:59:38,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649146917] [2022-01-31 17:59:38,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:38,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 17:59:38,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 17:59:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 17:59:38,515 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 60 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:40,116 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2022-01-31 17:59:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 17:59:40,116 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2022-01-31 17:59:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:40,117 INFO L225 Difference]: With dead ends: 140 [2022-01-31 17:59:40,117 INFO L226 Difference]: Without dead ends: 131 [2022-01-31 17:59:40,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 17:59:40,119 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 125 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:40,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 61 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-31 17:59:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2022-01-31 17:59:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2022-01-31 17:59:40,157 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 127 [2022-01-31 17:59:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:40,158 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2022-01-31 17:59:40,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.05) internal successors, (123), 59 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2022-01-31 17:59:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-31 17:59:40,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:40,158 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:40,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-31 17:59:40,159 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash -133411956, now seen corresponding path program 56 times [2022-01-31 17:59:40,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:40,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265540072] [2022-01-31 17:59:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:40,161 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:40,161 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:40,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:40,163 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:41,452 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:41,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265540072] [2022-01-31 17:59:41,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [265540072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:41,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:41,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-01-31 17:59:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181753995] [2022-01-31 17:59:41,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:41,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 17:59:41,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 17:59:41,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 17:59:41,454 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand has 61 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 60 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:43,093 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2022-01-31 17:59:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 17:59:43,093 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 60 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2022-01-31 17:59:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:43,094 INFO L225 Difference]: With dead ends: 142 [2022-01-31 17:59:43,094 INFO L226 Difference]: Without dead ends: 133 [2022-01-31 17:59:43,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 17:59:43,095 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 127 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:43,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 41 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-31 17:59:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2022-01-31 17:59:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2022-01-31 17:59:43,121 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 129 [2022-01-31 17:59:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:43,121 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2022-01-31 17:59:43,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 60 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2022-01-31 17:59:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-31 17:59:43,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:43,122 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:43,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-31 17:59:43,122 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash -21377398, now seen corresponding path program 57 times [2022-01-31 17:59:43,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:43,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34695584] [2022-01-31 17:59:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:43,123 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:43,123 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:43,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:43,126 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:44,404 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:44,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34695584] [2022-01-31 17:59:44,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [34695584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:44,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:44,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-01-31 17:59:44,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627325663] [2022-01-31 17:59:44,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:44,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 17:59:44,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 17:59:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 17:59:44,405 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 62 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 61 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:46,062 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2022-01-31 17:59:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 17:59:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 61 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2022-01-31 17:59:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:46,062 INFO L225 Difference]: With dead ends: 144 [2022-01-31 17:59:46,062 INFO L226 Difference]: Without dead ends: 135 [2022-01-31 17:59:46,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 17:59:46,064 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 129 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:46,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 36 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-01-31 17:59:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2022-01-31 17:59:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2022-01-31 17:59:46,092 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 131 [2022-01-31 17:59:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:46,092 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2022-01-31 17:59:46,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.0483870967741935) internal successors, (127), 61 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2022-01-31 17:59:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-31 17:59:46,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:46,092 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:46,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-31 17:59:46,093 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:46,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash 269650440, now seen corresponding path program 58 times [2022-01-31 17:59:46,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:46,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975382533] [2022-01-31 17:59:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:46,094 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:46,094 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:46,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:46,097 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:47,352 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:47,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975382533] [2022-01-31 17:59:47,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [975382533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:47,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:47,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-01-31 17:59:47,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967609403] [2022-01-31 17:59:47,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:47,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 17:59:47,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:47,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 17:59:47,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 17:59:47,354 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand has 63 states, 63 states have (on average 2.0476190476190474) internal successors, (129), 62 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:49,100 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2022-01-31 17:59:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 17:59:49,100 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0476190476190474) internal successors, (129), 62 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2022-01-31 17:59:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:49,101 INFO L225 Difference]: With dead ends: 146 [2022-01-31 17:59:49,101 INFO L226 Difference]: Without dead ends: 137 [2022-01-31 17:59:49,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 17:59:49,102 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 131 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:49,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 46 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-01-31 17:59:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2022-01-31 17:59:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-01-31 17:59:49,145 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 133 [2022-01-31 17:59:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:49,145 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-01-31 17:59:49,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0476190476190474) internal successors, (129), 62 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-01-31 17:59:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-31 17:59:49,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:49,146 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:49,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-31 17:59:49,146 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:49,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash 774528518, now seen corresponding path program 59 times [2022-01-31 17:59:49,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:49,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600305122] [2022-01-31 17:59:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:49,147 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:49,148 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:49,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:49,150 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:50,497 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600305122] [2022-01-31 17:59:50,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [600305122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:50,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:50,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-01-31 17:59:50,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127820534] [2022-01-31 17:59:50,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:50,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 17:59:50,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 17:59:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 17:59:50,498 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 64 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:52,292 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2022-01-31 17:59:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 17:59:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2022-01-31 17:59:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:52,293 INFO L225 Difference]: With dead ends: 148 [2022-01-31 17:59:52,293 INFO L226 Difference]: Without dead ends: 139 [2022-01-31 17:59:52,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 17:59:52,295 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 133 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:52,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 36 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-31 17:59:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2022-01-31 17:59:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2022-01-31 17:59:52,330 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 135 [2022-01-31 17:59:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:52,330 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2022-01-31 17:59:52,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 63 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2022-01-31 17:59:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-31 17:59:52,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:52,331 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:52,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-31 17:59:52,331 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:52,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 631057028, now seen corresponding path program 60 times [2022-01-31 17:59:52,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:52,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665278779] [2022-01-31 17:59:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:52,333 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:52,333 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:52,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:52,337 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:53,678 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:53,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665278779] [2022-01-31 17:59:53,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1665278779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:53,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:53,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-01-31 17:59:53,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903744657] [2022-01-31 17:59:53,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:53,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 17:59:53,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 17:59:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 17:59:53,679 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand has 65 states, 65 states have (on average 2.046153846153846) internal successors, (133), 64 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:55,513 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2022-01-31 17:59:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 17:59:55,514 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.046153846153846) internal successors, (133), 64 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2022-01-31 17:59:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:55,514 INFO L225 Difference]: With dead ends: 150 [2022-01-31 17:59:55,514 INFO L226 Difference]: Without dead ends: 141 [2022-01-31 17:59:55,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 17:59:55,515 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 135 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:55,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 26 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 17:59:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-31 17:59:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2022-01-31 17:59:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 states have internal predecessors, (138), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2022-01-31 17:59:55,546 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 137 [2022-01-31 17:59:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:55,546 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2022-01-31 17:59:55,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.046153846153846) internal successors, (133), 64 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2022-01-31 17:59:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-31 17:59:55,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:55,547 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:55,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-31 17:59:55,548 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash 193908610, now seen corresponding path program 61 times [2022-01-31 17:59:55,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148577210] [2022-01-31 17:59:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:55,550 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:55,550 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:55,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:55,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:56,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 17:59:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 17:59:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 17:59:56,974 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 17:59:56,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148577210] [2022-01-31 17:59:56,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [148577210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 17:59:56,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 17:59:56,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-01-31 17:59:56,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359961683] [2022-01-31 17:59:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 17:59:56,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 17:59:56,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 17:59:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 17:59:56,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 17:59:56,976 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 65 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 17:59:58,881 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2022-01-31 17:59:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 17:59:58,881 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 65 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2022-01-31 17:59:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 17:59:58,882 INFO L225 Difference]: With dead ends: 152 [2022-01-31 17:59:58,882 INFO L226 Difference]: Without dead ends: 143 [2022-01-31 17:59:58,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 17:59:58,883 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 137 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 17:59:58,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 66 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 17:59:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-31 17:59:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2022-01-31 17:59:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2022-01-31 17:59:58,923 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 139 [2022-01-31 17:59:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 17:59:58,924 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2022-01-31 17:59:58,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 65 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 17:59:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2022-01-31 17:59:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-31 17:59:58,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 17:59:58,924 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 17:59:58,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-31 17:59:58,925 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 17:59:58,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 17:59:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1001073920, now seen corresponding path program 62 times [2022-01-31 17:59:58,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 17:59:58,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256091688] [2022-01-31 17:59:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 17:59:58,926 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 17:59:58,926 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 17:59:58,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 17:59:58,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 17:59:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:00,352 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:00,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256091688] [2022-01-31 18:00:00,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1256091688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:00,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:00,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-01-31 18:00:00,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776417819] [2022-01-31 18:00:00,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:00,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 18:00:00,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 18:00:00,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 18:00:00,354 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand has 67 states, 67 states have (on average 2.044776119402985) internal successors, (137), 66 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:02,311 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2022-01-31 18:00:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 18:00:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.044776119402985) internal successors, (137), 66 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2022-01-31 18:00:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:02,313 INFO L225 Difference]: With dead ends: 154 [2022-01-31 18:00:02,313 INFO L226 Difference]: Without dead ends: 145 [2022-01-31 18:00:02,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 18:00:02,314 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 139 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:02,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 31 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:00:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-31 18:00:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2022-01-31 18:00:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2022-01-31 18:00:02,353 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 141 [2022-01-31 18:00:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:02,353 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2022-01-31 18:00:02,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.044776119402985) internal successors, (137), 66 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2022-01-31 18:00:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-31 18:00:02,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:02,353 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:02,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-31 18:00:02,354 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash -702143746, now seen corresponding path program 63 times [2022-01-31 18:00:02,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:02,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099018699] [2022-01-31 18:00:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:02,355 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:02,356 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:02,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:02,359 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:03,885 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:03,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099018699] [2022-01-31 18:00:03,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2099018699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:03,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:03,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-01-31 18:00:03,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833025322] [2022-01-31 18:00:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:03,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 18:00:03,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 18:00:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 18:00:03,887 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 68 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:05,869 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2022-01-31 18:00:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 18:00:05,869 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2022-01-31 18:00:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:05,870 INFO L225 Difference]: With dead ends: 156 [2022-01-31 18:00:05,870 INFO L226 Difference]: Without dead ends: 147 [2022-01-31 18:00:05,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:00:05,871 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 141 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:05,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 41 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:00:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-01-31 18:00:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2022-01-31 18:00:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2022-01-31 18:00:05,914 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 143 [2022-01-31 18:00:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:05,915 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2022-01-31 18:00:05,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 67 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2022-01-31 18:00:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-31 18:00:05,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:05,916 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:05,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-31 18:00:05,916 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1111780996, now seen corresponding path program 64 times [2022-01-31 18:00:05,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:05,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632552422] [2022-01-31 18:00:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:05,918 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:05,918 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:05,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:05,922 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:07,449 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:07,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632552422] [2022-01-31 18:00:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632552422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:07,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:07,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-01-31 18:00:07,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928149247] [2022-01-31 18:00:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 18:00:07,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 18:00:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 18:00:07,451 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 68 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:09,565 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2022-01-31 18:00:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 18:00:09,566 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 68 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2022-01-31 18:00:09,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:09,566 INFO L225 Difference]: With dead ends: 158 [2022-01-31 18:00:09,566 INFO L226 Difference]: Without dead ends: 149 [2022-01-31 18:00:09,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 18:00:09,568 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 143 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:09,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 36 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:00:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-01-31 18:00:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2022-01-31 18:00:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2022-01-31 18:00:09,616 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 145 [2022-01-31 18:00:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:09,616 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2022-01-31 18:00:09,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 68 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:09,617 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2022-01-31 18:00:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-31 18:00:09,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:09,617 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:09,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-31 18:00:09,617 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:09,618 INFO L85 PathProgramCache]: Analyzing trace with hash 363812986, now seen corresponding path program 65 times [2022-01-31 18:00:09,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:09,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390202026] [2022-01-31 18:00:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:09,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:09,620 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:09,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:09,624 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:11,160 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:11,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390202026] [2022-01-31 18:00:11,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1390202026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:11,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:11,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-01-31 18:00:11,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125675915] [2022-01-31 18:00:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:11,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 18:00:11,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 18:00:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 18:00:11,163 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 70 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 69 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:13,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:13,306 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2022-01-31 18:00:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 18:00:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 69 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2022-01-31 18:00:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:13,307 INFO L225 Difference]: With dead ends: 160 [2022-01-31 18:00:13,307 INFO L226 Difference]: Without dead ends: 151 [2022-01-31 18:00:13,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 18:00:13,308 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 145 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:13,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 41 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:00:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-01-31 18:00:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2022-01-31 18:00:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2022-01-31 18:00:13,358 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 147 [2022-01-31 18:00:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:13,359 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2022-01-31 18:00:13,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 69 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2022-01-31 18:00:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-31 18:00:13,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:13,360 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:13,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-31 18:00:13,360 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:13,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1070422008, now seen corresponding path program 66 times [2022-01-31 18:00:13,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:13,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345964744] [2022-01-31 18:00:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:13,362 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:13,362 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:13,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:13,366 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:14,936 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:14,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345964744] [2022-01-31 18:00:14,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1345964744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:14,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:14,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-01-31 18:00:14,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949752485] [2022-01-31 18:00:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:14,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 18:00:14,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 18:00:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 18:00:14,938 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand has 71 states, 71 states have (on average 2.0422535211267605) internal successors, (145), 70 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:17,124 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2022-01-31 18:00:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 18:00:17,125 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0422535211267605) internal successors, (145), 70 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2022-01-31 18:00:17,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:17,125 INFO L225 Difference]: With dead ends: 162 [2022-01-31 18:00:17,125 INFO L226 Difference]: Without dead ends: 153 [2022-01-31 18:00:17,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 18:00:17,127 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 147 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:17,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 41 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:00:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-31 18:00:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2022-01-31 18:00:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2022-01-31 18:00:17,167 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 149 [2022-01-31 18:00:17,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:17,167 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2022-01-31 18:00:17,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0422535211267605) internal successors, (145), 70 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2022-01-31 18:00:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-31 18:00:17,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:17,168 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:17,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-31 18:00:17,168 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1516859382, now seen corresponding path program 67 times [2022-01-31 18:00:17,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:17,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181541328] [2022-01-31 18:00:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:17,170 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:17,170 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:17,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:17,174 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:18,806 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:18,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181541328] [2022-01-31 18:00:18,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1181541328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:18,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:18,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-01-31 18:00:18,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510219830] [2022-01-31 18:00:18,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:18,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 18:00:18,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 18:00:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 18:00:18,808 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 72 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:21,093 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2022-01-31 18:00:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 18:00:21,094 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2022-01-31 18:00:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:21,094 INFO L225 Difference]: With dead ends: 164 [2022-01-31 18:00:21,094 INFO L226 Difference]: Without dead ends: 155 [2022-01-31 18:00:21,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 18:00:21,096 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 149 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:21,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 36 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 18:00:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-01-31 18:00:21,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2022-01-31 18:00:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2022-01-31 18:00:21,134 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 151 [2022-01-31 18:00:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:21,134 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2022-01-31 18:00:21,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 71 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2022-01-31 18:00:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-31 18:00:21,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:21,135 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:21,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-31 18:00:21,135 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1046446196, now seen corresponding path program 68 times [2022-01-31 18:00:21,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:21,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168268149] [2022-01-31 18:00:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:21,137 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:21,137 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:21,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:21,146 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:22,844 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:22,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168268149] [2022-01-31 18:00:22,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1168268149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:22,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:22,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-01-31 18:00:22,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666788328] [2022-01-31 18:00:22,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:22,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 18:00:22,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:22,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 18:00:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 18:00:22,846 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand has 73 states, 73 states have (on average 2.041095890410959) internal successors, (149), 72 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:25,205 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2022-01-31 18:00:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 18:00:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.041095890410959) internal successors, (149), 72 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2022-01-31 18:00:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:25,206 INFO L225 Difference]: With dead ends: 166 [2022-01-31 18:00:25,206 INFO L226 Difference]: Without dead ends: 157 [2022-01-31 18:00:25,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 18:00:25,208 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 151 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:25,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 46 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-01-31 18:00:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2022-01-31 18:00:25,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2022-01-31 18:00:25,259 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 153 [2022-01-31 18:00:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:25,260 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2022-01-31 18:00:25,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.041095890410959) internal successors, (149), 72 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2022-01-31 18:00:25,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-31 18:00:25,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:25,260 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:25,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-31 18:00:25,260 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:25,261 INFO L85 PathProgramCache]: Analyzing trace with hash -49059470, now seen corresponding path program 69 times [2022-01-31 18:00:25,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:25,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625048120] [2022-01-31 18:00:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:25,262 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:25,262 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:25,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:25,266 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:26,965 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:26,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625048120] [2022-01-31 18:00:26,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [625048120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:26,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:26,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-01-31 18:00:26,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398276650] [2022-01-31 18:00:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:26,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 18:00:26,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:26,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 18:00:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 18:00:26,967 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 74 states, 74 states have (on average 2.0405405405405403) internal successors, (151), 73 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:29,331 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2022-01-31 18:00:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 18:00:29,331 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0405405405405403) internal successors, (151), 73 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2022-01-31 18:00:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:29,332 INFO L225 Difference]: With dead ends: 168 [2022-01-31 18:00:29,332 INFO L226 Difference]: Without dead ends: 159 [2022-01-31 18:00:29,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 18:00:29,334 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 153 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:29,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 36 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-01-31 18:00:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2022-01-31 18:00:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2022-01-31 18:00:29,372 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 155 [2022-01-31 18:00:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:29,372 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2022-01-31 18:00:29,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0405405405405403) internal successors, (151), 73 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2022-01-31 18:00:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-31 18:00:29,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:29,373 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:29,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-31 18:00:29,373 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash -563016976, now seen corresponding path program 70 times [2022-01-31 18:00:29,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:29,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734373990] [2022-01-31 18:00:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:29,375 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:29,375 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:29,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:29,378 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:31,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:31,190 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:31,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734373990] [2022-01-31 18:00:31,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1734373990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:31,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:31,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-01-31 18:00:31,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188448974] [2022-01-31 18:00:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:31,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 18:00:31,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 18:00:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 18:00:31,191 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand has 75 states, 75 states have (on average 2.04) internal successors, (153), 74 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:33,604 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2022-01-31 18:00:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 18:00:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.04) internal successors, (153), 74 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2022-01-31 18:00:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:33,605 INFO L225 Difference]: With dead ends: 170 [2022-01-31 18:00:33,605 INFO L226 Difference]: Without dead ends: 161 [2022-01-31 18:00:33,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 18:00:33,606 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 155 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:33,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 51 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-31 18:00:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2022-01-31 18:00:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2022-01-31 18:00:33,663 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 157 [2022-01-31 18:00:33,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:33,664 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2022-01-31 18:00:33,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.04) internal successors, (153), 74 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2022-01-31 18:00:33,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-31 18:00:33,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:33,665 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:33,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-31 18:00:33,665 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -554941202, now seen corresponding path program 71 times [2022-01-31 18:00:33,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:33,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117536136] [2022-01-31 18:00:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:33,667 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:33,667 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:33,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:33,671 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:35,455 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:35,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117536136] [2022-01-31 18:00:35,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1117536136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:35,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:35,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-01-31 18:00:35,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32046950] [2022-01-31 18:00:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:35,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 18:00:35,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 18:00:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 18:00:35,457 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 76 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:37,920 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2022-01-31 18:00:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 18:00:37,920 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2022-01-31 18:00:37,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:37,921 INFO L225 Difference]: With dead ends: 172 [2022-01-31 18:00:37,921 INFO L226 Difference]: Without dead ends: 163 [2022-01-31 18:00:37,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 18:00:37,922 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 157 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:37,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 36 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-31 18:00:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2022-01-31 18:00:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2022-01-31 18:00:37,964 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 159 [2022-01-31 18:00:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:37,964 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2022-01-31 18:00:37,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.039473684210526) internal successors, (155), 75 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2022-01-31 18:00:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-31 18:00:37,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:37,965 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:37,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-31 18:00:37,965 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1384056980, now seen corresponding path program 72 times [2022-01-31 18:00:37,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:37,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50797917] [2022-01-31 18:00:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:37,967 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:37,967 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:37,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:37,972 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:39,821 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:39,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50797917] [2022-01-31 18:00:39,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [50797917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:39,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:39,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-01-31 18:00:39,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763704969] [2022-01-31 18:00:39,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:39,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 18:00:39,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 18:00:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 18:00:39,824 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand has 77 states, 77 states have (on average 2.038961038961039) internal successors, (157), 76 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:42,396 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2022-01-31 18:00:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 18:00:42,397 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.038961038961039) internal successors, (157), 76 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2022-01-31 18:00:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:42,398 INFO L225 Difference]: With dead ends: 174 [2022-01-31 18:00:42,398 INFO L226 Difference]: Without dead ends: 165 [2022-01-31 18:00:42,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 18:00:42,399 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 159 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:42,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 51 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-31 18:00:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2022-01-31 18:00:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.0125) internal successors, (162), 160 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2022-01-31 18:00:42,440 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 161 [2022-01-31 18:00:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:42,440 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2022-01-31 18:00:42,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.038961038961039) internal successors, (157), 76 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2022-01-31 18:00:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-31 18:00:42,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:42,441 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:42,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-31 18:00:42,441 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash 699597418, now seen corresponding path program 73 times [2022-01-31 18:00:42,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:42,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636487735] [2022-01-31 18:00:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:42,443 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:42,443 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:42,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:42,448 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:44,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:44,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636487735] [2022-01-31 18:00:44,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [636487735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:44,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:44,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-01-31 18:00:44,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866291632] [2022-01-31 18:00:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:44,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 18:00:44,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:44,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 18:00:44,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 18:00:44,366 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 78 states, 78 states have (on average 2.0384615384615383) internal successors, (159), 77 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:47,177 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2022-01-31 18:00:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 18:00:47,177 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0384615384615383) internal successors, (159), 77 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2022-01-31 18:00:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:47,178 INFO L225 Difference]: With dead ends: 176 [2022-01-31 18:00:47,178 INFO L226 Difference]: Without dead ends: 167 [2022-01-31 18:00:47,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 18:00:47,179 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 161 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:47,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 36 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-31 18:00:47,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2022-01-31 18:00:47,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2022-01-31 18:00:47,222 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 163 [2022-01-31 18:00:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:47,222 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2022-01-31 18:00:47,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0384615384615383) internal successors, (159), 77 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2022-01-31 18:00:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-31 18:00:47,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:47,223 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:47,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-31 18:00:47,223 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1636713960, now seen corresponding path program 74 times [2022-01-31 18:00:47,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:47,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632217749] [2022-01-31 18:00:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:47,225 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:47,225 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:47,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:47,230 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:49,202 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:49,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632217749] [2022-01-31 18:00:49,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632217749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:49,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:49,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2022-01-31 18:00:49,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387365403] [2022-01-31 18:00:49,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:49,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 18:00:49,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:49,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 18:00:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 18:00:49,204 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 78 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:51,933 INFO L93 Difference]: Finished difference Result 178 states and 180 transitions. [2022-01-31 18:00:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 18:00:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 78 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2022-01-31 18:00:51,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:51,934 INFO L225 Difference]: With dead ends: 178 [2022-01-31 18:00:51,935 INFO L226 Difference]: Without dead ends: 169 [2022-01-31 18:00:51,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 18:00:51,937 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 163 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:51,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 36 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-31 18:00:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2022-01-31 18:00:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 164 states have (on average 1.0121951219512195) internal successors, (166), 164 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2022-01-31 18:00:51,989 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 165 [2022-01-31 18:00:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:51,989 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2022-01-31 18:00:51,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 78 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2022-01-31 18:00:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-31 18:00:51,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:51,990 INFO L514 BasicCegarLoop]: trace histogram [76, 76, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:51,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-31 18:00:51,990 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash 262578662, now seen corresponding path program 75 times [2022-01-31 18:00:51,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:51,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232393578] [2022-01-31 18:00:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:51,992 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:51,993 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:51,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:51,997 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:54,020 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:54,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232393578] [2022-01-31 18:00:54,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [232393578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:54,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:54,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2022-01-31 18:00:54,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286344984] [2022-01-31 18:00:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:54,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 18:00:54,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 18:00:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 18:00:54,023 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 80 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:00:56,742 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2022-01-31 18:00:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 18:00:56,743 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2022-01-31 18:00:56,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:00:56,747 INFO L225 Difference]: With dead ends: 180 [2022-01-31 18:00:56,747 INFO L226 Difference]: Without dead ends: 171 [2022-01-31 18:00:56,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2022-01-31 18:00:56,749 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 165 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:00:56,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 46 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:00:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-31 18:00:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2022-01-31 18:00:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2022-01-31 18:00:56,804 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 167 [2022-01-31 18:00:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:00:56,804 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2022-01-31 18:00:56,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.0375) internal successors, (163), 79 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:00:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2022-01-31 18:00:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-31 18:00:56,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:00:56,805 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:00:56,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-31 18:00:56,805 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:00:56,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:00:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1726482844, now seen corresponding path program 76 times [2022-01-31 18:00:56,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:00:56,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297311646] [2022-01-31 18:00:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:00:56,807 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:00:56,807 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:00:56,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:00:56,812 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:00:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:58,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:00:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:00:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:00:58,883 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:00:58,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297311646] [2022-01-31 18:00:58,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1297311646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:00:58,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:00:58,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2022-01-31 18:00:58,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578148365] [2022-01-31 18:00:58,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:00:58,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 18:00:58,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:00:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 18:00:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 18:00:58,886 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand has 81 states, 81 states have (on average 2.037037037037037) internal successors, (165), 80 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:01,660 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2022-01-31 18:01:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 18:01:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.037037037037037) internal successors, (165), 80 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2022-01-31 18:01:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:01,661 INFO L225 Difference]: With dead ends: 182 [2022-01-31 18:01:01,661 INFO L226 Difference]: Without dead ends: 173 [2022-01-31 18:01:01,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2022-01-31 18:01:01,662 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 167 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:01,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 26 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-31 18:01:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2022-01-31 18:01:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2022-01-31 18:01:01,729 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 169 [2022-01-31 18:01:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:01,729 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2022-01-31 18:01:01,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.037037037037037) internal successors, (165), 80 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2022-01-31 18:01:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-31 18:01:01,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:01,730 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:01,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-31 18:01:01,730 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1954143390, now seen corresponding path program 77 times [2022-01-31 18:01:01,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:01,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201722685] [2022-01-31 18:01:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:01,732 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:01,732 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:01,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:01,737 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:03,825 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:03,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201722685] [2022-01-31 18:01:03,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201722685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:03,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:03,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2022-01-31 18:01:03,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590140224] [2022-01-31 18:01:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:03,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 18:01:03,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 18:01:03,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 18:01:03,827 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand has 82 states, 82 states have (on average 2.0365853658536586) internal successors, (167), 81 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:06,707 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2022-01-31 18:01:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 18:01:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0365853658536586) internal successors, (167), 81 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2022-01-31 18:01:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:06,708 INFO L225 Difference]: With dead ends: 184 [2022-01-31 18:01:06,708 INFO L226 Difference]: Without dead ends: 175 [2022-01-31 18:01:06,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2022-01-31 18:01:06,710 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 169 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:06,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 41 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:06,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-01-31 18:01:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2022-01-31 18:01:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2022-01-31 18:01:06,763 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 171 [2022-01-31 18:01:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:06,764 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2022-01-31 18:01:06,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.0365853658536586) internal successors, (167), 81 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2022-01-31 18:01:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-31 18:01:06,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:06,765 INFO L514 BasicCegarLoop]: trace histogram [79, 79, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:06,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-31 18:01:06,765 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:06,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1692596000, now seen corresponding path program 78 times [2022-01-31 18:01:06,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:06,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349151630] [2022-01-31 18:01:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:06,767 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:06,767 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:06,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:06,772 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:08,913 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:08,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349151630] [2022-01-31 18:01:08,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1349151630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:08,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:08,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2022-01-31 18:01:08,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101449303] [2022-01-31 18:01:08,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:08,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 18:01:08,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:08,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 18:01:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 18:01:08,923 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand has 83 states, 83 states have (on average 2.036144578313253) internal successors, (169), 82 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:11,866 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2022-01-31 18:01:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-31 18:01:11,867 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.036144578313253) internal successors, (169), 82 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2022-01-31 18:01:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:11,867 INFO L225 Difference]: With dead ends: 186 [2022-01-31 18:01:11,867 INFO L226 Difference]: Without dead ends: 177 [2022-01-31 18:01:11,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2022-01-31 18:01:11,869 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 171 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:11,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 56 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-31 18:01:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2022-01-31 18:01:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-01-31 18:01:11,915 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 173 [2022-01-31 18:01:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:11,915 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-01-31 18:01:11,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.036144578313253) internal successors, (169), 82 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-01-31 18:01:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-31 18:01:11,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:11,916 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:11,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-31 18:01:11,917 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash 546342622, now seen corresponding path program 79 times [2022-01-31 18:01:11,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:11,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087525872] [2022-01-31 18:01:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:11,919 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:11,919 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:11,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:11,929 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:14,143 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:14,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087525872] [2022-01-31 18:01:14,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1087525872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:14,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:14,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2022-01-31 18:01:14,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000898337] [2022-01-31 18:01:14,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:14,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-31 18:01:14,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-31 18:01:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2022-01-31 18:01:14,145 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 84 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:17,233 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2022-01-31 18:01:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 18:01:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2022-01-31 18:01:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:17,234 INFO L225 Difference]: With dead ends: 188 [2022-01-31 18:01:17,234 INFO L226 Difference]: Without dead ends: 179 [2022-01-31 18:01:17,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2022-01-31 18:01:17,235 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 173 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:17,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 46 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-31 18:01:17,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2022-01-31 18:01:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2022-01-31 18:01:17,283 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 175 [2022-01-31 18:01:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:17,283 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2022-01-31 18:01:17,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 83 states have internal predecessors, (171), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2022-01-31 18:01:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-31 18:01:17,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:17,284 INFO L514 BasicCegarLoop]: trace histogram [81, 81, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:17,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-31 18:01:17,284 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 387743068, now seen corresponding path program 80 times [2022-01-31 18:01:17,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:17,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033842433] [2022-01-31 18:01:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:17,285 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:17,286 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:17,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:17,290 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:19,588 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033842433] [2022-01-31 18:01:19,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2033842433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:19,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:19,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2022-01-31 18:01:19,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592523587] [2022-01-31 18:01:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:19,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 18:01:19,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 18:01:19,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 18:01:19,591 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand has 85 states, 85 states have (on average 2.0352941176470587) internal successors, (173), 84 states have internal predecessors, (173), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:22,628 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2022-01-31 18:01:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-31 18:01:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0352941176470587) internal successors, (173), 84 states have internal predecessors, (173), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2022-01-31 18:01:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:22,629 INFO L225 Difference]: With dead ends: 190 [2022-01-31 18:01:22,629 INFO L226 Difference]: Without dead ends: 181 [2022-01-31 18:01:22,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2022-01-31 18:01:22,631 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 175 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:22,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 61 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-01-31 18:01:22,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2022-01-31 18:01:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 176 states have (on average 1.0113636363636365) internal successors, (178), 176 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2022-01-31 18:01:22,697 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 177 [2022-01-31 18:01:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:22,697 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2022-01-31 18:01:22,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0352941176470587) internal successors, (173), 84 states have internal predecessors, (173), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2022-01-31 18:01:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-31 18:01:22,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:22,698 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:22,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-31 18:01:22,698 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:22,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1702572966, now seen corresponding path program 81 times [2022-01-31 18:01:22,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:22,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814277439] [2022-01-31 18:01:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:22,700 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:22,700 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:22,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:22,704 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:25,028 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:25,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814277439] [2022-01-31 18:01:25,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [814277439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:25,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:25,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2022-01-31 18:01:25,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900087852] [2022-01-31 18:01:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:25,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-31 18:01:25,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-31 18:01:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 18:01:25,030 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 86 states, 86 states have (on average 2.0348837209302326) internal successors, (175), 85 states have internal predecessors, (175), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:28,180 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2022-01-31 18:01:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 18:01:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0348837209302326) internal successors, (175), 85 states have internal predecessors, (175), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2022-01-31 18:01:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:28,181 INFO L225 Difference]: With dead ends: 192 [2022-01-31 18:01:28,181 INFO L226 Difference]: Without dead ends: 183 [2022-01-31 18:01:28,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2022-01-31 18:01:28,182 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 177 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:28,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 46 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-31 18:01:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2022-01-31 18:01:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 178 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2022-01-31 18:01:28,252 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 179 [2022-01-31 18:01:28,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2022-01-31 18:01:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.0348837209302326) internal successors, (175), 85 states have internal predecessors, (175), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2022-01-31 18:01:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-31 18:01:28,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:28,254 INFO L514 BasicCegarLoop]: trace histogram [83, 83, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:28,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-31 18:01:28,254 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash -451587112, now seen corresponding path program 82 times [2022-01-31 18:01:28,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451530666] [2022-01-31 18:01:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:28,256 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:28,256 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:28,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:28,262 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:30,610 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:30,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451530666] [2022-01-31 18:01:30,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1451530666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:30,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:30,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2022-01-31 18:01:30,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293622236] [2022-01-31 18:01:30,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:30,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 18:01:30,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:30,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 18:01:30,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 18:01:30,613 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand has 87 states, 87 states have (on average 2.0344827586206895) internal successors, (177), 86 states have internal predecessors, (177), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:33,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:33,838 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2022-01-31 18:01:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-31 18:01:33,838 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0344827586206895) internal successors, (177), 86 states have internal predecessors, (177), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2022-01-31 18:01:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:33,839 INFO L225 Difference]: With dead ends: 194 [2022-01-31 18:01:33,839 INFO L226 Difference]: Without dead ends: 185 [2022-01-31 18:01:33,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2022-01-31 18:01:33,840 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 179 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:33,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 41 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-01-31 18:01:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-01-31 18:01:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 180 states have (on average 1.011111111111111) internal successors, (182), 180 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2022-01-31 18:01:33,900 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 181 [2022-01-31 18:01:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:33,901 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2022-01-31 18:01:33,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.0344827586206895) internal successors, (177), 86 states have internal predecessors, (177), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2022-01-31 18:01:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-31 18:01:33,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:33,902 INFO L514 BasicCegarLoop]: trace histogram [84, 84, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:33,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-31 18:01:33,902 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -845024298, now seen corresponding path program 83 times [2022-01-31 18:01:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:33,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886991676] [2022-01-31 18:01:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:33,904 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:33,904 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:33,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:33,909 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:36,293 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:36,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886991676] [2022-01-31 18:01:36,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [886991676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:36,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:36,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2022-01-31 18:01:36,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179461893] [2022-01-31 18:01:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:36,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-31 18:01:36,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:36,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-31 18:01:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 18:01:36,296 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 88 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:39,593 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2022-01-31 18:01:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 18:01:39,594 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2022-01-31 18:01:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:39,595 INFO L225 Difference]: With dead ends: 196 [2022-01-31 18:01:39,595 INFO L226 Difference]: Without dead ends: 187 [2022-01-31 18:01:39,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2022-01-31 18:01:39,597 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 181 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:39,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 51 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:39,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-01-31 18:01:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2022-01-31 18:01:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2022-01-31 18:01:39,659 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 183 [2022-01-31 18:01:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:39,660 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2022-01-31 18:01:39,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.034090909090909) internal successors, (179), 87 states have internal predecessors, (179), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2022-01-31 18:01:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-31 18:01:39,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:39,661 INFO L514 BasicCegarLoop]: trace histogram [85, 85, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:39,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-31 18:01:39,661 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:39,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:39,661 INFO L85 PathProgramCache]: Analyzing trace with hash -981037996, now seen corresponding path program 84 times [2022-01-31 18:01:39,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:39,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961974891] [2022-01-31 18:01:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:39,663 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:39,663 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:39,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:39,669 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:42,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:42,149 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:42,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961974891] [2022-01-31 18:01:42,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1961974891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:42,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:42,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2022-01-31 18:01:42,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992860708] [2022-01-31 18:01:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:42,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 18:01:42,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 18:01:42,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 18:01:42,151 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand has 89 states, 89 states have (on average 2.033707865168539) internal successors, (181), 88 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:45,530 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2022-01-31 18:01:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-31 18:01:45,530 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.033707865168539) internal successors, (181), 88 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2022-01-31 18:01:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:45,531 INFO L225 Difference]: With dead ends: 198 [2022-01-31 18:01:45,531 INFO L226 Difference]: Without dead ends: 189 [2022-01-31 18:01:45,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2022-01-31 18:01:45,533 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 183 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:45,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 46 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:45,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-31 18:01:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2022-01-31 18:01:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 184 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions. [2022-01-31 18:01:45,596 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 185 [2022-01-31 18:01:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:45,596 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 189 transitions. [2022-01-31 18:01:45,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.033707865168539) internal successors, (181), 88 states have internal predecessors, (181), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 189 transitions. [2022-01-31 18:01:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-31 18:01:45,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:45,597 INFO L514 BasicCegarLoop]: trace histogram [86, 86, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:45,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-31 18:01:45,597 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1453784402, now seen corresponding path program 85 times [2022-01-31 18:01:45,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:45,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332139105] [2022-01-31 18:01:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:45,599 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:45,599 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:45,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:45,603 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:48,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:48,087 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:48,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332139105] [2022-01-31 18:01:48,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1332139105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:48,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:48,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2022-01-31 18:01:48,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508411964] [2022-01-31 18:01:48,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:48,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-31 18:01:48,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-31 18:01:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 18:01:48,089 INFO L87 Difference]: Start difference. First operand 188 states and 189 transitions. Second operand has 90 states, 90 states have (on average 2.033333333333333) internal successors, (183), 89 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:51,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:51,457 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2022-01-31 18:01:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 18:01:51,457 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.033333333333333) internal successors, (183), 89 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187 [2022-01-31 18:01:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:51,458 INFO L225 Difference]: With dead ends: 200 [2022-01-31 18:01:51,458 INFO L226 Difference]: Without dead ends: 191 [2022-01-31 18:01:51,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2022-01-31 18:01:51,459 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 185 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:51,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 46 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-01-31 18:01:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2022-01-31 18:01:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.010752688172043) internal successors, (188), 186 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2022-01-31 18:01:51,515 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 187 [2022-01-31 18:01:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:51,515 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2022-01-31 18:01:51,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.033333333333333) internal successors, (183), 89 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2022-01-31 18:01:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-31 18:01:51,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:51,516 INFO L514 BasicCegarLoop]: trace histogram [87, 87, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:51,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-31 18:01:51,516 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 560932560, now seen corresponding path program 86 times [2022-01-31 18:01:51,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:51,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55510873] [2022-01-31 18:01:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:51,517 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:51,517 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:51,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:51,522 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:01:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:01:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:01:54,032 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:01:54,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55510873] [2022-01-31 18:01:54,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [55510873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:01:54,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:01:54,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2022-01-31 18:01:54,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884803933] [2022-01-31 18:01:54,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:01:54,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 18:01:54,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:01:54,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 18:01:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 18:01:54,035 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand has 91 states, 91 states have (on average 2.032967032967033) internal successors, (185), 90 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:01:57,554 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2022-01-31 18:01:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-31 18:01:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.032967032967033) internal successors, (185), 90 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2022-01-31 18:01:57,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:01:57,555 INFO L225 Difference]: With dead ends: 202 [2022-01-31 18:01:57,555 INFO L226 Difference]: Without dead ends: 193 [2022-01-31 18:01:57,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2022-01-31 18:01:57,557 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 187 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:01:57,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 56 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:01:57,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-31 18:01:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2022-01-31 18:01:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2022-01-31 18:01:57,635 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 189 [2022-01-31 18:01:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:01:57,636 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2022-01-31 18:01:57,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.032967032967033) internal successors, (185), 90 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:01:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2022-01-31 18:01:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-31 18:01:57,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:01:57,637 INFO L514 BasicCegarLoop]: trace histogram [88, 88, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:01:57,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-31 18:01:57,637 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:01:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:01:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1523771598, now seen corresponding path program 87 times [2022-01-31 18:01:57,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:01:57,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121399721] [2022-01-31 18:01:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:01:57,639 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:01:57,639 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:01:57,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:01:57,646 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:01:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:00,266 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:00,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121399721] [2022-01-31 18:02:00,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1121399721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:00,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:00,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2022-01-31 18:02:00,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962867292] [2022-01-31 18:02:00,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:00,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-31 18:02:00,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-31 18:02:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 18:02:00,269 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 92 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:03,856 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2022-01-31 18:02:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 18:02:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2022-01-31 18:02:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:03,858 INFO L225 Difference]: With dead ends: 204 [2022-01-31 18:02:03,858 INFO L226 Difference]: Without dead ends: 195 [2022-01-31 18:02:03,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2022-01-31 18:02:03,862 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 189 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:03,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 41 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-31 18:02:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2022-01-31 18:02:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 190 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2022-01-31 18:02:03,930 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 191 [2022-01-31 18:02:03,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:03,930 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2022-01-31 18:02:03,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.032608695652174) internal successors, (187), 91 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:03,930 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2022-01-31 18:02:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-31 18:02:03,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:03,931 INFO L514 BasicCegarLoop]: trace histogram [89, 89, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:03,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-31 18:02:03,931 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:03,931 INFO L85 PathProgramCache]: Analyzing trace with hash -900848820, now seen corresponding path program 88 times [2022-01-31 18:02:03,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:03,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989290892] [2022-01-31 18:02:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:03,933 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:03,933 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:03,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:03,939 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:06,582 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:06,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989290892] [2022-01-31 18:02:06,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1989290892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:06,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:06,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2022-01-31 18:02:06,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19259336] [2022-01-31 18:02:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:06,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 18:02:06,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 18:02:06,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 18:02:06,584 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand has 93 states, 93 states have (on average 2.032258064516129) internal successors, (189), 92 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:10,252 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2022-01-31 18:02:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-31 18:02:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.032258064516129) internal successors, (189), 92 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2022-01-31 18:02:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:10,253 INFO L225 Difference]: With dead ends: 206 [2022-01-31 18:02:10,253 INFO L226 Difference]: Without dead ends: 197 [2022-01-31 18:02:10,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2022-01-31 18:02:10,254 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 191 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:10,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 46 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-01-31 18:02:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2022-01-31 18:02:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2022-01-31 18:02:10,313 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 193 [2022-01-31 18:02:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:10,313 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2022-01-31 18:02:10,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.032258064516129) internal successors, (189), 92 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2022-01-31 18:02:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-31 18:02:10,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:10,314 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:10,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-31 18:02:10,314 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:10,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1206171210, now seen corresponding path program 89 times [2022-01-31 18:02:10,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:10,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384855394] [2022-01-31 18:02:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:10,316 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:10,316 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:10,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:10,323 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:13,074 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:13,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384855394] [2022-01-31 18:02:13,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384855394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:13,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:13,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2022-01-31 18:02:13,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342877419] [2022-01-31 18:02:13,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:13,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-31 18:02:13,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-31 18:02:13,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 18:02:13,076 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand has 94 states, 94 states have (on average 2.0319148936170213) internal successors, (191), 93 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:16,776 INFO L93 Difference]: Finished difference Result 208 states and 210 transitions. [2022-01-31 18:02:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 18:02:16,776 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0319148936170213) internal successors, (191), 93 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2022-01-31 18:02:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:16,777 INFO L225 Difference]: With dead ends: 208 [2022-01-31 18:02:16,777 INFO L226 Difference]: Without dead ends: 199 [2022-01-31 18:02:16,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2022-01-31 18:02:16,779 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 193 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:16,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 41 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-31 18:02:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2022-01-31 18:02:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.0103092783505154) internal successors, (196), 194 states have internal predecessors, (196), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2022-01-31 18:02:16,845 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 195 [2022-01-31 18:02:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:16,845 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2022-01-31 18:02:16,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.0319148936170213) internal successors, (191), 93 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2022-01-31 18:02:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-31 18:02:16,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:16,846 INFO L514 BasicCegarLoop]: trace histogram [91, 91, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:16,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-31 18:02:16,846 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:16,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1172143672, now seen corresponding path program 90 times [2022-01-31 18:02:16,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:16,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712031252] [2022-01-31 18:02:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:16,848 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:16,848 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:16,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:16,852 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:19,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:19,567 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:19,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712031252] [2022-01-31 18:02:19,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [712031252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:19,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:19,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2022-01-31 18:02:19,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454311883] [2022-01-31 18:02:19,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:19,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 18:02:19,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 18:02:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 18:02:19,569 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand has 95 states, 95 states have (on average 2.031578947368421) internal successors, (193), 94 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:23,296 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2022-01-31 18:02:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-31 18:02:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.031578947368421) internal successors, (193), 94 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2022-01-31 18:02:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:23,297 INFO L225 Difference]: With dead ends: 210 [2022-01-31 18:02:23,298 INFO L226 Difference]: Without dead ends: 201 [2022-01-31 18:02:23,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2022-01-31 18:02:23,299 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 195 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:23,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 41 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-31 18:02:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2022-01-31 18:02:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.010204081632653) internal successors, (198), 196 states have internal predecessors, (198), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2022-01-31 18:02:23,366 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 197 [2022-01-31 18:02:23,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:23,366 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2022-01-31 18:02:23,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.031578947368421) internal successors, (193), 94 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2022-01-31 18:02:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-31 18:02:23,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:23,367 INFO L514 BasicCegarLoop]: trace histogram [92, 92, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:23,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-31 18:02:23,367 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:23,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1810143802, now seen corresponding path program 91 times [2022-01-31 18:02:23,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:23,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747708586] [2022-01-31 18:02:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:23,369 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:23,369 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:23,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:23,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:26,222 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:26,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747708586] [2022-01-31 18:02:26,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1747708586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:26,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:26,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [96] imperfect sequences [] total 96 [2022-01-31 18:02:26,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933210174] [2022-01-31 18:02:26,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:26,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-31 18:02:26,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-31 18:02:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 18:02:26,225 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 96 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:30,098 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2022-01-31 18:02:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 18:02:30,098 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2022-01-31 18:02:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:30,099 INFO L225 Difference]: With dead ends: 212 [2022-01-31 18:02:30,099 INFO L226 Difference]: Without dead ends: 203 [2022-01-31 18:02:30,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2022-01-31 18:02:30,100 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 197 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:30,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 41 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-01-31 18:02:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2022-01-31 18:02:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2022-01-31 18:02:30,168 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 199 [2022-01-31 18:02:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:30,168 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2022-01-31 18:02:30,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.03125) internal successors, (195), 95 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2022-01-31 18:02:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-31 18:02:30,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:30,169 INFO L514 BasicCegarLoop]: trace histogram [93, 93, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:30,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-31 18:02:30,169 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -747945404, now seen corresponding path program 92 times [2022-01-31 18:02:30,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:30,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144167647] [2022-01-31 18:02:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:30,172 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:30,172 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:30,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:30,177 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:33,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:33,077 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:33,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144167647] [2022-01-31 18:02:33,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1144167647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:33,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:33,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2022-01-31 18:02:33,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6147923] [2022-01-31 18:02:33,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:33,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 18:02:33,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:33,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 18:02:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 18:02:33,079 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand has 97 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 96 states have internal predecessors, (197), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:37,031 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2022-01-31 18:02:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 18:02:37,031 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 96 states have internal predecessors, (197), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2022-01-31 18:02:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:37,032 INFO L225 Difference]: With dead ends: 214 [2022-01-31 18:02:37,032 INFO L226 Difference]: Without dead ends: 205 [2022-01-31 18:02:37,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-01-31 18:02:37,034 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 199 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:37,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 41 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-01-31 18:02:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2022-01-31 18:02:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 1.01) internal successors, (202), 200 states have internal predecessors, (202), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2022-01-31 18:02:37,128 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 201 [2022-01-31 18:02:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:37,128 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2022-01-31 18:02:37,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 96 states have internal predecessors, (197), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2022-01-31 18:02:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-31 18:02:37,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:37,129 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:37,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-31 18:02:37,130 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2117465922, now seen corresponding path program 93 times [2022-01-31 18:02:37,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:37,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090842862] [2022-01-31 18:02:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:37,132 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:37,132 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:37,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:37,138 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:40,081 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:40,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090842862] [2022-01-31 18:02:40,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1090842862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:40,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:40,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [98] imperfect sequences [] total 98 [2022-01-31 18:02:40,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624127109] [2022-01-31 18:02:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:40,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 18:02:40,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 18:02:40,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 18:02:40,083 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand has 98 states, 98 states have (on average 2.0306122448979593) internal successors, (199), 97 states have internal predecessors, (199), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:44,026 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2022-01-31 18:02:44,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 18:02:44,026 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0306122448979593) internal successors, (199), 97 states have internal predecessors, (199), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2022-01-31 18:02:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:44,027 INFO L225 Difference]: With dead ends: 216 [2022-01-31 18:02:44,027 INFO L226 Difference]: Without dead ends: 207 [2022-01-31 18:02:44,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2022-01-31 18:02:44,029 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 201 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:44,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 41 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-31 18:02:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2022-01-31 18:02:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2022-01-31 18:02:44,092 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 203 [2022-01-31 18:02:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:44,092 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2022-01-31 18:02:44,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.0306122448979593) internal successors, (199), 97 states have internal predecessors, (199), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2022-01-31 18:02:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-31 18:02:44,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:44,093 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:44,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-31 18:02:44,093 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:44,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1591253824, now seen corresponding path program 94 times [2022-01-31 18:02:44,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:44,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77480417] [2022-01-31 18:02:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:44,095 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:44,095 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:44,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:44,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:47,065 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:47,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77480417] [2022-01-31 18:02:47,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [77480417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:47,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:47,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2022-01-31 18:02:47,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578932611] [2022-01-31 18:02:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:47,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 18:02:47,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 18:02:47,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 18:02:47,067 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand has 99 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 98 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:51,172 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2022-01-31 18:02:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-31 18:02:51,172 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 98 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2022-01-31 18:02:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:51,173 INFO L225 Difference]: With dead ends: 218 [2022-01-31 18:02:51,173 INFO L226 Difference]: Without dead ends: 209 [2022-01-31 18:02:51,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2022-01-31 18:02:51,175 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 203 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:51,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 46 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-31 18:02:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2022-01-31 18:02:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 204 states have internal predecessors, (206), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2022-01-31 18:02:51,241 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 205 [2022-01-31 18:02:51,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:51,241 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2022-01-31 18:02:51,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 98 states have internal predecessors, (201), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2022-01-31 18:02:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-31 18:02:51,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:51,242 INFO L514 BasicCegarLoop]: trace histogram [96, 96, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:51,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-31 18:02:51,242 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash -848074050, now seen corresponding path program 95 times [2022-01-31 18:02:51,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:51,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949125358] [2022-01-31 18:02:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:51,244 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:51,244 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:51,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:51,258 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:02:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:02:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:02:54,349 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:02:54,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949125358] [2022-01-31 18:02:54,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [949125358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:02:54,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:02:54,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [100] imperfect sequences [] total 100 [2022-01-31 18:02:54,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847648910] [2022-01-31 18:02:54,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:02:54,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-31 18:02:54,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:02:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-31 18:02:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 18:02:54,352 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 100 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:02:58,536 INFO L93 Difference]: Finished difference Result 220 states and 222 transitions. [2022-01-31 18:02:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 18:02:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2022-01-31 18:02:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:02:58,538 INFO L225 Difference]: With dead ends: 220 [2022-01-31 18:02:58,538 INFO L226 Difference]: Without dead ends: 211 [2022-01-31 18:02:58,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2022-01-31 18:02:58,540 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 205 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:02:58,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 41 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:02:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-01-31 18:02:58,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2022-01-31 18:02:58,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 206 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2022-01-31 18:02:58,617 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 207 [2022-01-31 18:02:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:02:58,617 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2022-01-31 18:02:58,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.03) internal successors, (203), 99 states have internal predecessors, (203), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:02:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2022-01-31 18:02:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-31 18:02:58,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:02:58,618 INFO L514 BasicCegarLoop]: trace histogram [97, 97, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:02:58,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-31 18:02:58,618 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:02:58,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:02:58,618 INFO L85 PathProgramCache]: Analyzing trace with hash 383117628, now seen corresponding path program 96 times [2022-01-31 18:02:58,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:02:58,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328998767] [2022-01-31 18:02:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:02:58,620 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:02:58,620 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:02:58,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:02:58,626 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:02:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:01,750 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:01,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328998767] [2022-01-31 18:03:01,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1328998767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:01,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:01,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2022-01-31 18:03:01,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620198824] [2022-01-31 18:03:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:01,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 18:03:01,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 18:03:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 18:03:01,753 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand has 101 states, 101 states have (on average 2.0297029702970297) internal successors, (205), 100 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:05,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:03:05,942 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2022-01-31 18:03:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-31 18:03:05,942 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0297029702970297) internal successors, (205), 100 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2022-01-31 18:03:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:03:05,943 INFO L225 Difference]: With dead ends: 222 [2022-01-31 18:03:05,943 INFO L226 Difference]: Without dead ends: 213 [2022-01-31 18:03:05,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2022-01-31 18:03:05,945 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 207 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:03:05,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 46 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:03:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-31 18:03:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2022-01-31 18:03:06,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 208 states have internal predecessors, (210), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2022-01-31 18:03:06,023 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 209 [2022-01-31 18:03:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:03:06,023 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2022-01-31 18:03:06,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0297029702970297) internal successors, (205), 100 states have internal predecessors, (205), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2022-01-31 18:03:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-01-31 18:03:06,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:03:06,024 INFO L514 BasicCegarLoop]: trace histogram [98, 98, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:03:06,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-31 18:03:06,024 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:03:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:03:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1852653510, now seen corresponding path program 97 times [2022-01-31 18:03:06,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:03:06,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564120017] [2022-01-31 18:03:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:03:06,026 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:03:06,026 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:03:06,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:03:06,032 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:03:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:09,256 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:09,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564120017] [2022-01-31 18:03:09,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [564120017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:09,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:09,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2022-01-31 18:03:09,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471876820] [2022-01-31 18:03:09,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:09,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-01-31 18:03:09,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:09,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-01-31 18:03:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 18:03:09,258 INFO L87 Difference]: Start difference. First operand 212 states and 213 transitions. Second operand has 102 states, 102 states have (on average 2.0294117647058822) internal successors, (207), 101 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:03:13,569 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2022-01-31 18:03:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 18:03:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0294117647058822) internal successors, (207), 101 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2022-01-31 18:03:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:03:13,571 INFO L225 Difference]: With dead ends: 224 [2022-01-31 18:03:13,571 INFO L226 Difference]: Without dead ends: 215 [2022-01-31 18:03:13,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2022-01-31 18:03:13,573 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 209 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:03:13,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 36 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:03:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-01-31 18:03:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2022-01-31 18:03:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 210 states have internal predecessors, (212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2022-01-31 18:03:13,642 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 211 [2022-01-31 18:03:13,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:03:13,642 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2022-01-31 18:03:13,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.0294117647058822) internal successors, (207), 101 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2022-01-31 18:03:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-31 18:03:13,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:03:13,643 INFO L514 BasicCegarLoop]: trace histogram [99, 99, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:03:13,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-31 18:03:13,643 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:03:13,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:03:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1349898168, now seen corresponding path program 98 times [2022-01-31 18:03:13,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:03:13,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703252840] [2022-01-31 18:03:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:03:13,645 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:03:13,645 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:03:13,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:03:13,652 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:03:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:16,859 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:16,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703252840] [2022-01-31 18:03:16,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1703252840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:16,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:16,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2022-01-31 18:03:16,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329717778] [2022-01-31 18:03:16,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:16,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 18:03:16,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 18:03:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 18:03:16,862 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand has 103 states, 103 states have (on average 2.029126213592233) internal successors, (209), 102 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:03:21,251 INFO L93 Difference]: Finished difference Result 226 states and 228 transitions. [2022-01-31 18:03:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-31 18:03:21,251 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.029126213592233) internal successors, (209), 102 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2022-01-31 18:03:21,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:03:21,252 INFO L225 Difference]: With dead ends: 226 [2022-01-31 18:03:21,252 INFO L226 Difference]: Without dead ends: 217 [2022-01-31 18:03:21,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-01-31 18:03:21,255 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 211 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:03:21,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 31 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:03:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-31 18:03:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2022-01-31 18:03:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-01-31 18:03:21,341 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 213 [2022-01-31 18:03:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:03:21,341 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-01-31 18:03:21,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.029126213592233) internal successors, (209), 102 states have internal predecessors, (209), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-01-31 18:03:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-31 18:03:21,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:03:21,342 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:03:21,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-31 18:03:21,342 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:03:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:03:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash -489490506, now seen corresponding path program 99 times [2022-01-31 18:03:21,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:03:21,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620023236] [2022-01-31 18:03:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:03:21,345 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:03:21,345 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:03:21,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:03:21,351 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:03:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:24,661 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:24,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620023236] [2022-01-31 18:03:24,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [620023236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:24,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:24,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-01-31 18:03:24,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629484083] [2022-01-31 18:03:24,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:24,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-31 18:03:24,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:24,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-31 18:03:24,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 18:03:24,664 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 104 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:03:29,138 INFO L93 Difference]: Finished difference Result 228 states and 230 transitions. [2022-01-31 18:03:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 18:03:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2022-01-31 18:03:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:03:29,139 INFO L225 Difference]: With dead ends: 228 [2022-01-31 18:03:29,139 INFO L226 Difference]: Without dead ends: 219 [2022-01-31 18:03:29,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-01-31 18:03:29,141 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 213 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:03:29,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 56 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:03:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-01-31 18:03:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2022-01-31 18:03:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 214 states have internal predecessors, (216), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2022-01-31 18:03:29,222 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 215 [2022-01-31 18:03:29,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:03:29,222 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2022-01-31 18:03:29,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.0288461538461537) internal successors, (211), 103 states have internal predecessors, (211), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:29,222 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2022-01-31 18:03:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-31 18:03:29,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:03:29,223 INFO L514 BasicCegarLoop]: trace histogram [101, 101, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:03:29,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-31 18:03:29,223 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:03:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:03:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1384519732, now seen corresponding path program 100 times [2022-01-31 18:03:29,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:03:29,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539555442] [2022-01-31 18:03:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:03:29,224 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:03:29,224 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:03:29,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:03:29,230 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:03:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:32,556 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:32,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539555442] [2022-01-31 18:03:32,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [539555442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:32,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:32,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2022-01-31 18:03:32,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375946310] [2022-01-31 18:03:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:32,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 18:03:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 18:03:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 18:03:32,558 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand has 105 states, 105 states have (on average 2.0285714285714285) internal successors, (213), 104 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:03:37,159 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2022-01-31 18:03:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-31 18:03:37,159 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0285714285714285) internal successors, (213), 104 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2022-01-31 18:03:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:03:37,160 INFO L225 Difference]: With dead ends: 230 [2022-01-31 18:03:37,160 INFO L226 Difference]: Without dead ends: 221 [2022-01-31 18:03:37,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2022-01-31 18:03:37,161 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 215 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:03:37,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 31 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:03:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-01-31 18:03:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2022-01-31 18:03:37,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 216 states have internal predecessors, (218), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2022-01-31 18:03:37,234 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 217 [2022-01-31 18:03:37,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:03:37,234 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2022-01-31 18:03:37,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.0285714285714285) internal successors, (213), 104 states have internal predecessors, (213), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2022-01-31 18:03:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-31 18:03:37,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:03:37,235 INFO L514 BasicCegarLoop]: trace histogram [102, 102, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:03:37,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-31 18:03:37,235 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:03:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:03:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1577905870, now seen corresponding path program 101 times [2022-01-31 18:03:37,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:03:37,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837307248] [2022-01-31 18:03:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:03:37,237 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:03:37,237 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:03:37,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:03:37,244 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:03:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:40,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:40,656 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:40,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837307248] [2022-01-31 18:03:40,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [837307248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:40,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:40,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [106] imperfect sequences [] total 106 [2022-01-31 18:03:40,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008354092] [2022-01-31 18:03:40,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:40,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-31 18:03:40,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:40,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-31 18:03:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 18:03:40,659 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand has 106 states, 106 states have (on average 2.0283018867924527) internal successors, (215), 105 states have internal predecessors, (215), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:03:45,265 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2022-01-31 18:03:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 18:03:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0283018867924527) internal successors, (215), 105 states have internal predecessors, (215), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2022-01-31 18:03:45,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:03:45,266 INFO L225 Difference]: With dead ends: 232 [2022-01-31 18:03:45,266 INFO L226 Difference]: Without dead ends: 223 [2022-01-31 18:03:45,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2022-01-31 18:03:45,268 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 217 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:03:45,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 56 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:03:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-31 18:03:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2022-01-31 18:03:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.0091743119266054) internal successors, (220), 218 states have internal predecessors, (220), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2022-01-31 18:03:45,350 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 219 [2022-01-31 18:03:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:03:45,350 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2022-01-31 18:03:45,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.0283018867924527) internal successors, (215), 105 states have internal predecessors, (215), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2022-01-31 18:03:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-31 18:03:45,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:03:45,351 INFO L514 BasicCegarLoop]: trace histogram [103, 103, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:03:45,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-31 18:03:45,351 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:03:45,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:03:45,352 INFO L85 PathProgramCache]: Analyzing trace with hash -905592144, now seen corresponding path program 102 times [2022-01-31 18:03:45,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:03:45,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213096977] [2022-01-31 18:03:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:03:45,353 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:03:45,353 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:03:45,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:03:45,360 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:03:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:48,817 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:48,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213096977] [2022-01-31 18:03:48,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [213096977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:48,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:48,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2022-01-31 18:03:48,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290998727] [2022-01-31 18:03:48,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:48,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 18:03:48,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:48,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 18:03:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 18:03:48,820 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand has 107 states, 107 states have (on average 2.02803738317757) internal successors, (217), 106 states have internal predecessors, (217), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:03:53,462 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2022-01-31 18:03:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-31 18:03:53,462 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.02803738317757) internal successors, (217), 106 states have internal predecessors, (217), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2022-01-31 18:03:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:03:53,463 INFO L225 Difference]: With dead ends: 234 [2022-01-31 18:03:53,463 INFO L226 Difference]: Without dead ends: 225 [2022-01-31 18:03:53,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2022-01-31 18:03:53,465 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 219 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:03:53,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 36 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:03:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-31 18:03:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2022-01-31 18:03:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 220 states have (on average 1.009090909090909) internal successors, (222), 220 states have internal predecessors, (222), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2022-01-31 18:03:53,541 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 221 [2022-01-31 18:03:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:03:53,541 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2022-01-31 18:03:53,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.02803738317757) internal successors, (217), 106 states have internal predecessors, (217), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:03:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2022-01-31 18:03:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-31 18:03:53,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:03:53,542 INFO L514 BasicCegarLoop]: trace histogram [104, 104, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:03:53,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-31 18:03:53,542 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:03:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:03:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 942804142, now seen corresponding path program 103 times [2022-01-31 18:03:53,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:03:53,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893681207] [2022-01-31 18:03:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:03:53,543 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:03:53,543 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:03:53,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:03:53,550 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:03:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:03:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:03:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:03:57,060 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:03:57,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893681207] [2022-01-31 18:03:57,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [893681207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:03:57,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:03:57,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [108] imperfect sequences [] total 108 [2022-01-31 18:03:57,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211951668] [2022-01-31 18:03:57,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:03:57,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-31 18:03:57,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:03:57,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-31 18:03:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 18:03:57,063 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 108 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:04:01,809 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2022-01-31 18:04:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 18:04:01,809 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2022-01-31 18:04:01,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:04:01,810 INFO L225 Difference]: With dead ends: 236 [2022-01-31 18:04:01,810 INFO L226 Difference]: Without dead ends: 227 [2022-01-31 18:04:01,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2022-01-31 18:04:01,812 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 221 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:04:01,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 31 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:04:01,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-31 18:04:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2022-01-31 18:04:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2022-01-31 18:04:01,890 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 223 [2022-01-31 18:04:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:04:01,891 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2022-01-31 18:04:01,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 2.0277777777777777) internal successors, (219), 107 states have internal predecessors, (219), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2022-01-31 18:04:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-31 18:04:01,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:04:01,891 INFO L514 BasicCegarLoop]: trace histogram [105, 105, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:04:01,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-31 18:04:01,891 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:04:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:04:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash -864825556, now seen corresponding path program 104 times [2022-01-31 18:04:01,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:04:01,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470141354] [2022-01-31 18:04:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:04:01,893 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:04:01,893 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:04:01,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:04:01,908 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:04:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:04:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:04:05,505 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:04:05,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470141354] [2022-01-31 18:04:05,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1470141354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:04:05,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:04:05,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2022-01-31 18:04:05,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096495458] [2022-01-31 18:04:05,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:04:05,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 18:04:05,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:04:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 18:04:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 18:04:05,508 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 108 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:04:10,314 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2022-01-31 18:04:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-31 18:04:10,315 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 108 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2022-01-31 18:04:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:04:10,315 INFO L225 Difference]: With dead ends: 238 [2022-01-31 18:04:10,315 INFO L226 Difference]: Without dead ends: 229 [2022-01-31 18:04:10,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2022-01-31 18:04:10,318 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 223 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:04:10,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 31 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:04:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-31 18:04:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2022-01-31 18:04:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 224 states have (on average 1.0089285714285714) internal successors, (226), 224 states have internal predecessors, (226), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2022-01-31 18:04:10,406 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 225 [2022-01-31 18:04:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:04:10,407 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2022-01-31 18:04:10,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 108 states have internal predecessors, (221), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2022-01-31 18:04:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-01-31 18:04:10,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:04:10,407 INFO L514 BasicCegarLoop]: trace histogram [106, 106, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:04:10,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-31 18:04:10,407 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:04:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:04:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1464789546, now seen corresponding path program 105 times [2022-01-31 18:04:10,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:04:10,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216143575] [2022-01-31 18:04:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:04:10,409 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:04:10,409 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:04:10,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:04:10,415 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:04:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:04:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:04:14,038 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:04:14,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216143575] [2022-01-31 18:04:14,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1216143575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:04:14,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:04:14,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [110] imperfect sequences [] total 110 [2022-01-31 18:04:14,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239690156] [2022-01-31 18:04:14,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:04:14,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-31 18:04:14,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:04:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-31 18:04:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 18:04:14,040 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand has 110 states, 110 states have (on average 2.0272727272727273) internal successors, (223), 109 states have internal predecessors, (223), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:04:18,975 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2022-01-31 18:04:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 18:04:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.0272727272727273) internal successors, (223), 109 states have internal predecessors, (223), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2022-01-31 18:04:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:04:18,976 INFO L225 Difference]: With dead ends: 240 [2022-01-31 18:04:18,976 INFO L226 Difference]: Without dead ends: 231 [2022-01-31 18:04:18,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2022-01-31 18:04:18,978 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 225 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:04:18,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 41 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:04:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-01-31 18:04:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2022-01-31 18:04:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 226 states have (on average 1.008849557522124) internal successors, (228), 226 states have internal predecessors, (228), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2022-01-31 18:04:19,071 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 227 [2022-01-31 18:04:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:04:19,071 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2022-01-31 18:04:19,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.0272727272727273) internal successors, (223), 109 states have internal predecessors, (223), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2022-01-31 18:04:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-31 18:04:19,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:04:19,072 INFO L514 BasicCegarLoop]: trace histogram [107, 107, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:04:19,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-31 18:04:19,072 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:04:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:04:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1748025944, now seen corresponding path program 106 times [2022-01-31 18:04:19,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:04:19,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609392437] [2022-01-31 18:04:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:04:19,073 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:04:19,073 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:04:19,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:04:19,080 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:04:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:04:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:04:22,854 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:04:22,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609392437] [2022-01-31 18:04:22,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [609392437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:04:22,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:04:22,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2022-01-31 18:04:22,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269058226] [2022-01-31 18:04:22,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:04:22,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 18:04:22,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:04:22,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 18:04:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 18:04:22,857 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand has 111 states, 111 states have (on average 2.027027027027027) internal successors, (225), 110 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:04:28,015 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2022-01-31 18:04:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-31 18:04:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.027027027027027) internal successors, (225), 110 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2022-01-31 18:04:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:04:28,016 INFO L225 Difference]: With dead ends: 242 [2022-01-31 18:04:28,016 INFO L226 Difference]: Without dead ends: 233 [2022-01-31 18:04:28,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2022-01-31 18:04:28,018 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 227 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:04:28,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 61 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:04:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-01-31 18:04:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2022-01-31 18:04:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 228 states have internal predecessors, (230), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2022-01-31 18:04:28,115 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 229 [2022-01-31 18:04:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:04:28,115 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2022-01-31 18:04:28,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.027027027027027) internal successors, (225), 110 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:28,115 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2022-01-31 18:04:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-31 18:04:28,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:04:28,116 INFO L514 BasicCegarLoop]: trace histogram [108, 108, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:04:28,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-31 18:04:28,116 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:04:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:04:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1182226010, now seen corresponding path program 107 times [2022-01-31 18:04:28,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:04:28,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465358620] [2022-01-31 18:04:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:04:28,117 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:04:28,117 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:04:28,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:04:28,126 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:04:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:04:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:04:31,953 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:04:31,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465358620] [2022-01-31 18:04:31,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [465358620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:04:31,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:04:31,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [112] imperfect sequences [] total 112 [2022-01-31 18:04:31,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407938355] [2022-01-31 18:04:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:04:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-31 18:04:31,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:04:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-31 18:04:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 18:04:31,955 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 112 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:04:37,138 INFO L93 Difference]: Finished difference Result 244 states and 246 transitions. [2022-01-31 18:04:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 18:04:37,139 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2022-01-31 18:04:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:04:37,139 INFO L225 Difference]: With dead ends: 244 [2022-01-31 18:04:37,139 INFO L226 Difference]: Without dead ends: 235 [2022-01-31 18:04:37,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2022-01-31 18:04:37,142 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 229 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:04:37,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 46 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:04:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-01-31 18:04:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2022-01-31 18:04:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.008695652173913) internal successors, (232), 230 states have internal predecessors, (232), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2022-01-31 18:04:37,241 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 231 [2022-01-31 18:04:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:04:37,241 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2022-01-31 18:04:37,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 111 states have internal predecessors, (227), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2022-01-31 18:04:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-31 18:04:37,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:04:37,241 INFO L514 BasicCegarLoop]: trace histogram [109, 109, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:04:37,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-31 18:04:37,242 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:04:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:04:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1385631268, now seen corresponding path program 108 times [2022-01-31 18:04:37,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:04:37,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999848566] [2022-01-31 18:04:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:04:37,243 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:04:37,243 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:04:37,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:04:37,250 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:04:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:04:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:04:41,207 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:04:41,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999848566] [2022-01-31 18:04:41,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [999848566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:04:41,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:04:41,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2022-01-31 18:04:41,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762368016] [2022-01-31 18:04:41,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:04:41,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 18:04:41,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:04:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 18:04:41,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 18:04:41,210 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand has 113 states, 113 states have (on average 2.0265486725663715) internal successors, (229), 112 states have internal predecessors, (229), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:04:46,460 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2022-01-31 18:04:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-31 18:04:46,461 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0265486725663715) internal successors, (229), 112 states have internal predecessors, (229), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2022-01-31 18:04:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:04:46,461 INFO L225 Difference]: With dead ends: 246 [2022-01-31 18:04:46,461 INFO L226 Difference]: Without dead ends: 237 [2022-01-31 18:04:46,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2022-01-31 18:04:46,464 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 231 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:04:46,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 31 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:04:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-31 18:04:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2022-01-31 18:04:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 232 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2022-01-31 18:04:46,560 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 233 [2022-01-31 18:04:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:04:46,560 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2022-01-31 18:04:46,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.0265486725663715) internal successors, (229), 112 states have internal predecessors, (229), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2022-01-31 18:04:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-31 18:04:46,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:04:46,561 INFO L514 BasicCegarLoop]: trace histogram [110, 110, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:04:46,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-31 18:04:46,561 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:04:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:04:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash -509719774, now seen corresponding path program 109 times [2022-01-31 18:04:46,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:04:46,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628121703] [2022-01-31 18:04:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:04:46,563 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:04:46,563 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:04:46,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:04:46,574 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:04:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:04:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:04:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:04:50,733 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:04:50,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628121703] [2022-01-31 18:04:50,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [628121703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:04:50,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:04:50,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [114] imperfect sequences [] total 114 [2022-01-31 18:04:50,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009683335] [2022-01-31 18:04:50,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:04:50,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-31 18:04:50,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:04:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-31 18:04:50,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 18:04:50,735 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand has 114 states, 114 states have (on average 2.026315789473684) internal successors, (231), 113 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:04:56,072 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2022-01-31 18:04:56,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 18:04:56,072 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.026315789473684) internal successors, (231), 113 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235 [2022-01-31 18:04:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:04:56,073 INFO L225 Difference]: With dead ends: 248 [2022-01-31 18:04:56,073 INFO L226 Difference]: Without dead ends: 239 [2022-01-31 18:04:56,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2022-01-31 18:04:56,075 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 233 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:04:56,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 26 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:04:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-01-31 18:04:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2022-01-31 18:04:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 234 states have (on average 1.0085470085470085) internal successors, (236), 234 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 239 transitions. [2022-01-31 18:04:56,173 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 239 transitions. Word has length 235 [2022-01-31 18:04:56,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:04:56,173 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 239 transitions. [2022-01-31 18:04:56,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.026315789473684) internal successors, (231), 113 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:04:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 239 transitions. [2022-01-31 18:04:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-31 18:04:56,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:04:56,174 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:04:56,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-31 18:04:56,174 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:04:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:04:56,175 INFO L85 PathProgramCache]: Analyzing trace with hash -875937632, now seen corresponding path program 110 times [2022-01-31 18:04:56,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:04:56,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791226427] [2022-01-31 18:04:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:04:56,176 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:04:56,176 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:04:56,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:04:56,188 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:04:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:05:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:05:00,309 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:05:00,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791226427] [2022-01-31 18:05:00,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1791226427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:05:00,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:05:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2022-01-31 18:05:00,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131016803] [2022-01-31 18:05:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:05:00,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 18:05:00,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:05:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 18:05:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 18:05:00,315 INFO L87 Difference]: Start difference. First operand 238 states and 239 transitions. Second operand has 115 states, 115 states have (on average 2.026086956521739) internal successors, (233), 114 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:05:05,716 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2022-01-31 18:05:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-31 18:05:05,716 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.026086956521739) internal successors, (233), 114 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2022-01-31 18:05:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:05:05,718 INFO L225 Difference]: With dead ends: 250 [2022-01-31 18:05:05,718 INFO L226 Difference]: Without dead ends: 241 [2022-01-31 18:05:05,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2022-01-31 18:05:05,720 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 235 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:05:05,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 46 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:05:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-01-31 18:05:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2022-01-31 18:05:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.0084745762711864) internal successors, (238), 236 states have internal predecessors, (238), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2022-01-31 18:05:05,807 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 237 [2022-01-31 18:05:05,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:05:05,807 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2022-01-31 18:05:05,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.026086956521739) internal successors, (233), 114 states have internal predecessors, (233), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:05,807 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2022-01-31 18:05:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-31 18:05:05,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:05:05,808 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:05:05,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-31 18:05:05,808 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:05:05,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:05:05,808 INFO L85 PathProgramCache]: Analyzing trace with hash -623980898, now seen corresponding path program 111 times [2022-01-31 18:05:05,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:05:05,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131245897] [2022-01-31 18:05:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:05:05,809 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:05:05,809 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:05:05,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:05:05,817 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:05:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:09,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:05:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:05:09,909 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:05:09,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131245897] [2022-01-31 18:05:09,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [131245897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:05:09,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:05:09,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [116] imperfect sequences [] total 116 [2022-01-31 18:05:09,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576765333] [2022-01-31 18:05:09,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:05:09,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-01-31 18:05:09,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:05:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-01-31 18:05:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 18:05:09,911 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 116 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:15,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:05:15,371 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2022-01-31 18:05:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 18:05:15,371 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2022-01-31 18:05:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:05:15,372 INFO L225 Difference]: With dead ends: 252 [2022-01-31 18:05:15,372 INFO L226 Difference]: Without dead ends: 243 [2022-01-31 18:05:15,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2022-01-31 18:05:15,374 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 237 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:05:15,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 41 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:05:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-01-31 18:05:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2022-01-31 18:05:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 238 states have internal predecessors, (240), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 243 transitions. [2022-01-31 18:05:15,462 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 243 transitions. Word has length 239 [2022-01-31 18:05:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:05:15,462 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 243 transitions. [2022-01-31 18:05:15,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.0258620689655173) internal successors, (235), 115 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 243 transitions. [2022-01-31 18:05:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-31 18:05:15,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:05:15,463 INFO L514 BasicCegarLoop]: trace histogram [113, 113, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:05:15,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-31 18:05:15,463 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:05:15,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:05:15,463 INFO L85 PathProgramCache]: Analyzing trace with hash 988271900, now seen corresponding path program 112 times [2022-01-31 18:05:15,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:05:15,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819783102] [2022-01-31 18:05:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:05:15,464 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:05:15,464 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:05:15,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:05:15,471 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:05:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:05:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:05:19,602 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:05:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819783102] [2022-01-31 18:05:19,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1819783102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:05:19,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:05:19,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2022-01-31 18:05:19,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783528524] [2022-01-31 18:05:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:05:19,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 18:05:19,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:05:19,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 18:05:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 18:05:19,604 INFO L87 Difference]: Start difference. First operand 242 states and 243 transitions. Second operand has 117 states, 117 states have (on average 2.0256410256410255) internal successors, (237), 116 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:05:25,119 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2022-01-31 18:05:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 18:05:25,120 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0256410256410255) internal successors, (237), 116 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2022-01-31 18:05:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:05:25,120 INFO L225 Difference]: With dead ends: 254 [2022-01-31 18:05:25,120 INFO L226 Difference]: Without dead ends: 245 [2022-01-31 18:05:25,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2022-01-31 18:05:25,122 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 239 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:05:25,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 41 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:05:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-01-31 18:05:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2022-01-31 18:05:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 240 states have internal predecessors, (242), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2022-01-31 18:05:25,211 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 241 [2022-01-31 18:05:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:05:25,211 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2022-01-31 18:05:25,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.0256410256410255) internal successors, (237), 116 states have internal predecessors, (237), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2022-01-31 18:05:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-31 18:05:25,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:05:25,212 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:05:25,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-31 18:05:25,212 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:05:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:05:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash -119983078, now seen corresponding path program 113 times [2022-01-31 18:05:25,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:05:25,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851998955] [2022-01-31 18:05:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:05:25,214 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:05:25,214 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:05:25,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:05:25,222 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:05:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:05:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:05:29,382 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:05:29,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851998955] [2022-01-31 18:05:29,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1851998955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:05:29,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:05:29,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [118] imperfect sequences [] total 118 [2022-01-31 18:05:29,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158263077] [2022-01-31 18:05:29,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:05:29,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 18:05:29,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:05:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 18:05:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 18:05:29,385 INFO L87 Difference]: Start difference. First operand 244 states and 245 transitions. Second operand has 118 states, 118 states have (on average 2.0254237288135593) internal successors, (239), 117 states have internal predecessors, (239), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:35,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:05:35,039 INFO L93 Difference]: Finished difference Result 256 states and 258 transitions. [2022-01-31 18:05:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 18:05:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0254237288135593) internal successors, (239), 117 states have internal predecessors, (239), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 243 [2022-01-31 18:05:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:05:35,040 INFO L225 Difference]: With dead ends: 256 [2022-01-31 18:05:35,040 INFO L226 Difference]: Without dead ends: 247 [2022-01-31 18:05:35,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2022-01-31 18:05:35,042 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 241 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:05:35,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 51 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:05:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-01-31 18:05:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2022-01-31 18:05:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 242 states have internal predecessors, (244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2022-01-31 18:05:35,150 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 243 [2022-01-31 18:05:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:05:35,150 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2022-01-31 18:05:35,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.0254237288135593) internal successors, (239), 117 states have internal predecessors, (239), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2022-01-31 18:05:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-31 18:05:35,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:05:35,151 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:05:35,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-31 18:05:35,151 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:05:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:05:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1127528, now seen corresponding path program 114 times [2022-01-31 18:05:35,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:05:35,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982958402] [2022-01-31 18:05:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:05:35,153 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:05:35,153 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:05:35,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:05:35,161 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:05:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:05:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:05:39,408 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:05:39,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982958402] [2022-01-31 18:05:39,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1982958402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:05:39,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:05:39,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2022-01-31 18:05:39,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319919078] [2022-01-31 18:05:39,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:05:39,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 18:05:39,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:05:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 18:05:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 18:05:39,411 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand has 119 states, 119 states have (on average 2.0252100840336134) internal successors, (241), 118 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:05:45,313 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2022-01-31 18:05:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-31 18:05:45,313 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0252100840336134) internal successors, (241), 118 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2022-01-31 18:05:45,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:05:45,314 INFO L225 Difference]: With dead ends: 258 [2022-01-31 18:05:45,314 INFO L226 Difference]: Without dead ends: 249 [2022-01-31 18:05:45,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2022-01-31 18:05:45,316 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 243 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:05:45,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 31 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:05:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-31 18:05:45,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2022-01-31 18:05:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 244 states have internal predecessors, (246), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2022-01-31 18:05:45,424 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 245 [2022-01-31 18:05:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:05:45,424 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2022-01-31 18:05:45,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.0252100840336134) internal successors, (241), 118 states have internal predecessors, (241), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2022-01-31 18:05:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-31 18:05:45,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:05:45,425 INFO L514 BasicCegarLoop]: trace histogram [116, 116, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:05:45,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-31 18:05:45,425 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:05:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:05:45,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1745060970, now seen corresponding path program 115 times [2022-01-31 18:05:45,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:05:45,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706665638] [2022-01-31 18:05:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:05:45,427 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:05:45,427 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:05:45,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:05:45,436 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:05:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:05:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:05:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:05:49,758 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:05:49,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706665638] [2022-01-31 18:05:49,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1706665638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:05:49,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:05:49,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [120] imperfect sequences [] total 120 [2022-01-31 18:05:49,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127821868] [2022-01-31 18:05:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:05:49,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-01-31 18:05:49,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:05:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-01-31 18:05:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 18:05:49,762 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 120 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:05:55,515 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2022-01-31 18:05:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 18:05:55,515 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 247 [2022-01-31 18:05:55,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:05:55,516 INFO L225 Difference]: With dead ends: 260 [2022-01-31 18:05:55,516 INFO L226 Difference]: Without dead ends: 251 [2022-01-31 18:05:55,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2022-01-31 18:05:55,519 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 245 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:05:55,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 81 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:05:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-31 18:05:55,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2022-01-31 18:05:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 1.008130081300813) internal successors, (248), 246 states have internal predecessors, (248), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2022-01-31 18:05:55,647 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 247 [2022-01-31 18:05:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:05:55,647 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 251 transitions. [2022-01-31 18:05:55,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.025) internal successors, (243), 119 states have internal predecessors, (243), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:05:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 251 transitions. [2022-01-31 18:05:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-31 18:05:55,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:05:55,648 INFO L514 BasicCegarLoop]: trace histogram [117, 117, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:05:55,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-31 18:05:55,648 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:05:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:05:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1667114004, now seen corresponding path program 116 times [2022-01-31 18:05:55,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:05:55,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921384541] [2022-01-31 18:05:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:05:55,650 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:05:55,650 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:05:55,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:05:55,657 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:05:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:06:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:06:00,077 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:06:00,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921384541] [2022-01-31 18:06:00,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1921384541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:06:00,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:06:00,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2022-01-31 18:06:00,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956127542] [2022-01-31 18:06:00,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:06:00,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 18:06:00,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:06:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 18:06:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 18:06:00,079 INFO L87 Difference]: Start difference. First operand 250 states and 251 transitions. Second operand has 121 states, 121 states have (on average 2.024793388429752) internal successors, (245), 120 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:06:06,056 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2022-01-31 18:06:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-31 18:06:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.024793388429752) internal successors, (245), 120 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249 [2022-01-31 18:06:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:06:06,057 INFO L225 Difference]: With dead ends: 262 [2022-01-31 18:06:06,057 INFO L226 Difference]: Without dead ends: 253 [2022-01-31 18:06:06,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2022-01-31 18:06:06,059 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 247 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:06:06,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 41 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:06:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-01-31 18:06:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2022-01-31 18:06:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 1.0080645161290323) internal successors, (250), 248 states have internal predecessors, (250), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2022-01-31 18:06:06,159 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 249 [2022-01-31 18:06:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:06:06,159 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2022-01-31 18:06:06,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.024793388429752) internal successors, (245), 120 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2022-01-31 18:06:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-01-31 18:06:06,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:06:06,160 INFO L514 BasicCegarLoop]: trace histogram [118, 118, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:06:06,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-31 18:06:06,160 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:06:06,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:06:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash -587750126, now seen corresponding path program 117 times [2022-01-31 18:06:06,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:06:06,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593568702] [2022-01-31 18:06:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:06:06,165 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:06:06,165 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:06:06,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:06:06,173 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:06:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:06:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:06:10,692 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:06:10,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593568702] [2022-01-31 18:06:10,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [593568702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:06:10,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:06:10,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [122] imperfect sequences [] total 122 [2022-01-31 18:06:10,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412346486] [2022-01-31 18:06:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:06:10,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-01-31 18:06:10,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:06:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-01-31 18:06:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 18:06:10,695 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand has 122 states, 122 states have (on average 2.0245901639344264) internal successors, (247), 121 states have internal predecessors, (247), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:06:16,702 INFO L93 Difference]: Finished difference Result 264 states and 266 transitions. [2022-01-31 18:06:16,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 18:06:16,702 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.0245901639344264) internal successors, (247), 121 states have internal predecessors, (247), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251 [2022-01-31 18:06:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:06:16,703 INFO L225 Difference]: With dead ends: 264 [2022-01-31 18:06:16,703 INFO L226 Difference]: Without dead ends: 255 [2022-01-31 18:06:16,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2022-01-31 18:06:16,705 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 249 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:06:16,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 41 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:06:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-01-31 18:06:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2022-01-31 18:06:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.008) internal successors, (252), 250 states have internal predecessors, (252), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 255 transitions. [2022-01-31 18:06:16,818 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 255 transitions. Word has length 251 [2022-01-31 18:06:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:06:16,818 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 255 transitions. [2022-01-31 18:06:16,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.0245901639344264) internal successors, (247), 121 states have internal predecessors, (247), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 255 transitions. [2022-01-31 18:06:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-31 18:06:16,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:06:16,819 INFO L514 BasicCegarLoop]: trace histogram [119, 119, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:06:16,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-31 18:06:16,819 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:06:16,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:06:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1446305424, now seen corresponding path program 118 times [2022-01-31 18:06:16,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:06:16,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627676733] [2022-01-31 18:06:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:06:16,821 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:06:16,821 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:06:16,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:06:16,830 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:06:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:06:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:06:21,398 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:06:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627676733] [2022-01-31 18:06:21,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [627676733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:06:21,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:06:21,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [123] imperfect sequences [] total 123 [2022-01-31 18:06:21,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310494855] [2022-01-31 18:06:21,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:06:21,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 18:06:21,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:06:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 18:06:21,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 18:06:21,401 INFO L87 Difference]: Start difference. First operand 254 states and 255 transitions. Second operand has 123 states, 123 states have (on average 2.024390243902439) internal successors, (249), 122 states have internal predecessors, (249), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:27,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:06:27,473 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2022-01-31 18:06:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-31 18:06:27,473 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.024390243902439) internal successors, (249), 122 states have internal predecessors, (249), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2022-01-31 18:06:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:06:27,474 INFO L225 Difference]: With dead ends: 266 [2022-01-31 18:06:27,474 INFO L226 Difference]: Without dead ends: 257 [2022-01-31 18:06:27,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2022-01-31 18:06:27,476 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:06:27,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 46 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:06:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-31 18:06:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2022-01-31 18:06:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.007936507936508) internal successors, (254), 252 states have internal predecessors, (254), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-01-31 18:06:27,607 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 253 [2022-01-31 18:06:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:06:27,607 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-01-31 18:06:27,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.024390243902439) internal successors, (249), 122 states have internal predecessors, (249), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-01-31 18:06:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-31 18:06:27,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:06:27,608 INFO L514 BasicCegarLoop]: trace histogram [120, 120, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:06:27,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-31 18:06:27,608 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:06:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:06:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1963569294, now seen corresponding path program 119 times [2022-01-31 18:06:27,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:06:27,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588279314] [2022-01-31 18:06:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:06:27,609 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:06:27,610 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:06:27,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:06:27,617 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:06:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:06:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:06:32,257 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:06:32,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588279314] [2022-01-31 18:06:32,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1588279314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:06:32,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:06:32,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [124] imperfect sequences [] total 124 [2022-01-31 18:06:32,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26675740] [2022-01-31 18:06:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:06:32,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-01-31 18:06:32,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:06:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-01-31 18:06:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 18:06:32,259 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 124 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:06:38,579 INFO L93 Difference]: Finished difference Result 268 states and 270 transitions. [2022-01-31 18:06:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 18:06:38,580 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 255 [2022-01-31 18:06:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:06:38,580 INFO L225 Difference]: With dead ends: 268 [2022-01-31 18:06:38,580 INFO L226 Difference]: Without dead ends: 259 [2022-01-31 18:06:38,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780 [2022-01-31 18:06:38,583 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 253 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:06:38,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 36 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:06:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-31 18:06:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2022-01-31 18:06:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 254 states have (on average 1.0078740157480315) internal successors, (256), 254 states have internal predecessors, (256), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2022-01-31 18:06:38,684 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 255 [2022-01-31 18:06:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:06:38,684 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2022-01-31 18:06:38,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.024193548387097) internal successors, (251), 123 states have internal predecessors, (251), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2022-01-31 18:06:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-01-31 18:06:38,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:06:38,695 INFO L514 BasicCegarLoop]: trace histogram [121, 121, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:06:38,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-31 18:06:38,695 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:06:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:06:38,695 INFO L85 PathProgramCache]: Analyzing trace with hash 837942028, now seen corresponding path program 120 times [2022-01-31 18:06:38,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:06:38,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409170845] [2022-01-31 18:06:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:06:38,697 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:06:38,697 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:06:38,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:06:38,704 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:06:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:06:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:06:43,381 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:06:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409170845] [2022-01-31 18:06:43,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [409170845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:06:43,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:06:43,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [125] imperfect sequences [] total 125 [2022-01-31 18:06:43,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253568502] [2022-01-31 18:06:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:06:43,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 18:06:43,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:06:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 18:06:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 18:06:43,384 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand has 125 states, 125 states have (on average 2.024) internal successors, (253), 124 states have internal predecessors, (253), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:06:49,653 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2022-01-31 18:06:49,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-31 18:06:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.024) internal successors, (253), 124 states have internal predecessors, (253), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 257 [2022-01-31 18:06:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:06:49,654 INFO L225 Difference]: With dead ends: 270 [2022-01-31 18:06:49,654 INFO L226 Difference]: Without dead ends: 261 [2022-01-31 18:06:49,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762 [2022-01-31 18:06:49,657 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 255 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:06:49,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 66 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:06:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-31 18:06:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2022-01-31 18:06:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 1.0078125) internal successors, (258), 256 states have internal predecessors, (258), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 261 transitions. [2022-01-31 18:06:49,772 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 261 transitions. Word has length 257 [2022-01-31 18:06:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:06:49,773 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 261 transitions. [2022-01-31 18:06:49,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.024) internal successors, (253), 124 states have internal predecessors, (253), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:06:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 261 transitions. [2022-01-31 18:06:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-01-31 18:06:49,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:06:49,773 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:06:49,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-31 18:06:49,773 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:06:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:06:49,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1441897994, now seen corresponding path program 121 times [2022-01-31 18:06:49,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:06:49,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822682062] [2022-01-31 18:06:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:06:49,775 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:06:49,775 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:06:49,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:06:49,785 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:06:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:06:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:06:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:06:54,576 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:06:54,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822682062] [2022-01-31 18:06:54,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [822682062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:06:54,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:06:54,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [126] imperfect sequences [] total 126 [2022-01-31 18:06:54,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058604585] [2022-01-31 18:06:54,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:06:54,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-01-31 18:06:54,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:06:54,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-01-31 18:06:54,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 18:06:54,578 INFO L87 Difference]: Start difference. First operand 260 states and 261 transitions. Second operand has 126 states, 126 states have (on average 2.0238095238095237) internal successors, (255), 125 states have internal predecessors, (255), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:07:00,900 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2022-01-31 18:07:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 18:07:00,900 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.0238095238095237) internal successors, (255), 125 states have internal predecessors, (255), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 259 [2022-01-31 18:07:00,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:07:00,901 INFO L225 Difference]: With dead ends: 272 [2022-01-31 18:07:00,901 INFO L226 Difference]: Without dead ends: 263 [2022-01-31 18:07:00,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752 [2022-01-31 18:07:00,903 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 257 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 18:07:00,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 56 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 18:07:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-01-31 18:07:01,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2022-01-31 18:07:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 258 states have (on average 1.0077519379844961) internal successors, (260), 258 states have internal predecessors, (260), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2022-01-31 18:07:01,020 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 259 [2022-01-31 18:07:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:07:01,020 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2022-01-31 18:07:01,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.0238095238095237) internal successors, (255), 125 states have internal predecessors, (255), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2022-01-31 18:07:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-31 18:07:01,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:07:01,020 INFO L514 BasicCegarLoop]: trace histogram [123, 123, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:07:01,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-31 18:07:01,021 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:07:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:07:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2022996360, now seen corresponding path program 122 times [2022-01-31 18:07:01,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:07:01,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917230146] [2022-01-31 18:07:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:07:01,022 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:07:01,022 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:07:01,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:07:01,030 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:07:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:07:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:07:05,881 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:07:05,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917230146] [2022-01-31 18:07:05,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1917230146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:07:05,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:07:05,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [127] imperfect sequences [] total 127 [2022-01-31 18:07:05,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852435537] [2022-01-31 18:07:05,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:07:05,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 18:07:05,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:07:05,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 18:07:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 18:07:05,885 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand has 127 states, 127 states have (on average 2.0236220472440944) internal successors, (257), 126 states have internal predecessors, (257), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:07:12,397 INFO L93 Difference]: Finished difference Result 274 states and 276 transitions. [2022-01-31 18:07:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-31 18:07:12,398 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0236220472440944) internal successors, (257), 126 states have internal predecessors, (257), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2022-01-31 18:07:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:07:12,398 INFO L225 Difference]: With dead ends: 274 [2022-01-31 18:07:12,398 INFO L226 Difference]: Without dead ends: 265 [2022-01-31 18:07:12,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2022-01-31 18:07:12,401 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 259 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:07:12,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 56 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:07:12,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-01-31 18:07:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2022-01-31 18:07:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 260 states have (on average 1.0076923076923077) internal successors, (262), 260 states have internal predecessors, (262), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2022-01-31 18:07:12,519 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 261 [2022-01-31 18:07:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:07:12,520 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2022-01-31 18:07:12,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.0236220472440944) internal successors, (257), 126 states have internal predecessors, (257), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2022-01-31 18:07:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-31 18:07:12,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:07:12,521 INFO L514 BasicCegarLoop]: trace histogram [124, 124, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:07:12,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-31 18:07:12,521 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:07:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:07:12,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2112777606, now seen corresponding path program 123 times [2022-01-31 18:07:12,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:07:12,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556762789] [2022-01-31 18:07:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:07:12,522 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:07:12,523 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:07:12,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:07:12,531 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:07:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:07:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:07:17,477 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:07:17,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556762789] [2022-01-31 18:07:17,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [556762789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:07:17,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:07:17,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [128] imperfect sequences [] total 128 [2022-01-31 18:07:17,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178622064] [2022-01-31 18:07:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:07:17,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-01-31 18:07:17,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:07:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-01-31 18:07:17,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 18:07:17,481 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 128 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:07:24,113 INFO L93 Difference]: Finished difference Result 276 states and 278 transitions. [2022-01-31 18:07:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 18:07:24,114 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263 [2022-01-31 18:07:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:07:24,114 INFO L225 Difference]: With dead ends: 276 [2022-01-31 18:07:24,114 INFO L226 Difference]: Without dead ends: 267 [2022-01-31 18:07:24,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756 [2022-01-31 18:07:24,117 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 261 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:07:24,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 61 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:07:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-01-31 18:07:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2022-01-31 18:07:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 262 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2022-01-31 18:07:24,224 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 263 [2022-01-31 18:07:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:07:24,224 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2022-01-31 18:07:24,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.0234375) internal successors, (259), 127 states have internal predecessors, (259), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2022-01-31 18:07:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-31 18:07:24,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:07:24,225 INFO L514 BasicCegarLoop]: trace histogram [125, 125, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:07:24,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-31 18:07:24,225 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:07:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:07:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1801758204, now seen corresponding path program 124 times [2022-01-31 18:07:24,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:07:24,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265257911] [2022-01-31 18:07:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:07:24,227 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:07:24,227 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:07:24,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:07:24,236 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:07:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:07:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:07:29,221 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:07:29,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265257911] [2022-01-31 18:07:29,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [265257911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:07:29,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:07:29,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [129] imperfect sequences [] total 129 [2022-01-31 18:07:29,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135359454] [2022-01-31 18:07:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:07:29,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 18:07:29,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:07:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 18:07:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 18:07:29,225 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand has 129 states, 129 states have (on average 2.0232558139534884) internal successors, (261), 128 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:35,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:07:35,891 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2022-01-31 18:07:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-31 18:07:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0232558139534884) internal successors, (261), 128 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265 [2022-01-31 18:07:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:07:35,892 INFO L225 Difference]: With dead ends: 278 [2022-01-31 18:07:35,892 INFO L226 Difference]: Without dead ends: 269 [2022-01-31 18:07:35,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770 [2022-01-31 18:07:35,895 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 263 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:07:35,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 41 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:07:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-31 18:07:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2022-01-31 18:07:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 264 states have internal predecessors, (266), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 269 transitions. [2022-01-31 18:07:36,005 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 269 transitions. Word has length 265 [2022-01-31 18:07:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:07:36,005 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 269 transitions. [2022-01-31 18:07:36,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0232558139534884) internal successors, (261), 128 states have internal predecessors, (261), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 269 transitions. [2022-01-31 18:07:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-01-31 18:07:36,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:07:36,006 INFO L514 BasicCegarLoop]: trace histogram [126, 126, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:07:36,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-31 18:07:36,006 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:07:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:07:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1279320318, now seen corresponding path program 125 times [2022-01-31 18:07:36,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:07:36,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245363653] [2022-01-31 18:07:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:07:36,008 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:07:36,008 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:07:36,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:07:36,017 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:07:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:07:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:07:41,115 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:07:41,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245363653] [2022-01-31 18:07:41,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [245363653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:07:41,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:07:41,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [130] imperfect sequences [] total 130 [2022-01-31 18:07:41,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727577862] [2022-01-31 18:07:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:07:41,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-01-31 18:07:41,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:07:41,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-01-31 18:07:41,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 18:07:41,119 INFO L87 Difference]: Start difference. First operand 268 states and 269 transitions. Second operand has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 129 states have internal predecessors, (263), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:07:47,928 INFO L93 Difference]: Finished difference Result 280 states and 282 transitions. [2022-01-31 18:07:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 18:07:47,929 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 129 states have internal predecessors, (263), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 267 [2022-01-31 18:07:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:07:47,930 INFO L225 Difference]: With dead ends: 280 [2022-01-31 18:07:47,930 INFO L226 Difference]: Without dead ends: 271 [2022-01-31 18:07:47,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792 [2022-01-31 18:07:47,933 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 265 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:07:47,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 51 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:07:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-01-31 18:07:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2022-01-31 18:07:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 266 states have (on average 1.0075187969924813) internal successors, (268), 266 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 271 transitions. [2022-01-31 18:07:48,065 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 271 transitions. Word has length 267 [2022-01-31 18:07:48,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:07:48,065 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 271 transitions. [2022-01-31 18:07:48,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 129 states have internal predecessors, (263), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:07:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 271 transitions. [2022-01-31 18:07:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-31 18:07:48,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:07:48,066 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:07:48,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-31 18:07:48,066 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:07:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:07:48,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1727685504, now seen corresponding path program 126 times [2022-01-31 18:07:48,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:07:48,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806506638] [2022-01-31 18:07:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:07:48,068 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:07:48,068 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:07:48,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:07:48,077 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:07:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:07:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:07:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:07:53,340 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:07:53,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806506638] [2022-01-31 18:07:53,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1806506638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:07:53,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:07:53,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [131] imperfect sequences [] total 131 [2022-01-31 18:07:53,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102580631] [2022-01-31 18:07:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:07:53,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 18:07:53,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:07:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 18:07:53,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 18:07:53,343 INFO L87 Difference]: Start difference. First operand 270 states and 271 transitions. Second operand has 131 states, 131 states have (on average 2.0229007633587788) internal successors, (265), 130 states have internal predecessors, (265), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:08:00,296 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2022-01-31 18:08:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-31 18:08:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.0229007633587788) internal successors, (265), 130 states have internal predecessors, (265), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2022-01-31 18:08:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:08:00,297 INFO L225 Difference]: With dead ends: 282 [2022-01-31 18:08:00,297 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 18:08:00,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2022-01-31 18:08:00,300 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 267 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:08:00,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 41 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:08:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 18:08:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272. [2022-01-31 18:08:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 1.007462686567164) internal successors, (270), 268 states have internal predecessors, (270), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2022-01-31 18:08:00,434 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 269 [2022-01-31 18:08:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:08:00,434 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2022-01-31 18:08:00,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.0229007633587788) internal successors, (265), 130 states have internal predecessors, (265), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2022-01-31 18:08:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-01-31 18:08:00,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:08:00,435 INFO L514 BasicCegarLoop]: trace histogram [128, 128, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:08:00,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-31 18:08:00,435 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:08:00,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:08:00,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1185067646, now seen corresponding path program 127 times [2022-01-31 18:08:00,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:08:00,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675054797] [2022-01-31 18:08:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:08:00,437 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:08:00,437 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:08:00,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:08:00,446 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:08:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:08:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:08:05,734 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:08:05,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675054797] [2022-01-31 18:08:05,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1675054797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:08:05,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:08:05,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [132] imperfect sequences [] total 132 [2022-01-31 18:08:05,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284303944] [2022-01-31 18:08:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:08:05,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-01-31 18:08:05,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:08:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-01-31 18:08:05,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 18:08:05,738 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 132 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:08:12,810 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2022-01-31 18:08:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 18:08:12,811 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 271 [2022-01-31 18:08:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:08:12,811 INFO L225 Difference]: With dead ends: 284 [2022-01-31 18:08:12,812 INFO L226 Difference]: Without dead ends: 275 [2022-01-31 18:08:12,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860 [2022-01-31 18:08:12,815 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 269 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:08:12,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 51 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:08:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-31 18:08:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274. [2022-01-31 18:08:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 270 states have (on average 1.0074074074074073) internal successors, (272), 270 states have internal predecessors, (272), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 275 transitions. [2022-01-31 18:08:12,949 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 275 transitions. Word has length 271 [2022-01-31 18:08:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:08:12,950 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 275 transitions. [2022-01-31 18:08:12,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.022727272727273) internal successors, (267), 131 states have internal predecessors, (267), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 275 transitions. [2022-01-31 18:08:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-31 18:08:12,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:08:12,950 INFO L514 BasicCegarLoop]: trace histogram [129, 129, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:08:12,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-31 18:08:12,951 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:08:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:08:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash 22167804, now seen corresponding path program 128 times [2022-01-31 18:08:12,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:08:12,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130935920] [2022-01-31 18:08:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:08:12,952 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:08:12,952 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:08:12,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:08:12,961 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:08:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:08:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:08:18,320 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:08:18,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130935920] [2022-01-31 18:08:18,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [130935920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:08:18,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:08:18,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [133] imperfect sequences [] total 133 [2022-01-31 18:08:18,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911477537] [2022-01-31 18:08:18,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:08:18,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 18:08:18,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:08:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 18:08:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 18:08:18,323 INFO L87 Difference]: Start difference. First operand 274 states and 275 transitions. Second operand has 133 states, 133 states have (on average 2.0225563909774436) internal successors, (269), 132 states have internal predecessors, (269), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:25,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:08:25,485 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2022-01-31 18:08:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-31 18:08:25,486 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.0225563909774436) internal successors, (269), 132 states have internal predecessors, (269), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 273 [2022-01-31 18:08:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:08:25,486 INFO L225 Difference]: With dead ends: 286 [2022-01-31 18:08:25,486 INFO L226 Difference]: Without dead ends: 277 [2022-01-31 18:08:25,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906 [2022-01-31 18:08:25,489 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 271 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:08:25,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 66 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:08:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-01-31 18:08:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276. [2022-01-31 18:08:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 272 states have internal predecessors, (274), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2022-01-31 18:08:25,606 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 273 [2022-01-31 18:08:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:08:25,607 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2022-01-31 18:08:25,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.0225563909774436) internal successors, (269), 132 states have internal predecessors, (269), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2022-01-31 18:08:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-01-31 18:08:25,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:08:25,607 INFO L514 BasicCegarLoop]: trace histogram [130, 130, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:08:25,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-31 18:08:25,608 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:08:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:08:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash -833083398, now seen corresponding path program 129 times [2022-01-31 18:08:25,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:08:25,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339804338] [2022-01-31 18:08:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:08:25,609 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:08:25,609 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:08:25,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:08:25,618 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:08:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:08:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:08:31,072 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:08:31,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339804338] [2022-01-31 18:08:31,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1339804338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:08:31,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:08:31,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [134] imperfect sequences [] total 134 [2022-01-31 18:08:31,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949055660] [2022-01-31 18:08:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:08:31,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-01-31 18:08:31,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:08:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-01-31 18:08:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 18:08:31,075 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand has 134 states, 134 states have (on average 2.0223880597014925) internal successors, (271), 133 states have internal predecessors, (271), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:08:38,293 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2022-01-31 18:08:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 18:08:38,294 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.0223880597014925) internal successors, (271), 133 states have internal predecessors, (271), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 275 [2022-01-31 18:08:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:08:38,294 INFO L225 Difference]: With dead ends: 288 [2022-01-31 18:08:38,295 INFO L226 Difference]: Without dead ends: 279 [2022-01-31 18:08:38,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960 [2022-01-31 18:08:38,298 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 273 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:08:38,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 41 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:08:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-01-31 18:08:38,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2022-01-31 18:08:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 274 states have internal predecessors, (276), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 279 transitions. [2022-01-31 18:08:38,430 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 279 transitions. Word has length 275 [2022-01-31 18:08:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:08:38,430 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 279 transitions. [2022-01-31 18:08:38,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.0223880597014925) internal successors, (271), 133 states have internal predecessors, (271), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 279 transitions. [2022-01-31 18:08:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-01-31 18:08:38,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:08:38,431 INFO L514 BasicCegarLoop]: trace histogram [131, 131, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:08:38,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-31 18:08:38,431 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:08:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:08:38,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1904232312, now seen corresponding path program 130 times [2022-01-31 18:08:38,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:08:38,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954357815] [2022-01-31 18:08:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:08:38,433 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:08:38,433 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:08:38,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:08:38,443 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:08:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:08:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:08:43,917 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:08:43,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954357815] [2022-01-31 18:08:43,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954357815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:08:43,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:08:43,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [135] imperfect sequences [] total 135 [2022-01-31 18:08:43,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735875634] [2022-01-31 18:08:43,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:08:43,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-01-31 18:08:43,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:08:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-01-31 18:08:43,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 18:08:43,919 INFO L87 Difference]: Start difference. First operand 278 states and 279 transitions. Second operand has 135 states, 135 states have (on average 2.022222222222222) internal successors, (273), 134 states have internal predecessors, (273), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:08:51,147 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2022-01-31 18:08:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-31 18:08:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.022222222222222) internal successors, (273), 134 states have internal predecessors, (273), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2022-01-31 18:08:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:08:51,148 INFO L225 Difference]: With dead ends: 290 [2022-01-31 18:08:51,148 INFO L226 Difference]: Without dead ends: 281 [2022-01-31 18:08:51,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2022-01-31 18:08:51,150 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 275 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:08:51,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 56 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:08:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-01-31 18:08:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2022-01-31 18:08:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 276 states have (on average 1.0072463768115942) internal successors, (278), 276 states have internal predecessors, (278), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2022-01-31 18:08:51,304 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 277 [2022-01-31 18:08:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:08:51,304 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2022-01-31 18:08:51,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.022222222222222) internal successors, (273), 134 states have internal predecessors, (273), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:08:51,304 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2022-01-31 18:08:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-01-31 18:08:51,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:08:51,305 INFO L514 BasicCegarLoop]: trace histogram [132, 132, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:08:51,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-31 18:08:51,305 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:08:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:08:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash -350322826, now seen corresponding path program 131 times [2022-01-31 18:08:51,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:08:51,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724735515] [2022-01-31 18:08:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:08:51,306 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:08:51,306 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:08:51,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:08:51,315 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:08:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:08:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:08:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:08:56,808 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:08:56,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724735515] [2022-01-31 18:08:56,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [724735515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:08:56,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:08:56,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [136] imperfect sequences [] total 136 [2022-01-31 18:08:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966189292] [2022-01-31 18:08:56,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:08:56,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-01-31 18:08:56,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:08:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-01-31 18:08:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 18:08:56,811 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 136 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:09:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:09:04,153 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2022-01-31 18:09:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-31 18:09:04,154 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279 [2022-01-31 18:09:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:09:04,154 INFO L225 Difference]: With dead ends: 292 [2022-01-31 18:09:04,154 INFO L226 Difference]: Without dead ends: 283 [2022-01-31 18:09:04,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092 [2022-01-31 18:09:04,157 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 277 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:09:04,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 41 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:09:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-31 18:09:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2022-01-31 18:09:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 278 states have (on average 1.0071942446043165) internal successors, (280), 278 states have internal predecessors, (280), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:09:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 283 transitions. [2022-01-31 18:09:04,291 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 283 transitions. Word has length 279 [2022-01-31 18:09:04,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:09:04,291 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 283 transitions. [2022-01-31 18:09:04,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.0220588235294117) internal successors, (275), 135 states have internal predecessors, (275), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:09:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 283 transitions. [2022-01-31 18:09:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-01-31 18:09:04,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:09:04,292 INFO L514 BasicCegarLoop]: trace histogram [133, 133, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:09:04,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-31 18:09:04,292 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:09:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:09:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1980674036, now seen corresponding path program 132 times [2022-01-31 18:09:04,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:09:04,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224447998] [2022-01-31 18:09:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:09:04,293 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:09:04,293 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:09:04,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:09:04,302 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:09:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:09:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:09:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:09:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:09:09,960 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:09:09,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224447998] [2022-01-31 18:09:09,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224447998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:09:09,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:09:09,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [137] imperfect sequences [] total 137 [2022-01-31 18:09:09,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576055872] [2022-01-31 18:09:09,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:09:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-01-31 18:09:09,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:09:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-01-31 18:09:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 18:09:09,963 INFO L87 Difference]: Start difference. First operand 282 states and 283 transitions. Second operand has 137 states, 137 states have (on average 2.021897810218978) internal successors, (277), 136 states have internal predecessors, (277), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:09:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 18:09:17,432 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2022-01-31 18:09:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-31 18:09:17,432 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.021897810218978) internal successors, (277), 136 states have internal predecessors, (277), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 281 [2022-01-31 18:09:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 18:09:17,433 INFO L225 Difference]: With dead ends: 294 [2022-01-31 18:09:17,433 INFO L226 Difference]: Without dead ends: 285 [2022-01-31 18:09:17,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170 [2022-01-31 18:09:17,436 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 279 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 18:09:17,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 36 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 18:09:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-31 18:09:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2022-01-31 18:09:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 280 states have internal predecessors, (282), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:09:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 285 transitions. [2022-01-31 18:09:17,561 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 285 transitions. Word has length 281 [2022-01-31 18:09:17,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 18:09:17,562 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 285 transitions. [2022-01-31 18:09:17,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.021897810218978) internal successors, (277), 136 states have internal predecessors, (277), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 18:09:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 285 transitions. [2022-01-31 18:09:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-01-31 18:09:17,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:09:17,562 INFO L514 BasicCegarLoop]: trace histogram [134, 134, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:09:17,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-31 18:09:17,562 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:09:17,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:09:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash 95729906, now seen corresponding path program 133 times [2022-01-31 18:09:17,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:09:17,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657173818] [2022-01-31 18:09:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:09:17,564 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 18:09:17,564 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 18:09:17,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:09:17,586 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:09:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:09:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:09:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:09:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 18:09:23,298 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:09:23,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657173818] [2022-01-31 18:09:23,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1657173818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:09:23,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:09:23,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [138] imperfect sequences [] total 138 [2022-01-31 18:09:23,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705903724] [2022-01-31 18:09:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:09:23,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-01-31 18:09:23,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:09:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-01-31 18:09:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 18:09:23,302 INFO L87 Difference]: Start difference. First operand 284 states and 285 transitions. Second operand has 138 states, 138 states have (on average 2.0217391304347827) internal successors, (279), 137 states have internal predecessors, (279), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)