/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:38:12,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:38:12,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:38:12,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 03:38:12,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:38:12,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:38:12,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:38:12,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:38:12,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:38:12,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:38:12,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:38:12,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:38:12,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:38:12,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:38:12,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:38:12,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:38:12,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 03:38:12,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:38:12,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:38:12,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:38:12,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:38:12,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:38:12,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:38:12,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:38:12,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:38:12,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:38:12,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:38:12,215 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:38:12,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:38:12,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:38:12,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:38:12,217 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:38:12,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:38:12,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:38:12,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:38:12,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:38:12,217 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:38:12,217 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:38:12,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:38:12,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:38:12,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:38:12,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:38:12,387 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:38:12,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2022-01-11 03:38:12,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bfd9ad1b/dc1671556ad34088b793ea88afa80bff/FLAGa26fbba01 [2022-01-11 03:38:12,895 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:38:12,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2022-01-11 03:38:12,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bfd9ad1b/dc1671556ad34088b793ea88afa80bff/FLAGa26fbba01 [2022-01-11 03:38:12,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bfd9ad1b/dc1671556ad34088b793ea88afa80bff [2022-01-11 03:38:12,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:38:12,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:38:12,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:38:12,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:38:12,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:38:12,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:38:12" (1/1) ... [2022-01-11 03:38:12,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6176e82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:12, skipping insertion in model container [2022-01-11 03:38:12,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:38:12" (1/1) ... [2022-01-11 03:38:12,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:38:13,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:38:13,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label22.c[56764,56777] [2022-01-11 03:38:13,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:38:13,398 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:38:13,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label22.c[56764,56777] [2022-01-11 03:38:13,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:38:13,567 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:38:13,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13 WrapperNode [2022-01-11 03:38:13,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:38:13,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:38:13,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:38:13,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:38:13,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,659 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-11 03:38:13,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:38:13,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:38:13,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:38:13,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:38:13,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:38:13,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:38:13,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:38:13,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:38:13,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (1/1) ... [2022-01-11 03:38:13,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:38:13,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:38:13,834 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) [2022-01-11 03:38:13,863 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 [2022-01-11 03:38:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:38:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:38:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:38:13,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:38:13,982 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:38:13,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:38:15,338 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:38:15,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:38:15,345 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 03:38:15,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:38:15 BoogieIcfgContainer [2022-01-11 03:38:15,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:38:15,347 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:38:15,347 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:38:15,348 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:38:15,350 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:38:15" (1/1) ... [2022-01-11 03:38:15,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:38:15 BasicIcfg [2022-01-11 03:38:15,754 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:38:15,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:38:15,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:38:15,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:38:15,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:38:12" (1/4) ... [2022-01-11 03:38:15,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b7a89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:38:15, skipping insertion in model container [2022-01-11 03:38:15,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:38:13" (2/4) ... [2022-01-11 03:38:15,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b7a89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:38:15, skipping insertion in model container [2022-01-11 03:38:15,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:38:15" (3/4) ... [2022-01-11 03:38:15,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b7a89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:38:15, skipping insertion in model container [2022-01-11 03:38:15,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:38:15" (4/4) ... [2022-01-11 03:38:15,760 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label22.cTransformedIcfg [2022-01-11 03:38:15,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:38:15,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:38:15,808 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:38:15,812 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=FAST_UPR [2022-01-11 03:38:15,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:38:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-11 03:38:15,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:15,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:15,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1382485136, now seen corresponding path program 1 times [2022-01-11 03:38:15,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:15,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705628712] [2022-01-11 03:38:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:15,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:38:16,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:16,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705628712] [2022-01-11 03:38:16,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705628712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:16,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:16,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:16,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123292513] [2022-01-11 03:38:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:16,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:16,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:16,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:16,490 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:17,661 INFO L93 Difference]: Finished difference Result 816 states and 1453 transitions. [2022-01-11 03:38:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:17,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2022-01-11 03:38:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:17,674 INFO L225 Difference]: With dead ends: 816 [2022-01-11 03:38:17,674 INFO L226 Difference]: Without dead ends: 450 [2022-01-11 03:38:17,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:17,679 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 143 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:17,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 130 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:38:17,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-11 03:38:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 448. [2022-01-11 03:38:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.621923937360179) internal successors, (725), 447 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 725 transitions. [2022-01-11 03:38:17,730 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 725 transitions. Word has length 167 [2022-01-11 03:38:17,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:17,730 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 725 transitions. [2022-01-11 03:38:17,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 725 transitions. [2022-01-11 03:38:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-11 03:38:17,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:17,733 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:17,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:38:17,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:17,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1790473766, now seen corresponding path program 1 times [2022-01-11 03:38:17,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:17,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444864474] [2022-01-11 03:38:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:17,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:38:17,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:17,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444864474] [2022-01-11 03:38:17,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444864474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:17,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:17,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:17,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618170569] [2022-01-11 03:38:17,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:17,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:17,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:17,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:17,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:17,853 INFO L87 Difference]: Start difference. First operand 448 states and 725 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:18,205 INFO L93 Difference]: Finished difference Result 1327 states and 2154 transitions. [2022-01-11 03:38:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:18,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-01-11 03:38:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:18,209 INFO L225 Difference]: With dead ends: 1327 [2022-01-11 03:38:18,209 INFO L226 Difference]: Without dead ends: 881 [2022-01-11 03:38:18,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:18,211 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 360 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:18,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 555 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 03:38:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-01-11 03:38:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2022-01-11 03:38:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.6207289293849658) internal successors, (1423), 878 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1423 transitions. [2022-01-11 03:38:18,233 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1423 transitions. Word has length 172 [2022-01-11 03:38:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:18,233 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1423 transitions. [2022-01-11 03:38:18,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:18,233 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1423 transitions. [2022-01-11 03:38:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 03:38:18,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:18,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:18,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:38:18,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash -325325524, now seen corresponding path program 1 times [2022-01-11 03:38:18,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383655328] [2022-01-11 03:38:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:18,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:38:18,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383655328] [2022-01-11 03:38:18,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383655328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:18,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:18,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:18,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93801730] [2022-01-11 03:38:18,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:18,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:18,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:18,335 INFO L87 Difference]: Start difference. First operand 879 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:19,240 INFO L93 Difference]: Finished difference Result 2601 states and 4231 transitions. [2022-01-11 03:38:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 03:38:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:19,246 INFO L225 Difference]: With dead ends: 2601 [2022-01-11 03:38:19,246 INFO L226 Difference]: Without dead ends: 1724 [2022-01-11 03:38:19,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:19,248 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:19,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 97 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:38:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-01-11 03:38:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1699. [2022-01-11 03:38:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.5871613663133097) internal successors, (2695), 1698 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2695 transitions. [2022-01-11 03:38:19,273 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2695 transitions. Word has length 175 [2022-01-11 03:38:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:19,274 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 2695 transitions. [2022-01-11 03:38:19,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:19,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2695 transitions. [2022-01-11 03:38:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 03:38:19,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:19,278 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:19,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 03:38:19,278 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:19,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1813697352, now seen corresponding path program 1 times [2022-01-11 03:38:19,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:19,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877586023] [2022-01-11 03:38:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:19,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 03:38:19,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:19,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877586023] [2022-01-11 03:38:19,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877586023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:19,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:19,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:19,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865868583] [2022-01-11 03:38:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:19,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:19,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:19,355 INFO L87 Difference]: Start difference. First operand 1699 states and 2695 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:19,836 INFO L93 Difference]: Finished difference Result 3356 states and 5334 transitions. [2022-01-11 03:38:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-01-11 03:38:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:19,840 INFO L225 Difference]: With dead ends: 3356 [2022-01-11 03:38:19,841 INFO L226 Difference]: Without dead ends: 1659 [2022-01-11 03:38:19,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:19,849 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:19,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 03:38:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-01-11 03:38:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1659. [2022-01-11 03:38:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1658 states have (on average 1.551869722557298) internal successors, (2573), 1658 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2573 transitions. [2022-01-11 03:38:19,878 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2573 transitions. Word has length 185 [2022-01-11 03:38:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:19,878 INFO L470 AbstractCegarLoop]: Abstraction has 1659 states and 2573 transitions. [2022-01-11 03:38:19,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2573 transitions. [2022-01-11 03:38:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-11 03:38:19,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:19,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:19,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 03:38:19,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1869479062, now seen corresponding path program 1 times [2022-01-11 03:38:19,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:19,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192413184] [2022-01-11 03:38:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:19,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:38:20,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:20,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192413184] [2022-01-11 03:38:20,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192413184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:20,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:20,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:20,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684273172] [2022-01-11 03:38:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:20,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:38:20,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:20,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:38:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:20,023 INFO L87 Difference]: Start difference. First operand 1659 states and 2573 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:21,158 INFO L93 Difference]: Finished difference Result 5796 states and 9031 transitions. [2022-01-11 03:38:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:38:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2022-01-11 03:38:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:21,171 INFO L225 Difference]: With dead ends: 5796 [2022-01-11 03:38:21,172 INFO L226 Difference]: Without dead ends: 4139 [2022-01-11 03:38:21,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:21,179 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 489 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:21,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 487 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:38:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2022-01-11 03:38:21,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4125. [2022-01-11 03:38:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 1.5329776915615907) internal successors, (6322), 4124 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 6322 transitions. [2022-01-11 03:38:21,251 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 6322 transitions. Word has length 205 [2022-01-11 03:38:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:21,252 INFO L470 AbstractCegarLoop]: Abstraction has 4125 states and 6322 transitions. [2022-01-11 03:38:21,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 6322 transitions. [2022-01-11 03:38:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-11 03:38:21,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:21,262 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:21,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 03:38:21,262 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:21,263 INFO L85 PathProgramCache]: Analyzing trace with hash 88938615, now seen corresponding path program 1 times [2022-01-11 03:38:21,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:21,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449211677] [2022-01-11 03:38:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:21,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:38:21,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:21,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449211677] [2022-01-11 03:38:21,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449211677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:21,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:21,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:21,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889488886] [2022-01-11 03:38:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:21,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:21,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:21,422 INFO L87 Difference]: Start difference. First operand 4125 states and 6322 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:22,261 INFO L93 Difference]: Finished difference Result 12326 states and 18897 transitions. [2022-01-11 03:38:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-01-11 03:38:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:22,288 INFO L225 Difference]: With dead ends: 12326 [2022-01-11 03:38:22,288 INFO L226 Difference]: Without dead ends: 8203 [2022-01-11 03:38:22,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:22,296 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 197 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:22,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 93 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8203 states. [2022-01-11 03:38:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8203 to 8198. [2022-01-11 03:38:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8198 states, 8197 states have (on average 1.452604611443211) internal successors, (11907), 8197 states have internal predecessors, (11907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8198 states to 8198 states and 11907 transitions. [2022-01-11 03:38:22,449 INFO L78 Accepts]: Start accepts. Automaton has 8198 states and 11907 transitions. Word has length 217 [2022-01-11 03:38:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:22,450 INFO L470 AbstractCegarLoop]: Abstraction has 8198 states and 11907 transitions. [2022-01-11 03:38:22,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 8198 states and 11907 transitions. [2022-01-11 03:38:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-01-11 03:38:22,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:22,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:22,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 03:38:22,457 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:22,457 INFO L85 PathProgramCache]: Analyzing trace with hash 363738948, now seen corresponding path program 1 times [2022-01-11 03:38:22,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:22,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063846112] [2022-01-11 03:38:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:22,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:38:22,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063846112] [2022-01-11 03:38:22,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063846112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:22,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:22,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:22,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537816338] [2022-01-11 03:38:22,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:22,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:22,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:22,607 INFO L87 Difference]: Start difference. First operand 8198 states and 11907 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:23,480 INFO L93 Difference]: Finished difference Result 23504 states and 34150 transitions. [2022-01-11 03:38:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:23,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2022-01-11 03:38:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:23,524 INFO L225 Difference]: With dead ends: 23504 [2022-01-11 03:38:23,524 INFO L226 Difference]: Without dead ends: 15308 [2022-01-11 03:38:23,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:23,535 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 190 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:23,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 101 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15308 states. [2022-01-11 03:38:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15308 to 15304. [2022-01-11 03:38:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15304 states, 15303 states have (on average 1.3978958374175) internal successors, (21392), 15303 states have internal predecessors, (21392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15304 states to 15304 states and 21392 transitions. [2022-01-11 03:38:23,740 INFO L78 Accepts]: Start accepts. Automaton has 15304 states and 21392 transitions. Word has length 227 [2022-01-11 03:38:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:23,740 INFO L470 AbstractCegarLoop]: Abstraction has 15304 states and 21392 transitions. [2022-01-11 03:38:23,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 15304 states and 21392 transitions. [2022-01-11 03:38:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-11 03:38:23,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:23,753 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:23,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 03:38:23,753 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash 315553840, now seen corresponding path program 1 times [2022-01-11 03:38:23,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793872808] [2022-01-11 03:38:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:23,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:38:23,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793872808] [2022-01-11 03:38:23,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793872808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:23,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:23,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:23,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557592158] [2022-01-11 03:38:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:23,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:23,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:23,905 INFO L87 Difference]: Start difference. First operand 15304 states and 21392 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:24,794 INFO L93 Difference]: Finished difference Result 30612 states and 42793 transitions. [2022-01-11 03:38:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2022-01-11 03:38:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:24,816 INFO L225 Difference]: With dead ends: 30612 [2022-01-11 03:38:24,817 INFO L226 Difference]: Without dead ends: 15310 [2022-01-11 03:38:24,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:24,834 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 158 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:24,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 375 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15310 states. [2022-01-11 03:38:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15310 to 15304. [2022-01-11 03:38:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15304 states, 15303 states have (on average 1.2496242566816964) internal successors, (19123), 15303 states have internal predecessors, (19123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15304 states to 15304 states and 19123 transitions. [2022-01-11 03:38:25,044 INFO L78 Accepts]: Start accepts. Automaton has 15304 states and 19123 transitions. Word has length 243 [2022-01-11 03:38:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:25,045 INFO L470 AbstractCegarLoop]: Abstraction has 15304 states and 19123 transitions. [2022-01-11 03:38:25,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 15304 states and 19123 transitions. [2022-01-11 03:38:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-01-11 03:38:25,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:25,056 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:25,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 03:38:25,057 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:25,057 INFO L85 PathProgramCache]: Analyzing trace with hash 277489398, now seen corresponding path program 1 times [2022-01-11 03:38:25,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:25,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461854776] [2022-01-11 03:38:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:25,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-11 03:38:25,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:25,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461854776] [2022-01-11 03:38:25,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461854776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:25,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:25,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:25,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100280298] [2022-01-11 03:38:25,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:25,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:25,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:25,155 INFO L87 Difference]: Start difference. First operand 15304 states and 19123 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:26,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:26,033 INFO L93 Difference]: Finished difference Result 36321 states and 45066 transitions. [2022-01-11 03:38:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:26,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2022-01-11 03:38:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:26,064 INFO L225 Difference]: With dead ends: 36321 [2022-01-11 03:38:26,064 INFO L226 Difference]: Without dead ends: 21019 [2022-01-11 03:38:26,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:26,083 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 227 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:26,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 103 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21019 states. [2022-01-11 03:38:26,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21019 to 21015. [2022-01-11 03:38:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21015 states, 21014 states have (on average 1.225135623869801) internal successors, (25745), 21014 states have internal predecessors, (25745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21015 states to 21015 states and 25745 transitions. [2022-01-11 03:38:26,396 INFO L78 Accepts]: Start accepts. Automaton has 21015 states and 25745 transitions. Word has length 251 [2022-01-11 03:38:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:26,396 INFO L470 AbstractCegarLoop]: Abstraction has 21015 states and 25745 transitions. [2022-01-11 03:38:26,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21015 states and 25745 transitions. [2022-01-11 03:38:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-11 03:38:26,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:26,411 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:26,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 03:38:26,411 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash 806325708, now seen corresponding path program 1 times [2022-01-11 03:38:26,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:26,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904521527] [2022-01-11 03:38:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:26,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:38:26,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:26,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904521527] [2022-01-11 03:38:26,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904521527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:26,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:26,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:26,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132577758] [2022-01-11 03:38:26,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:26,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:26,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:26,635 INFO L87 Difference]: Start difference. First operand 21015 states and 25745 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:27,629 INFO L93 Difference]: Finished difference Result 56678 states and 69372 transitions. [2022-01-11 03:38:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:27,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2022-01-11 03:38:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:27,675 INFO L225 Difference]: With dead ends: 56678 [2022-01-11 03:38:27,676 INFO L226 Difference]: Without dead ends: 35665 [2022-01-11 03:38:27,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:27,702 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 159 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:27,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 357 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35665 states. [2022-01-11 03:38:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35665 to 35655. [2022-01-11 03:38:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35655 states, 35654 states have (on average 1.1977337746115442) internal successors, (42704), 35654 states have internal predecessors, (42704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:28,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35655 states to 35655 states and 42704 transitions. [2022-01-11 03:38:28,225 INFO L78 Accepts]: Start accepts. Automaton has 35655 states and 42704 transitions. Word has length 256 [2022-01-11 03:38:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:28,225 INFO L470 AbstractCegarLoop]: Abstraction has 35655 states and 42704 transitions. [2022-01-11 03:38:28,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 35655 states and 42704 transitions. [2022-01-11 03:38:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-11 03:38:28,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:28,354 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:28,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 03:38:28,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash -279030903, now seen corresponding path program 1 times [2022-01-11 03:38:28,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:28,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594193333] [2022-01-11 03:38:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:28,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-11 03:38:28,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594193333] [2022-01-11 03:38:28,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594193333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:28,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:28,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:28,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617385715] [2022-01-11 03:38:28,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:28,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:28,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:28,488 INFO L87 Difference]: Start difference. First operand 35655 states and 42704 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:29,580 INFO L93 Difference]: Finished difference Result 81906 states and 97786 transitions. [2022-01-11 03:38:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:29,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2022-01-11 03:38:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:29,635 INFO L225 Difference]: With dead ends: 81906 [2022-01-11 03:38:29,635 INFO L226 Difference]: Without dead ends: 46253 [2022-01-11 03:38:29,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:29,649 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 205 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:29,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 112 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:38:29,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46253 states. [2022-01-11 03:38:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46253 to 46251. [2022-01-11 03:38:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46251 states, 46250 states have (on average 1.189772972972973) internal successors, (55027), 46250 states have internal predecessors, (55027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46251 states to 46251 states and 55027 transitions. [2022-01-11 03:38:30,234 INFO L78 Accepts]: Start accepts. Automaton has 46251 states and 55027 transitions. Word has length 269 [2022-01-11 03:38:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:30,234 INFO L470 AbstractCegarLoop]: Abstraction has 46251 states and 55027 transitions. [2022-01-11 03:38:30,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 46251 states and 55027 transitions. [2022-01-11 03:38:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-11 03:38:30,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:30,266 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:30,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 03:38:30,266 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash 754561569, now seen corresponding path program 1 times [2022-01-11 03:38:30,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:30,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874534760] [2022-01-11 03:38:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:30,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-11 03:38:30,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:30,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874534760] [2022-01-11 03:38:30,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874534760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:30,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:30,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:30,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269103727] [2022-01-11 03:38:30,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:30,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:38:30,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:30,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:38:30,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:30,405 INFO L87 Difference]: Start difference. First operand 46251 states and 55027 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:31,820 INFO L93 Difference]: Finished difference Result 98801 states and 117057 transitions. [2022-01-11 03:38:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:38:31,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2022-01-11 03:38:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:31,880 INFO L225 Difference]: With dead ends: 98801 [2022-01-11 03:38:31,880 INFO L226 Difference]: Without dead ends: 52552 [2022-01-11 03:38:31,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:31,894 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 763 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:31,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 311 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:38:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52552 states. [2022-01-11 03:38:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52552 to 52544. [2022-01-11 03:38:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52544 states, 52543 states have (on average 1.1795101155244276) internal successors, (61975), 52543 states have internal predecessors, (61975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52544 states to 52544 states and 61975 transitions. [2022-01-11 03:38:32,569 INFO L78 Accepts]: Start accepts. Automaton has 52544 states and 61975 transitions. Word has length 276 [2022-01-11 03:38:32,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:32,569 INFO L470 AbstractCegarLoop]: Abstraction has 52544 states and 61975 transitions. [2022-01-11 03:38:32,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 52544 states and 61975 transitions. [2022-01-11 03:38:32,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-11 03:38:32,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:32,599 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:32,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 03:38:32,600 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 764075758, now seen corresponding path program 1 times [2022-01-11 03:38:32,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951050516] [2022-01-11 03:38:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:32,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:38:32,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:32,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951050516] [2022-01-11 03:38:32,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951050516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:32,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:32,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:32,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875357279] [2022-01-11 03:38:32,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:32,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:32,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:32,927 INFO L87 Difference]: Start difference. First operand 52544 states and 61975 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:34,099 INFO L93 Difference]: Finished difference Result 135737 states and 159418 transitions. [2022-01-11 03:38:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2022-01-11 03:38:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:34,188 INFO L225 Difference]: With dead ends: 135737 [2022-01-11 03:38:34,188 INFO L226 Difference]: Without dead ends: 83195 [2022-01-11 03:38:34,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:34,216 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 94 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:34,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 141 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83195 states. [2022-01-11 03:38:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83195 to 71011. [2022-01-11 03:38:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71011 states, 71010 states have (on average 1.1438388959301506) internal successors, (81224), 71010 states have internal predecessors, (81224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71011 states to 71011 states and 81224 transitions. [2022-01-11 03:38:35,182 INFO L78 Accepts]: Start accepts. Automaton has 71011 states and 81224 transitions. Word has length 300 [2022-01-11 03:38:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:35,182 INFO L470 AbstractCegarLoop]: Abstraction has 71011 states and 81224 transitions. [2022-01-11 03:38:35,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 71011 states and 81224 transitions. [2022-01-11 03:38:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-11 03:38:35,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:35,210 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:35,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 03:38:35,210 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1495378076, now seen corresponding path program 1 times [2022-01-11 03:38:35,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:35,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642486333] [2022-01-11 03:38:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:35,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-11 03:38:35,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642486333] [2022-01-11 03:38:35,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642486333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:35,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:35,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:35,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118525002] [2022-01-11 03:38:35,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:35,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:35,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:35,535 INFO L87 Difference]: Start difference. First operand 71011 states and 81224 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:36,763 INFO L93 Difference]: Finished difference Result 124317 states and 141992 transitions. [2022-01-11 03:38:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:36,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-01-11 03:38:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:36,835 INFO L225 Difference]: With dead ends: 124317 [2022-01-11 03:38:36,836 INFO L226 Difference]: Without dead ends: 53308 [2022-01-11 03:38:36,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:36,874 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 167 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:36,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 327 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53308 states. [2022-01-11 03:38:37,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53308 to 46177. [2022-01-11 03:38:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46177 states, 46176 states have (on average 1.1284650034650034) internal successors, (52108), 46176 states have internal predecessors, (52108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46177 states to 46177 states and 52108 transitions. [2022-01-11 03:38:37,608 INFO L78 Accepts]: Start accepts. Automaton has 46177 states and 52108 transitions. Word has length 310 [2022-01-11 03:38:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:37,608 INFO L470 AbstractCegarLoop]: Abstraction has 46177 states and 52108 transitions. [2022-01-11 03:38:37,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 46177 states and 52108 transitions. [2022-01-11 03:38:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-11 03:38:37,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:37,637 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:37,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 03:38:37,638 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1375209946, now seen corresponding path program 1 times [2022-01-11 03:38:37,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:37,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158413428] [2022-01-11 03:38:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:37,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-11 03:38:37,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158413428] [2022-01-11 03:38:37,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158413428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:37,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:37,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:37,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026358759] [2022-01-11 03:38:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:37,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:38:37,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:38:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:37,819 INFO L87 Difference]: Start difference. First operand 46177 states and 52108 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:39,275 INFO L93 Difference]: Finished difference Result 93597 states and 105698 transitions. [2022-01-11 03:38:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:38:39,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2022-01-11 03:38:39,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:39,332 INFO L225 Difference]: With dead ends: 93597 [2022-01-11 03:38:39,332 INFO L226 Difference]: Without dead ends: 47422 [2022-01-11 03:38:39,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:39,363 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 357 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:39,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 98 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 03:38:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47422 states. [2022-01-11 03:38:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47422 to 44147. [2022-01-11 03:38:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44147 states, 44146 states have (on average 1.13138223168577) internal successors, (49946), 44146 states have internal predecessors, (49946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44147 states to 44147 states and 49946 transitions. [2022-01-11 03:38:40,077 INFO L78 Accepts]: Start accepts. Automaton has 44147 states and 49946 transitions. Word has length 326 [2022-01-11 03:38:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:40,078 INFO L470 AbstractCegarLoop]: Abstraction has 44147 states and 49946 transitions. [2022-01-11 03:38:40,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 44147 states and 49946 transitions. [2022-01-11 03:38:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-01-11 03:38:40,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:40,110 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:40,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 03:38:40,110 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1127004048, now seen corresponding path program 1 times [2022-01-11 03:38:40,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:40,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320105698] [2022-01-11 03:38:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:40,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-11 03:38:40,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:40,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320105698] [2022-01-11 03:38:40,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320105698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:40,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:40,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:40,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661666862] [2022-01-11 03:38:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:40,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:40,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:40,331 INFO L87 Difference]: Start difference. First operand 44147 states and 49946 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:41,004 INFO L93 Difference]: Finished difference Result 121016 states and 137257 transitions. [2022-01-11 03:38:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 369 [2022-01-11 03:38:41,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:41,092 INFO L225 Difference]: With dead ends: 121016 [2022-01-11 03:38:41,093 INFO L226 Difference]: Without dead ends: 76871 [2022-01-11 03:38:41,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:41,120 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 240 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:41,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 812 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 03:38:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76871 states. [2022-01-11 03:38:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76871 to 70984. [2022-01-11 03:38:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70984 states, 70983 states have (on average 1.1282560613104546) internal successors, (80087), 70983 states have internal predecessors, (80087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70984 states to 70984 states and 80087 transitions. [2022-01-11 03:38:42,259 INFO L78 Accepts]: Start accepts. Automaton has 70984 states and 80087 transitions. Word has length 369 [2022-01-11 03:38:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:42,259 INFO L470 AbstractCegarLoop]: Abstraction has 70984 states and 80087 transitions. [2022-01-11 03:38:42,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 70984 states and 80087 transitions. [2022-01-11 03:38:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-01-11 03:38:42,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:42,298 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:42,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 03:38:42,298 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:42,299 INFO L85 PathProgramCache]: Analyzing trace with hash -110023802, now seen corresponding path program 1 times [2022-01-11 03:38:42,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:42,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345962448] [2022-01-11 03:38:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:42,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-01-11 03:38:42,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:42,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345962448] [2022-01-11 03:38:42,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345962448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:42,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:42,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:42,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299540795] [2022-01-11 03:38:42,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:42,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:42,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:42,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:42,459 INFO L87 Difference]: Start difference. First operand 70984 states and 80087 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:43,564 INFO L93 Difference]: Finished difference Result 155417 states and 176026 transitions. [2022-01-11 03:38:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:43,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2022-01-11 03:38:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:43,665 INFO L225 Difference]: With dead ends: 155417 [2022-01-11 03:38:43,666 INFO L226 Difference]: Without dead ends: 84435 [2022-01-11 03:38:43,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:43,716 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 154 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:43,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 117 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:38:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84435 states. [2022-01-11 03:38:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84435 to 81345. [2022-01-11 03:38:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81345 states, 81344 states have (on average 1.1358674272226594) internal successors, (92396), 81344 states have internal predecessors, (92396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81345 states to 81345 states and 92396 transitions. [2022-01-11 03:38:45,105 INFO L78 Accepts]: Start accepts. Automaton has 81345 states and 92396 transitions. Word has length 376 [2022-01-11 03:38:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:45,105 INFO L470 AbstractCegarLoop]: Abstraction has 81345 states and 92396 transitions. [2022-01-11 03:38:45,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 81345 states and 92396 transitions. [2022-01-11 03:38:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-01-11 03:38:45,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:45,165 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:45,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 03:38:45,165 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash 536303306, now seen corresponding path program 1 times [2022-01-11 03:38:45,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:45,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217526217] [2022-01-11 03:38:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:45,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-11 03:38:45,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:45,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217526217] [2022-01-11 03:38:45,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217526217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:45,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:45,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:45,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327019895] [2022-01-11 03:38:45,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:45,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:38:45,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:45,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:38:45,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:45,390 INFO L87 Difference]: Start difference. First operand 81345 states and 92396 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:47,136 INFO L93 Difference]: Finished difference Result 201095 states and 227137 transitions. [2022-01-11 03:38:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:38:47,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2022-01-11 03:38:47,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:47,290 INFO L225 Difference]: With dead ends: 201095 [2022-01-11 03:38:47,290 INFO L226 Difference]: Without dead ends: 119752 [2022-01-11 03:38:47,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:47,316 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 353 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:47,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 433 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:38:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119752 states. [2022-01-11 03:38:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119752 to 116900. [2022-01-11 03:38:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116900 states, 116899 states have (on average 1.112652802846902) internal successors, (130068), 116899 states have internal predecessors, (130068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116900 states to 116900 states and 130068 transitions. [2022-01-11 03:38:48,955 INFO L78 Accepts]: Start accepts. Automaton has 116900 states and 130068 transitions. Word has length 391 [2022-01-11 03:38:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:48,955 INFO L470 AbstractCegarLoop]: Abstraction has 116900 states and 130068 transitions. [2022-01-11 03:38:48,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 116900 states and 130068 transitions. [2022-01-11 03:38:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-01-11 03:38:49,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:49,021 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:49,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 03:38:49,022 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:49,022 INFO L85 PathProgramCache]: Analyzing trace with hash -109991714, now seen corresponding path program 1 times [2022-01-11 03:38:49,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:49,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390300301] [2022-01-11 03:38:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:49,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-01-11 03:38:49,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:49,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390300301] [2022-01-11 03:38:49,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390300301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:49,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:49,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:49,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674720452] [2022-01-11 03:38:49,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:49,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:38:49,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:38:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:49,482 INFO L87 Difference]: Start difference. First operand 116900 states and 130068 transitions. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:51,306 INFO L93 Difference]: Finished difference Result 248251 states and 275715 transitions. [2022-01-11 03:38:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:38:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2022-01-11 03:38:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:51,646 INFO L225 Difference]: With dead ends: 248251 [2022-01-11 03:38:51,646 INFO L226 Difference]: Without dead ends: 118767 [2022-01-11 03:38:51,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:38:51,677 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 344 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:51,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 118 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-11 03:38:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118767 states. [2022-01-11 03:38:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118767 to 111027. [2022-01-11 03:38:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111027 states, 111026 states have (on average 1.0784050582746383) internal successors, (119731), 111026 states have internal predecessors, (119731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111027 states to 111027 states and 119731 transitions. [2022-01-11 03:38:53,275 INFO L78 Accepts]: Start accepts. Automaton has 111027 states and 119731 transitions. Word has length 403 [2022-01-11 03:38:53,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:53,275 INFO L470 AbstractCegarLoop]: Abstraction has 111027 states and 119731 transitions. [2022-01-11 03:38:53,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:53,276 INFO L276 IsEmpty]: Start isEmpty. Operand 111027 states and 119731 transitions. [2022-01-11 03:38:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-11 03:38:53,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:53,316 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:53,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 03:38:53,317 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1680591069, now seen corresponding path program 1 times [2022-01-11 03:38:53,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336327901] [2022-01-11 03:38:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:53,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-01-11 03:38:53,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:53,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336327901] [2022-01-11 03:38:53,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336327901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:53,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:53,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:38:53,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811534619] [2022-01-11 03:38:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:53,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:53,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:53,538 INFO L87 Difference]: Start difference. First operand 111027 states and 119731 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:54,798 INFO L93 Difference]: Finished difference Result 219821 states and 236720 transitions. [2022-01-11 03:38:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:54,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 421 [2022-01-11 03:38:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:54,932 INFO L225 Difference]: With dead ends: 219821 [2022-01-11 03:38:54,933 INFO L226 Difference]: Without dead ends: 105954 [2022-01-11 03:38:54,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:54,993 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 209 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:54,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 290 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:38:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105954 states. [2022-01-11 03:38:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105954 to 83602. [2022-01-11 03:38:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83602 states, 83601 states have (on average 1.069688161624861) internal successors, (89427), 83601 states have internal predecessors, (89427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83602 states to 83602 states and 89427 transitions. [2022-01-11 03:38:56,436 INFO L78 Accepts]: Start accepts. Automaton has 83602 states and 89427 transitions. Word has length 421 [2022-01-11 03:38:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:38:56,436 INFO L470 AbstractCegarLoop]: Abstraction has 83602 states and 89427 transitions. [2022-01-11 03:38:56,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 83602 states and 89427 transitions. [2022-01-11 03:38:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-01-11 03:38:56,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:38:56,469 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:38:56,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 03:38:56,469 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:38:56,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:38:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2067236105, now seen corresponding path program 1 times [2022-01-11 03:38:56,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:38:56,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23885004] [2022-01-11 03:38:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:38:56,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:38:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:38:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-01-11 03:38:56,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:38:56,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23885004] [2022-01-11 03:38:56,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23885004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:38:56,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:38:56,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:38:56,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844118827] [2022-01-11 03:38:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:38:56,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:38:56,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:38:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:38:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:56,813 INFO L87 Difference]: Start difference. First operand 83602 states and 89427 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:38:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:38:57,931 INFO L93 Difference]: Finished difference Result 245713 states and 262905 transitions. [2022-01-11 03:38:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:38:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 425 [2022-01-11 03:38:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:38:58,156 INFO L225 Difference]: With dead ends: 245713 [2022-01-11 03:38:58,157 INFO L226 Difference]: Without dead ends: 162113 [2022-01-11 03:38:58,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:38:58,218 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 177 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:38:58,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 470 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 03:38:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162113 states. [2022-01-11 03:39:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162113 to 159874. [2022-01-11 03:39:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159874 states, 159873 states have (on average 1.070631063406579) internal successors, (171165), 159873 states have internal predecessors, (171165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159874 states to 159874 states and 171165 transitions. [2022-01-11 03:39:00,581 INFO L78 Accepts]: Start accepts. Automaton has 159874 states and 171165 transitions. Word has length 425 [2022-01-11 03:39:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:00,581 INFO L470 AbstractCegarLoop]: Abstraction has 159874 states and 171165 transitions. [2022-01-11 03:39:00,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 159874 states and 171165 transitions. [2022-01-11 03:39:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-01-11 03:39:00,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:00,611 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:00,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 03:39:00,612 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2015627020, now seen corresponding path program 1 times [2022-01-11 03:39:00,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:00,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304668796] [2022-01-11 03:39:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:00,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-01-11 03:39:00,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:00,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304668796] [2022-01-11 03:39:00,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304668796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:00,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:00,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:39:00,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869356155] [2022-01-11 03:39:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:00,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:39:00,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:39:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:39:00,846 INFO L87 Difference]: Start difference. First operand 159874 states and 171165 transitions. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:02,854 INFO L93 Difference]: Finished difference Result 321601 states and 344399 transitions. [2022-01-11 03:39:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:39:02,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2022-01-11 03:39:02,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:02,855 INFO L225 Difference]: With dead ends: 321601 [2022-01-11 03:39:02,855 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 03:39:02,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:39:02,931 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 288 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:02,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 339 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 03:39:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 03:39:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 03:39:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 03:39:02,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 454 [2022-01-11 03:39:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:02,932 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 03:39:02,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:02,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 03:39:02,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 03:39:02,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 03:39:02,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 03:39:02,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.