/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:29:19,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:29:19,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:29:19,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:29:19,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:29:19,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:29:19,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:29:19,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:29:19,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:29:19,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:29:19,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:29:19,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:29:19,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:29:19,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:29:19,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:29:19,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:29:19,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:29:19,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:29:19,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:29:19,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:29:19,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:29:19,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:29:19,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:29:19,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:29:19,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:29:19,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:29:19,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:29:19,619 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:29:19,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:29:19,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:29:19,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:29:19,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:29:19,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:29:19,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:29:19,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:19,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:29:19,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:29:19,626 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:29:19,626 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:29:19,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:29:19,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:29:19,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:29:19,850 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:29:19,850 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:29:19,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2022-01-11 00:29:19,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a5113a0/ecc37c4cb4fc4492a717a1fa28850f48/FLAGe30680ab0 [2022-01-11 00:29:20,255 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:29:20,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2022-01-11 00:29:20,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a5113a0/ecc37c4cb4fc4492a717a1fa28850f48/FLAGe30680ab0 [2022-01-11 00:29:20,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a5113a0/ecc37c4cb4fc4492a717a1fa28850f48 [2022-01-11 00:29:20,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:29:20,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:29:20,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:20,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:29:20,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:29:20,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47083406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20, skipping insertion in model container [2022-01-11 00:29:20,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:29:20,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:29:20,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2022-01-11 00:29:20,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:20,501 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:29:20,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2022-01-11 00:29:20,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:29:20,550 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:29:20,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20 WrapperNode [2022-01-11 00:29:20,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:29:20,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:20,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:29:20,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:29:20,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,604 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 462 [2022-01-11 00:29:20,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:29:20,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:29:20,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:29:20,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:29:20,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:29:20,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:29:20,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:29:20,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:29:20,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (1/1) ... [2022-01-11 00:29:20,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:29:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:29:20,685 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 00:29:20,686 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 00:29:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:29:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:29:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:29:20,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:29:20,830 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:29:20,831 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:29:21,319 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:29:21,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:29:21,325 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:29:21,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21 BoogieIcfgContainer [2022-01-11 00:29:21,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:29:21,327 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:29:21,327 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:29:21,332 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:29:21,334 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21" (1/1) ... [2022-01-11 00:29:21,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:21 BasicIcfg [2022-01-11 00:29:21,637 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:29:21,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:29:21,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:29:21,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:29:21,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:29:20" (1/4) ... [2022-01-11 00:29:21,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acefa83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:21, skipping insertion in model container [2022-01-11 00:29:21,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:29:20" (2/4) ... [2022-01-11 00:29:21,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acefa83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:29:21, skipping insertion in model container [2022-01-11 00:29:21,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:29:21" (3/4) ... [2022-01-11 00:29:21,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acefa83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:29:21, skipping insertion in model container [2022-01-11 00:29:21,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:29:21" (4/4) ... [2022-01-11 00:29:21,645 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 00:29:21,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:29:21,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:29:21,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:29:21,703 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 00:29:21,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:29:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 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 00:29:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:21,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:21,725 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] [2022-01-11 00:29:21,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1398747681, now seen corresponding path program 1 times [2022-01-11 00:29:21,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:21,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069332038] [2022-01-11 00:29:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:21,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:21,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:21,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069332038] [2022-01-11 00:29:21,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069332038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:21,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:21,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:29:21,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59071834] [2022-01-11 00:29:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:21,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:29:21,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:29:21,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:29:21,983 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 00:29:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,014 INFO L93 Difference]: Finished difference Result 235 states and 403 transitions. [2022-01-11 00:29:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:29:22,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-01-11 00:29:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,025 INFO L225 Difference]: With dead ends: 235 [2022-01-11 00:29:22,025 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 00:29:22,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:29:22,030 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 00:29:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-01-11 00:29:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 144 states have internal predecessors, (250), 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 00:29:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 250 transitions. [2022-01-11 00:29:22,076 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 250 transitions. Word has length 37 [2022-01-11 00:29:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,077 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 250 transitions. [2022-01-11 00:29:22,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 00:29:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 250 transitions. [2022-01-11 00:29:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:29:22,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,082 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] [2022-01-11 00:29:22,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:29:22,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash 989923456, now seen corresponding path program 1 times [2022-01-11 00:29:22,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653999961] [2022-01-11 00:29:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,286 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 00:29:22,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653999961] [2022-01-11 00:29:22,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653999961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:22,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814315231] [2022-01-11 00:29:22,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:22,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:22,290 INFO L87 Difference]: Start difference. First operand 145 states and 250 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:29:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,369 INFO L93 Difference]: Finished difference Result 234 states and 396 transitions. [2022-01-11 00:29:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-01-11 00:29:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,373 INFO L225 Difference]: With dead ends: 234 [2022-01-11 00:29:22,373 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 00:29:22,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:29:22,374 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 00:29:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-01-11 00:29:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 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 00:29:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2022-01-11 00:29:22,384 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 37 [2022-01-11 00:29:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,384 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2022-01-11 00:29:22,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:29:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2022-01-11 00:29:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 00:29:22,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,385 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] [2022-01-11 00:29:22,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:29:22,386 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1440046453, now seen corresponding path program 1 times [2022-01-11 00:29:22,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27226079] [2022-01-11 00:29:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,544 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 00:29:22,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27226079] [2022-01-11 00:29:22,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27226079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:22,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812733027] [2022-01-11 00:29:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:22,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:22,546 INFO L87 Difference]: Start difference. First operand 145 states and 220 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 00:29:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,581 INFO L93 Difference]: Finished difference Result 297 states and 472 transitions. [2022-01-11 00:29:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-11 00:29:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,583 INFO L225 Difference]: With dead ends: 297 [2022-01-11 00:29:22,584 INFO L226 Difference]: Without dead ends: 212 [2022-01-11 00:29:22,588 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 00:29:22,590 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 115 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 374 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-11 00:29:22,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2022-01-11 00:29:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5480769230769231) internal successors, (322), 208 states have internal predecessors, (322), 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 00:29:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 322 transitions. [2022-01-11 00:29:22,598 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 322 transitions. Word has length 66 [2022-01-11 00:29:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,599 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 322 transitions. [2022-01-11 00:29:22,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 00:29:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 322 transitions. [2022-01-11 00:29:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:29:22,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,600 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] [2022-01-11 00:29:22,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:29:22,600 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash -675771091, now seen corresponding path program 1 times [2022-01-11 00:29:22,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126888746] [2022-01-11 00:29:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,708 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 00:29:22,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126888746] [2022-01-11 00:29:22,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126888746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:22,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265960351] [2022-01-11 00:29:22,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:22,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:22,711 INFO L87 Difference]: Start difference. First operand 209 states and 322 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 00:29:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,752 INFO L93 Difference]: Finished difference Result 591 states and 904 transitions. [2022-01-11 00:29:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2022-01-11 00:29:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,755 INFO L225 Difference]: With dead ends: 591 [2022-01-11 00:29:22,755 INFO L226 Difference]: Without dead ends: 407 [2022-01-11 00:29:22,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:22,764 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 569 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 419 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-11 00:29:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-01-11 00:29:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.5346534653465347) internal successors, (620), 404 states have internal predecessors, (620), 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 00:29:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 620 transitions. [2022-01-11 00:29:22,782 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 620 transitions. Word has length 68 [2022-01-11 00:29:22,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,782 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 620 transitions. [2022-01-11 00:29:22,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 00:29:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 620 transitions. [2022-01-11 00:29:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:22,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,783 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] [2022-01-11 00:29:22,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:29:22,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -78252645, now seen corresponding path program 1 times [2022-01-11 00:29:22,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212355989] [2022-01-11 00:29:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212355989] [2022-01-11 00:29:22,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212355989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:22,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712709293] [2022-01-11 00:29:22,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:22,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:22,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:22,862 INFO L87 Difference]: Start difference. First operand 405 states and 620 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 00:29:22,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,892 INFO L93 Difference]: Finished difference Result 844 states and 1330 transitions. [2022-01-11 00:29:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-11 00:29:22,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:22,896 INFO L225 Difference]: With dead ends: 844 [2022-01-11 00:29:22,896 INFO L226 Difference]: Without dead ends: 553 [2022-01-11 00:29:22,896 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 00:29:22,897 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 120 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:22,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:22,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-01-11 00:29:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 537. [2022-01-11 00:29:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.546641791044776) internal successors, (829), 536 states have internal predecessors, (829), 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 00:29:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 829 transitions. [2022-01-11 00:29:22,913 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 829 transitions. Word has length 69 [2022-01-11 00:29:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:22,914 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 829 transitions. [2022-01-11 00:29:22,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 00:29:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 829 transitions. [2022-01-11 00:29:22,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 00:29:22,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:22,921 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] [2022-01-11 00:29:22,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:29:22,921 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1080232415, now seen corresponding path program 1 times [2022-01-11 00:29:22,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:22,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775870298] [2022-01-11 00:29:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:22,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:22,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:22,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775870298] [2022-01-11 00:29:22,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775870298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:22,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:22,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:22,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433158604] [2022-01-11 00:29:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:22,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:22,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:22,977 INFO L87 Difference]: Start difference. First operand 537 states and 829 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 00:29:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:22,997 INFO L93 Difference]: Finished difference Result 1573 states and 2423 transitions. [2022-01-11 00:29:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-11 00:29:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,002 INFO L225 Difference]: With dead ends: 1573 [2022-01-11 00:29:23,002 INFO L226 Difference]: Without dead ends: 1064 [2022-01-11 00:29:23,003 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 00:29:23,004 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 209 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 637 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-11 00:29:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 539. [2022-01-11 00:29:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5446096654275092) internal successors, (831), 538 states have internal predecessors, (831), 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 00:29:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 831 transitions. [2022-01-11 00:29:23,019 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 831 transitions. Word has length 69 [2022-01-11 00:29:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,020 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 831 transitions. [2022-01-11 00:29:23,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 00:29:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 831 transitions. [2022-01-11 00:29:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:23,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,022 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] [2022-01-11 00:29:23,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:29:23,022 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1947452488, now seen corresponding path program 1 times [2022-01-11 00:29:23,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338326478] [2022-01-11 00:29:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,135 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 00:29:23,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338326478] [2022-01-11 00:29:23,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338326478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:23,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452322736] [2022-01-11 00:29:23,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:23,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:23,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:23,138 INFO L87 Difference]: Start difference. First operand 539 states and 831 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 00:29:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,188 INFO L93 Difference]: Finished difference Result 1577 states and 2429 transitions. [2022-01-11 00:29:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2022-01-11 00:29:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,192 INFO L225 Difference]: With dead ends: 1577 [2022-01-11 00:29:23,192 INFO L226 Difference]: Without dead ends: 1050 [2022-01-11 00:29:23,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:23,194 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 526 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 698 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-01-11 00:29:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1048. [2022-01-11 00:29:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 1.5300859598853869) internal successors, (1602), 1047 states have internal predecessors, (1602), 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 00:29:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1602 transitions. [2022-01-11 00:29:23,219 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1602 transitions. Word has length 70 [2022-01-11 00:29:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,220 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1602 transitions. [2022-01-11 00:29:23,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 00:29:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1602 transitions. [2022-01-11 00:29:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 00:29:23,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,221 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] [2022-01-11 00:29:23,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:29:23,221 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1781239468, now seen corresponding path program 1 times [2022-01-11 00:29:23,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741914265] [2022-01-11 00:29:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741914265] [2022-01-11 00:29:23,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741914265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:23,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102529785] [2022-01-11 00:29:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:23,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:23,280 INFO L87 Difference]: Start difference. First operand 1048 states and 1602 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 00:29:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,307 INFO L93 Difference]: Finished difference Result 1826 states and 2785 transitions. [2022-01-11 00:29:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:23,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2022-01-11 00:29:23,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,310 INFO L225 Difference]: With dead ends: 1826 [2022-01-11 00:29:23,310 INFO L226 Difference]: Without dead ends: 794 [2022-01-11 00:29:23,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:23,312 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 69 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 695 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-11 00:29:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2022-01-11 00:29:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.5220680958385877) internal successors, (1207), 793 states have internal predecessors, (1207), 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 00:29:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1207 transitions. [2022-01-11 00:29:23,331 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1207 transitions. Word has length 70 [2022-01-11 00:29:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,331 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1207 transitions. [2022-01-11 00:29:23,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 00:29:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1207 transitions. [2022-01-11 00:29:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:29:23,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,332 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] [2022-01-11 00:29:23,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:29:23,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1129936617, now seen corresponding path program 1 times [2022-01-11 00:29:23,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129912737] [2022-01-11 00:29:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129912737] [2022-01-11 00:29:23,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129912737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:23,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486762759] [2022-01-11 00:29:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:23,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:23,382 INFO L87 Difference]: Start difference. First operand 794 states and 1207 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 00:29:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,416 INFO L93 Difference]: Finished difference Result 1619 states and 2537 transitions. [2022-01-11 00:29:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2022-01-11 00:29:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,419 INFO L225 Difference]: With dead ends: 1619 [2022-01-11 00:29:23,419 INFO L226 Difference]: Without dead ends: 989 [2022-01-11 00:29:23,420 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 00:29:23,420 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 122 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 500 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-01-11 00:29:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 987. [2022-01-11 00:29:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 986 states have (on average 1.5446247464503042) internal successors, (1523), 986 states have internal predecessors, (1523), 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 00:29:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1523 transitions. [2022-01-11 00:29:23,443 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1523 transitions. Word has length 71 [2022-01-11 00:29:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,444 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1523 transitions. [2022-01-11 00:29:23,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 00:29:23,444 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1523 transitions. [2022-01-11 00:29:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 00:29:23,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,445 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] [2022-01-11 00:29:23,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:29:23,445 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1577004108, now seen corresponding path program 1 times [2022-01-11 00:29:23,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210697603] [2022-01-11 00:29:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,475 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 00:29:23,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210697603] [2022-01-11 00:29:23,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210697603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:23,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254968706] [2022-01-11 00:29:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:23,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:23,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:23,477 INFO L87 Difference]: Start difference. First operand 987 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 00:29:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,501 INFO L93 Difference]: Finished difference Result 1949 states and 3000 transitions. [2022-01-11 00:29:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:23,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-11 00:29:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,505 INFO L225 Difference]: With dead ends: 1949 [2022-01-11 00:29:23,505 INFO L226 Difference]: Without dead ends: 1303 [2022-01-11 00:29:23,506 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 00:29:23,506 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 206 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 439 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-11 00:29:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 987. [2022-01-11 00:29:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 986 states have (on average 1.5436105476673427) internal successors, (1522), 986 states have internal predecessors, (1522), 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 00:29:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1522 transitions. [2022-01-11 00:29:23,532 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1522 transitions. Word has length 72 [2022-01-11 00:29:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,532 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1522 transitions. [2022-01-11 00:29:23,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 00:29:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1522 transitions. [2022-01-11 00:29:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 00:29:23,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,533 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] [2022-01-11 00:29:23,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:29:23,533 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,533 INFO L85 PathProgramCache]: Analyzing trace with hash -131082838, now seen corresponding path program 1 times [2022-01-11 00:29:23,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633175638] [2022-01-11 00:29:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,615 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 00:29:23,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633175638] [2022-01-11 00:29:23,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633175638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:23,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191880123] [2022-01-11 00:29:23,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:23,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:23,617 INFO L87 Difference]: Start difference. First operand 987 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 00:29:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,694 INFO L93 Difference]: Finished difference Result 2529 states and 4004 transitions. [2022-01-11 00:29:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-11 00:29:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,700 INFO L225 Difference]: With dead ends: 2529 [2022-01-11 00:29:23,700 INFO L226 Difference]: Without dead ends: 1712 [2022-01-11 00:29:23,702 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 00:29:23,702 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 396 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2022-01-11 00:29:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1698. [2022-01-11 00:29:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 1.5615792575132588) internal successors, (2650), 1697 states have internal predecessors, (2650), 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 00:29:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2650 transitions. [2022-01-11 00:29:23,767 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2650 transitions. Word has length 73 [2022-01-11 00:29:23,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:23,767 INFO L470 AbstractCegarLoop]: Abstraction has 1698 states and 2650 transitions. [2022-01-11 00:29:23,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 00:29:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2650 transitions. [2022-01-11 00:29:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 00:29:23,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:23,768 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] [2022-01-11 00:29:23,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:29:23,768 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 707636287, now seen corresponding path program 1 times [2022-01-11 00:29:23,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:23,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540318601] [2022-01-11 00:29:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:23,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:23,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:23,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540318601] [2022-01-11 00:29:23,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540318601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:23,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:23,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:23,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165176940] [2022-01-11 00:29:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:23,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:23,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:23,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:23,851 INFO L87 Difference]: Start difference. First operand 1698 states and 2650 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 00:29:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:23,961 INFO L93 Difference]: Finished difference Result 4943 states and 7704 transitions. [2022-01-11 00:29:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:23,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2022-01-11 00:29:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:23,971 INFO L225 Difference]: With dead ends: 4943 [2022-01-11 00:29:23,971 INFO L226 Difference]: Without dead ends: 3292 [2022-01-11 00:29:23,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:23,975 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 516 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:23,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 424 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2022-01-11 00:29:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3290. [2022-01-11 00:29:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.5491030708422013) internal successors, (5095), 3289 states have internal predecessors, (5095), 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 00:29:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 5095 transitions. [2022-01-11 00:29:24,117 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 5095 transitions. Word has length 75 [2022-01-11 00:29:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:24,118 INFO L470 AbstractCegarLoop]: Abstraction has 3290 states and 5095 transitions. [2022-01-11 00:29:24,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 00:29:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 5095 transitions. [2022-01-11 00:29:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:24,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:24,120 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] [2022-01-11 00:29:24,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:29:24,120 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:24,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash 421067398, now seen corresponding path program 1 times [2022-01-11 00:29:24,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:24,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226195712] [2022-01-11 00:29:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:24,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:24,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226195712] [2022-01-11 00:29:24,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226195712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:24,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:24,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:24,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836990337] [2022-01-11 00:29:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:24,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:24,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:24,205 INFO L87 Difference]: Start difference. First operand 3290 states and 5095 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 00:29:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:24,358 INFO L93 Difference]: Finished difference Result 7715 states and 12146 transitions. [2022-01-11 00:29:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:24,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-11 00:29:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:24,371 INFO L225 Difference]: With dead ends: 7715 [2022-01-11 00:29:24,371 INFO L226 Difference]: Without dead ends: 4739 [2022-01-11 00:29:24,375 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 00:29:24,376 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 121 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:24,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 416 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2022-01-11 00:29:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 4577. [2022-01-11 00:29:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 4576 states have (on average 1.5493881118881119) internal successors, (7090), 4576 states have internal predecessors, (7090), 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 00:29:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 7090 transitions. [2022-01-11 00:29:24,520 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 7090 transitions. Word has length 76 [2022-01-11 00:29:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:24,520 INFO L470 AbstractCegarLoop]: Abstraction has 4577 states and 7090 transitions. [2022-01-11 00:29:24,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 00:29:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 7090 transitions. [2022-01-11 00:29:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:24,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:24,532 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] [2022-01-11 00:29:24,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:29:24,533 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1928574555, now seen corresponding path program 1 times [2022-01-11 00:29:24,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:24,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878335685] [2022-01-11 00:29:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:24,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:24,583 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 00:29:24,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:24,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878335685] [2022-01-11 00:29:24,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878335685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:24,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:24,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:24,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818332738] [2022-01-11 00:29:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:24,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:24,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:24,584 INFO L87 Difference]: Start difference. First operand 4577 states and 7090 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 00:29:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:24,856 INFO L93 Difference]: Finished difference Result 12489 states and 19441 transitions. [2022-01-11 00:29:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2022-01-11 00:29:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:24,889 INFO L225 Difference]: With dead ends: 12489 [2022-01-11 00:29:24,889 INFO L226 Difference]: Without dead ends: 8086 [2022-01-11 00:29:24,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:29:24,895 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 394 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:24,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 574 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-01-11 00:29:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 8084. [2022-01-11 00:29:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8084 states, 8083 states have (on average 1.5358159099344302) internal successors, (12414), 8083 states have internal predecessors, (12414), 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 00:29:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8084 states to 8084 states and 12414 transitions. [2022-01-11 00:29:25,199 INFO L78 Accepts]: Start accepts. Automaton has 8084 states and 12414 transitions. Word has length 76 [2022-01-11 00:29:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:25,200 INFO L470 AbstractCegarLoop]: Abstraction has 8084 states and 12414 transitions. [2022-01-11 00:29:25,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 00:29:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8084 states and 12414 transitions. [2022-01-11 00:29:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:29:25,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:25,203 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] [2022-01-11 00:29:25,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:29:25,203 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash -974345660, now seen corresponding path program 1 times [2022-01-11 00:29:25,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:25,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840775820] [2022-01-11 00:29:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:25,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:25,252 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 00:29:25,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:25,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840775820] [2022-01-11 00:29:25,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840775820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:25,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:25,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:25,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459426447] [2022-01-11 00:29:25,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:25,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:25,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:25,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:25,254 INFO L87 Difference]: Start difference. First operand 8084 states and 12414 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 00:29:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:25,694 INFO L93 Difference]: Finished difference Result 23962 states and 36877 transitions. [2022-01-11 00:29:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-11 00:29:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:25,725 INFO L225 Difference]: With dead ends: 23962 [2022-01-11 00:29:25,725 INFO L226 Difference]: Without dead ends: 16032 [2022-01-11 00:29:25,734 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 00:29:25,735 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 195 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:25,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 617 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16032 states. [2022-01-11 00:29:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16032 to 8090. [2022-01-11 00:29:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8089 states have (on average 1.5354184695265174) internal successors, (12420), 8089 states have internal predecessors, (12420), 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 00:29:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 12420 transitions. [2022-01-11 00:29:26,128 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 12420 transitions. Word has length 76 [2022-01-11 00:29:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:26,128 INFO L470 AbstractCegarLoop]: Abstraction has 8090 states and 12420 transitions. [2022-01-11 00:29:26,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 00:29:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 12420 transitions. [2022-01-11 00:29:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:26,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:26,130 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] [2022-01-11 00:29:26,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:29:26,130 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:26,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:26,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1013610811, now seen corresponding path program 1 times [2022-01-11 00:29:26,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:26,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315298352] [2022-01-11 00:29:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:26,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:26,182 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 00:29:26,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315298352] [2022-01-11 00:29:26,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315298352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:26,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:26,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:26,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228752333] [2022-01-11 00:29:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:26,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:26,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:26,184 INFO L87 Difference]: Start difference. First operand 8090 states and 12420 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:29:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:26,620 INFO L93 Difference]: Finished difference Result 18806 states and 28917 transitions. [2022-01-11 00:29:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:26,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-11 00:29:26,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:26,642 INFO L225 Difference]: With dead ends: 18806 [2022-01-11 00:29:26,642 INFO L226 Difference]: Without dead ends: 13540 [2022-01-11 00:29:26,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:29:26,647 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 497 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:26,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 517 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13540 states. [2022-01-11 00:29:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13540 to 8087. [2022-01-11 00:29:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8086 states have (on average 1.5351224338362601) internal successors, (12413), 8086 states have internal predecessors, (12413), 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 00:29:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 12413 transitions. [2022-01-11 00:29:26,991 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 12413 transitions. Word has length 77 [2022-01-11 00:29:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:26,992 INFO L470 AbstractCegarLoop]: Abstraction has 8087 states and 12413 transitions. [2022-01-11 00:29:26,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:29:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 12413 transitions. [2022-01-11 00:29:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:26,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:26,994 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] [2022-01-11 00:29:26,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:29:26,994 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:26,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1871247135, now seen corresponding path program 1 times [2022-01-11 00:29:26,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:26,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205776022] [2022-01-11 00:29:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:26,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:27,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:27,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205776022] [2022-01-11 00:29:27,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205776022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:27,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:27,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:27,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160914014] [2022-01-11 00:29:27,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:27,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:27,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:27,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:27,039 INFO L87 Difference]: Start difference. First operand 8087 states and 12413 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:29:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:27,268 INFO L93 Difference]: Finished difference Result 12139 states and 18662 transitions. [2022-01-11 00:29:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-11 00:29:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:27,278 INFO L225 Difference]: With dead ends: 12139 [2022-01-11 00:29:27,278 INFO L226 Difference]: Without dead ends: 6868 [2022-01-11 00:29:27,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:27,287 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 47 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:27,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 673 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2022-01-11 00:29:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6868. [2022-01-11 00:29:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6868 states, 6867 states have (on average 1.5334207077326343) internal successors, (10530), 6867 states have internal predecessors, (10530), 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 00:29:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6868 states to 6868 states and 10530 transitions. [2022-01-11 00:29:27,583 INFO L78 Accepts]: Start accepts. Automaton has 6868 states and 10530 transitions. Word has length 77 [2022-01-11 00:29:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:27,583 INFO L470 AbstractCegarLoop]: Abstraction has 6868 states and 10530 transitions. [2022-01-11 00:29:27,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:29:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6868 states and 10530 transitions. [2022-01-11 00:29:27,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:27,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:27,585 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] [2022-01-11 00:29:27,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:29:27,586 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash 745807334, now seen corresponding path program 1 times [2022-01-11 00:29:27,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:27,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473209575] [2022-01-11 00:29:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:27,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:27,684 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 00:29:27,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473209575] [2022-01-11 00:29:27,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473209575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:27,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:27,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:27,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23161413] [2022-01-11 00:29:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:27,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:27,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:27,685 INFO L87 Difference]: Start difference. First operand 6868 states and 10530 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 00:29:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,105 INFO L93 Difference]: Finished difference Result 16262 states and 24939 transitions. [2022-01-11 00:29:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:29:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-01-11 00:29:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,122 INFO L225 Difference]: With dead ends: 16262 [2022-01-11 00:29:28,122 INFO L226 Difference]: Without dead ends: 10924 [2022-01-11 00:29:28,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:29:28,127 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 521 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 817 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10924 states. [2022-01-11 00:29:28,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10924 to 7048. [2022-01-11 00:29:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7048 states, 7047 states have (on average 1.5223499361430395) internal successors, (10728), 7047 states have internal predecessors, (10728), 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 00:29:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 10728 transitions. [2022-01-11 00:29:28,376 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 10728 transitions. Word has length 77 [2022-01-11 00:29:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,376 INFO L470 AbstractCegarLoop]: Abstraction has 7048 states and 10728 transitions. [2022-01-11 00:29:28,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 00:29:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 10728 transitions. [2022-01-11 00:29:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 00:29:28,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,378 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] [2022-01-11 00:29:28,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:29:28,379 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash -111828990, now seen corresponding path program 1 times [2022-01-11 00:29:28,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980979012] [2022-01-11 00:29:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,427 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 00:29:28,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980979012] [2022-01-11 00:29:28,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980979012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:28,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914172686] [2022-01-11 00:29:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:28,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:28,429 INFO L87 Difference]: Start difference. First operand 7048 states and 10728 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:29:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:28,657 INFO L93 Difference]: Finished difference Result 13049 states and 19848 transitions. [2022-01-11 00:29:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:28,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-11 00:29:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:28,666 INFO L225 Difference]: With dead ends: 13049 [2022-01-11 00:29:28,666 INFO L226 Difference]: Without dead ends: 6044 [2022-01-11 00:29:28,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:28,670 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 45 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:28,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 667 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6044 states. [2022-01-11 00:29:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6044 to 6044. [2022-01-11 00:29:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6044 states, 6043 states have (on average 1.5187820618897898) internal successors, (9178), 6043 states have internal predecessors, (9178), 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 00:29:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 9178 transitions. [2022-01-11 00:29:28,868 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 9178 transitions. Word has length 77 [2022-01-11 00:29:28,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:28,868 INFO L470 AbstractCegarLoop]: Abstraction has 6044 states and 9178 transitions. [2022-01-11 00:29:28,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 00:29:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 9178 transitions. [2022-01-11 00:29:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:29:28,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:28,872 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] [2022-01-11 00:29:28,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:29:28,872 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash -718264445, now seen corresponding path program 1 times [2022-01-11 00:29:28,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:28,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828803615] [2022-01-11 00:29:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:28,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:28,923 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 00:29:28,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:28,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828803615] [2022-01-11 00:29:28,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828803615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:28,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:28,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:28,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845330057] [2022-01-11 00:29:28,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:28,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:28,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:28,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:28,925 INFO L87 Difference]: Start difference. First operand 6044 states and 9178 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 00:29:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:29,152 INFO L93 Difference]: Finished difference Result 11488 states and 17668 transitions. [2022-01-11 00:29:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-11 00:29:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:29,170 INFO L225 Difference]: With dead ends: 11488 [2022-01-11 00:29:29,170 INFO L226 Difference]: Without dead ends: 7664 [2022-01-11 00:29:29,176 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 00:29:29,177 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 113 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:29,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 482 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:29,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2022-01-11 00:29:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 7662. [2022-01-11 00:29:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7661 states have (on average 1.521994517686986) internal successors, (11660), 7661 states have internal predecessors, (11660), 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 00:29:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 11660 transitions. [2022-01-11 00:29:29,508 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 11660 transitions. Word has length 78 [2022-01-11 00:29:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:29,508 INFO L470 AbstractCegarLoop]: Abstraction has 7662 states and 11660 transitions. [2022-01-11 00:29:29,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 00:29:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 11660 transitions. [2022-01-11 00:29:29,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:29:29,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:29,510 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] [2022-01-11 00:29:29,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:29:29,510 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1917460409, now seen corresponding path program 1 times [2022-01-11 00:29:29,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:29,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664245125] [2022-01-11 00:29:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:29,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:29,570 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 00:29:29,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:29,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664245125] [2022-01-11 00:29:29,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664245125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:29,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:29,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:29,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699496875] [2022-01-11 00:29:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:29,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:29,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:29,573 INFO L87 Difference]: Start difference. First operand 7662 states and 11660 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 00:29:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:29,860 INFO L93 Difference]: Finished difference Result 14302 states and 21768 transitions. [2022-01-11 00:29:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-01-11 00:29:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:29,878 INFO L225 Difference]: With dead ends: 14302 [2022-01-11 00:29:29,879 INFO L226 Difference]: Without dead ends: 10573 [2022-01-11 00:29:29,886 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 00:29:29,887 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 191 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:29,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 518 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2022-01-11 00:29:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 7662. [2022-01-11 00:29:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7661 states have (on average 1.5217334551625115) internal successors, (11658), 7661 states have internal predecessors, (11658), 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 00:29:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 11658 transitions. [2022-01-11 00:29:30,357 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 11658 transitions. Word has length 79 [2022-01-11 00:29:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:30,357 INFO L470 AbstractCegarLoop]: Abstraction has 7662 states and 11658 transitions. [2022-01-11 00:29:30,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 00:29:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 11658 transitions. [2022-01-11 00:29:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:29:30,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:30,359 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] [2022-01-11 00:29:30,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:29:30,360 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:30,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1051067373, now seen corresponding path program 1 times [2022-01-11 00:29:30,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:30,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841106400] [2022-01-11 00:29:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:30,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:30,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:30,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841106400] [2022-01-11 00:29:30,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841106400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:30,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:30,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:30,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645773372] [2022-01-11 00:29:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:30,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:30,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:30,509 INFO L87 Difference]: Start difference. First operand 7662 states and 11658 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 00:29:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:31,145 INFO L93 Difference]: Finished difference Result 21066 states and 32420 transitions. [2022-01-11 00:29:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:31,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-11 00:29:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:31,170 INFO L225 Difference]: With dead ends: 21066 [2022-01-11 00:29:31,170 INFO L226 Difference]: Without dead ends: 13884 [2022-01-11 00:29:31,184 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 00:29:31,185 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:31,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 386 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13884 states. [2022-01-11 00:29:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13884 to 13754. [2022-01-11 00:29:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13754 states, 13753 states have (on average 1.5209772413291645) internal successors, (20918), 13753 states have internal predecessors, (20918), 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 00:29:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13754 states to 13754 states and 20918 transitions. [2022-01-11 00:29:31,797 INFO L78 Accepts]: Start accepts. Automaton has 13754 states and 20918 transitions. Word has length 80 [2022-01-11 00:29:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:31,798 INFO L470 AbstractCegarLoop]: Abstraction has 13754 states and 20918 transitions. [2022-01-11 00:29:31,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 00:29:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 13754 states and 20918 transitions. [2022-01-11 00:29:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:31,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:31,799 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] [2022-01-11 00:29:31,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:29:31,800 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash 517858466, now seen corresponding path program 1 times [2022-01-11 00:29:31,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435177955] [2022-01-11 00:29:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:31,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:31,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:31,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435177955] [2022-01-11 00:29:31,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435177955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:31,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:31,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:31,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507437416] [2022-01-11 00:29:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:31,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:31,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:31,856 INFO L87 Difference]: Start difference. First operand 13754 states and 20918 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 00:29:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:32,544 INFO L93 Difference]: Finished difference Result 35031 states and 53390 transitions. [2022-01-11 00:29:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2022-01-11 00:29:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:32,574 INFO L225 Difference]: With dead ends: 35031 [2022-01-11 00:29:32,574 INFO L226 Difference]: Without dead ends: 21757 [2022-01-11 00:29:32,589 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 00:29:32,589 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 129 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:32,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 557 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21757 states. [2022-01-11 00:29:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21757 to 21755. [2022-01-11 00:29:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21755 states, 21754 states have (on average 1.5028040820079065) internal successors, (32692), 21754 states have internal predecessors, (32692), 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 00:29:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21755 states to 21755 states and 32692 transitions. [2022-01-11 00:29:33,432 INFO L78 Accepts]: Start accepts. Automaton has 21755 states and 32692 transitions. Word has length 82 [2022-01-11 00:29:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:33,433 INFO L470 AbstractCegarLoop]: Abstraction has 21755 states and 32692 transitions. [2022-01-11 00:29:33,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 00:29:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 21755 states and 32692 transitions. [2022-01-11 00:29:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:29:33,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:33,435 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] [2022-01-11 00:29:33,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:29:33,435 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1904463198, now seen corresponding path program 1 times [2022-01-11 00:29:33,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:33,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390272428] [2022-01-11 00:29:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:33,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:33,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:33,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390272428] [2022-01-11 00:29:33,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390272428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:33,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:33,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:33,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258862740] [2022-01-11 00:29:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:33,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:33,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:33,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:33,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:33,489 INFO L87 Difference]: Start difference. First operand 21755 states and 32692 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 00:29:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:34,769 INFO L93 Difference]: Finished difference Result 55339 states and 83258 transitions. [2022-01-11 00:29:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:34,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2022-01-11 00:29:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:34,818 INFO L225 Difference]: With dead ends: 55339 [2022-01-11 00:29:34,818 INFO L226 Difference]: Without dead ends: 34217 [2022-01-11 00:29:34,831 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 00:29:34,831 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 132 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:34,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 586 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:34,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34217 states. [2022-01-11 00:29:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34217 to 34215. [2022-01-11 00:29:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34215 states, 34214 states have (on average 1.4833693809551645) internal successors, (50752), 34214 states have internal predecessors, (50752), 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 00:29:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34215 states to 34215 states and 50752 transitions. [2022-01-11 00:29:36,326 INFO L78 Accepts]: Start accepts. Automaton has 34215 states and 50752 transitions. Word has length 82 [2022-01-11 00:29:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:36,326 INFO L470 AbstractCegarLoop]: Abstraction has 34215 states and 50752 transitions. [2022-01-11 00:29:36,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 00:29:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 34215 states and 50752 transitions. [2022-01-11 00:29:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:36,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:36,329 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] [2022-01-11 00:29:36,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:29:36,329 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1936861317, now seen corresponding path program 1 times [2022-01-11 00:29:36,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:36,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336073183] [2022-01-11 00:29:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:36,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:36,528 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 00:29:36,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336073183] [2022-01-11 00:29:36,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336073183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:36,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:36,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:36,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601518754] [2022-01-11 00:29:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:36,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:36,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:36,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:36,530 INFO L87 Difference]: Start difference. First operand 34215 states and 50752 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 00:29:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:38,025 INFO L93 Difference]: Finished difference Result 61708 states and 91520 transitions. [2022-01-11 00:29:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:38,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-11 00:29:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:38,072 INFO L225 Difference]: With dead ends: 61708 [2022-01-11 00:29:38,072 INFO L226 Difference]: Without dead ends: 36298 [2022-01-11 00:29:38,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:38,084 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 487 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:38,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 411 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36298 states. [2022-01-11 00:29:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36298 to 34284. [2022-01-11 00:29:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34284 states, 34283 states have (on average 1.4826590438409708) internal successors, (50830), 34283 states have internal predecessors, (50830), 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 00:29:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34284 states to 34284 states and 50830 transitions. [2022-01-11 00:29:39,679 INFO L78 Accepts]: Start accepts. Automaton has 34284 states and 50830 transitions. Word has length 83 [2022-01-11 00:29:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:39,679 INFO L470 AbstractCegarLoop]: Abstraction has 34284 states and 50830 transitions. [2022-01-11 00:29:39,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 00:29:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 34284 states and 50830 transitions. [2022-01-11 00:29:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 00:29:39,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:39,682 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] [2022-01-11 00:29:39,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:29:39,682 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:39,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2032820506, now seen corresponding path program 1 times [2022-01-11 00:29:39,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:39,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352828447] [2022-01-11 00:29:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:39,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:39,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352828447] [2022-01-11 00:29:39,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352828447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:39,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:39,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:39,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506338496] [2022-01-11 00:29:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:39,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:39,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:39,731 INFO L87 Difference]: Start difference. First operand 34284 states and 50830 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 00:29:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:41,928 INFO L93 Difference]: Finished difference Result 77480 states and 115328 transitions. [2022-01-11 00:29:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:41,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-11 00:29:41,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:42,002 INFO L225 Difference]: With dead ends: 77480 [2022-01-11 00:29:42,002 INFO L226 Difference]: Without dead ends: 48534 [2022-01-11 00:29:42,021 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 00:29:42,022 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 112 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:42,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 410 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48534 states. [2022-01-11 00:29:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48534 to 46420. [2022-01-11 00:29:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46420 states, 46419 states have (on average 1.4703892802516212) internal successors, (68254), 46419 states have internal predecessors, (68254), 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 00:29:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46420 states to 46420 states and 68254 transitions. [2022-01-11 00:29:44,322 INFO L78 Accepts]: Start accepts. Automaton has 46420 states and 68254 transitions. Word has length 83 [2022-01-11 00:29:44,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:44,322 INFO L470 AbstractCegarLoop]: Abstraction has 46420 states and 68254 transitions. [2022-01-11 00:29:44,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 00:29:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 46420 states and 68254 transitions. [2022-01-11 00:29:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:29:44,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:44,325 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] [2022-01-11 00:29:44,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:29:44,325 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1353527827, now seen corresponding path program 1 times [2022-01-11 00:29:44,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:44,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361856081] [2022-01-11 00:29:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:44,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:44,374 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 00:29:44,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361856081] [2022-01-11 00:29:44,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361856081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:44,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:44,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:29:44,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97887540] [2022-01-11 00:29:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:44,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:29:44,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:29:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:29:44,375 INFO L87 Difference]: Start difference. First operand 46420 states and 68254 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 00:29:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:48,373 INFO L93 Difference]: Finished difference Result 138550 states and 203936 transitions. [2022-01-11 00:29:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:29:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2022-01-11 00:29:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:48,532 INFO L225 Difference]: With dead ends: 138550 [2022-01-11 00:29:48,533 INFO L226 Difference]: Without dead ends: 92621 [2022-01-11 00:29:48,568 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 00:29:48,569 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 181 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:48,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 593 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92621 states. [2022-01-11 00:29:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92621 to 46436. [2022-01-11 00:29:51,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46436 states, 46435 states have (on average 1.4702271993108647) internal successors, (68270), 46435 states have internal predecessors, (68270), 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 00:29:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46436 states to 46436 states and 68270 transitions. [2022-01-11 00:29:51,553 INFO L78 Accepts]: Start accepts. Automaton has 46436 states and 68270 transitions. Word has length 84 [2022-01-11 00:29:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:51,553 INFO L470 AbstractCegarLoop]: Abstraction has 46436 states and 68270 transitions. [2022-01-11 00:29:51,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 00:29:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 46436 states and 68270 transitions. [2022-01-11 00:29:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:29:51,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:51,556 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] [2022-01-11 00:29:51,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:29:51,556 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1804302966, now seen corresponding path program 1 times [2022-01-11 00:29:51,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:51,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447828007] [2022-01-11 00:29:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:51,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:29:51,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:51,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447828007] [2022-01-11 00:29:51,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447828007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:51,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:51,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:29:51,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371319839] [2022-01-11 00:29:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:51,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:29:51,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:29:51,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:51,672 INFO L87 Difference]: Start difference. First operand 46436 states and 68270 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 00:29:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:54,158 INFO L93 Difference]: Finished difference Result 95016 states and 139607 transitions. [2022-01-11 00:29:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 85 [2022-01-11 00:29:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:54,230 INFO L225 Difference]: With dead ends: 95016 [2022-01-11 00:29:54,230 INFO L226 Difference]: Without dead ends: 48688 [2022-01-11 00:29:54,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:54,256 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 376 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:54,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 650 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48688 states. [2022-01-11 00:29:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48688 to 46646. [2022-01-11 00:29:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46646 states, 46645 states have (on average 1.4678314931932683) internal successors, (68467), 46645 states have internal predecessors, (68467), 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 00:29:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46646 states to 46646 states and 68467 transitions. [2022-01-11 00:29:56,790 INFO L78 Accepts]: Start accepts. Automaton has 46646 states and 68467 transitions. Word has length 85 [2022-01-11 00:29:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:29:56,790 INFO L470 AbstractCegarLoop]: Abstraction has 46646 states and 68467 transitions. [2022-01-11 00:29:56,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 00:29:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 46646 states and 68467 transitions. [2022-01-11 00:29:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:29:56,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:29:56,793 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] [2022-01-11 00:29:56,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:29:56,793 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:29:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:29:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 844077478, now seen corresponding path program 1 times [2022-01-11 00:29:56,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:29:56,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066803071] [2022-01-11 00:29:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:29:56,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:29:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:29:56,842 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 00:29:56,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:29:56,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066803071] [2022-01-11 00:29:56,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066803071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:29:56,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:29:56,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:29:56,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543930058] [2022-01-11 00:29:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:29:56,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:29:56,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:29:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:29:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:29:56,843 INFO L87 Difference]: Start difference. First operand 46646 states and 68467 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 00:29:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:29:59,193 INFO L93 Difference]: Finished difference Result 81425 states and 119523 transitions. [2022-01-11 00:29:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:29:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 85 [2022-01-11 00:29:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:29:59,260 INFO L225 Difference]: With dead ends: 81425 [2022-01-11 00:29:59,260 INFO L226 Difference]: Without dead ends: 42045 [2022-01-11 00:29:59,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:29:59,283 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 23 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:29:59,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 643 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:29:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42045 states. [2022-01-11 00:30:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42045 to 42045. [2022-01-11 00:30:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42045 states, 42044 states have (on average 1.4655361050328228) internal successors, (61617), 42044 states have internal predecessors, (61617), 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 00:30:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42045 states to 42045 states and 61617 transitions. [2022-01-11 00:30:01,412 INFO L78 Accepts]: Start accepts. Automaton has 42045 states and 61617 transitions. Word has length 85 [2022-01-11 00:30:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:01,412 INFO L470 AbstractCegarLoop]: Abstraction has 42045 states and 61617 transitions. [2022-01-11 00:30:01,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 00:30:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand 42045 states and 61617 transitions. [2022-01-11 00:30:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 00:30:01,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:01,415 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] [2022-01-11 00:30:01,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 00:30:01,415 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:01,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:01,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1154536608, now seen corresponding path program 1 times [2022-01-11 00:30:01,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:01,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899605547] [2022-01-11 00:30:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:01,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:01,485 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 00:30:01,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899605547] [2022-01-11 00:30:01,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899605547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:01,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:01,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:01,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47879715] [2022-01-11 00:30:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:01,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:01,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:01,486 INFO L87 Difference]: Start difference. First operand 42045 states and 61617 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 00:30:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:04,228 INFO L93 Difference]: Finished difference Result 80645 states and 119205 transitions. [2022-01-11 00:30:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2022-01-11 00:30:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:04,316 INFO L225 Difference]: With dead ends: 80645 [2022-01-11 00:30:04,317 INFO L226 Difference]: Without dead ends: 52801 [2022-01-11 00:30:04,339 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 00:30:04,340 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 104 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:04,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 460 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52801 states. [2022-01-11 00:30:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52801 to 52799. [2022-01-11 00:30:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52799 states, 52798 states have (on average 1.4654911170877685) internal successors, (77375), 52798 states have internal predecessors, (77375), 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 00:30:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52799 states to 52799 states and 77375 transitions. [2022-01-11 00:30:07,549 INFO L78 Accepts]: Start accepts. Automaton has 52799 states and 77375 transitions. Word has length 86 [2022-01-11 00:30:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:07,549 INFO L470 AbstractCegarLoop]: Abstraction has 52799 states and 77375 transitions. [2022-01-11 00:30:07,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 00:30:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 52799 states and 77375 transitions. [2022-01-11 00:30:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 00:30:07,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:07,551 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] [2022-01-11 00:30:07,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 00:30:07,551 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1736496913, now seen corresponding path program 1 times [2022-01-11 00:30:07,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:07,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027959474] [2022-01-11 00:30:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:07,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:07,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:07,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027959474] [2022-01-11 00:30:07,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027959474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:07,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:07,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:07,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019291048] [2022-01-11 00:30:07,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:07,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:07,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:07,584 INFO L87 Difference]: Start difference. First operand 52799 states and 77375 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 00:30:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:11,022 INFO L93 Difference]: Finished difference Result 96888 states and 141894 transitions. [2022-01-11 00:30:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2022-01-11 00:30:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:11,131 INFO L225 Difference]: With dead ends: 96888 [2022-01-11 00:30:11,131 INFO L226 Difference]: Without dead ends: 67764 [2022-01-11 00:30:11,155 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 00:30:11,155 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 178 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:11,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 417 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:11,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67764 states. [2022-01-11 00:30:14,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67764 to 52799. [2022-01-11 00:30:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52799 states, 52798 states have (on average 1.4653964165309292) internal successors, (77370), 52798 states have internal predecessors, (77370), 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 00:30:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52799 states to 52799 states and 77370 transitions. [2022-01-11 00:30:14,264 INFO L78 Accepts]: Start accepts. Automaton has 52799 states and 77370 transitions. Word has length 86 [2022-01-11 00:30:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:14,264 INFO L470 AbstractCegarLoop]: Abstraction has 52799 states and 77370 transitions. [2022-01-11 00:30:14,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 00:30:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 52799 states and 77370 transitions. [2022-01-11 00:30:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 00:30:14,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:14,266 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] [2022-01-11 00:30:14,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 00:30:14,266 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1877365003, now seen corresponding path program 1 times [2022-01-11 00:30:14,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:14,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214462215] [2022-01-11 00:30:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:14,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:14,440 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 00:30:14,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:14,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214462215] [2022-01-11 00:30:14,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214462215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:14,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:14,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:30:14,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810571839] [2022-01-11 00:30:14,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:14,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:30:14,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:14,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:30:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:14,442 INFO L87 Difference]: Start difference. First operand 52799 states and 77370 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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)