/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.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:30:30,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:30:30,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:30:30,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:30:30,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:30:30,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:30:30,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:30:30,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:30:30,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:30:30,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:30:30,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:30:30,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:30:30,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:30:30,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:30:30,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:30:30,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:30:30,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:30:30,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:30:30,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:30:30,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:30:30,602 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 00:30:30,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:30:30,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:30:30,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:30:30,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:30:30,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:30:30,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:30:30,632 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:30:30,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:30:30,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:30:30,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:30:30,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:30:30,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:30:30,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:30:30,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:30:30,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:30:30,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:30:30,635 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:30:30,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:30:30,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:30:30,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:30:30,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:30:30,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:30:30,879 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:30:30,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-01-11 00:30:30,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56a8c409/80165416a4f249a2b6b2e03f772dd9d5/FLAG48884893c [2022-01-11 00:30:31,419 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:30:31,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-01-11 00:30:31,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56a8c409/80165416a4f249a2b6b2e03f772dd9d5/FLAG48884893c [2022-01-11 00:30:31,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56a8c409/80165416a4f249a2b6b2e03f772dd9d5 [2022-01-11 00:30:31,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:30:31,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:30:31,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:30:31,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:30:31,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:30:31,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:30:31" (1/1) ... [2022-01-11 00:30:31,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c3fce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:31, skipping insertion in model container [2022-01-11 00:30:31,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:30:31" (1/1) ... [2022-01-11 00:30:31,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:30:31,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:30:32,268 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.5.1.ufo.BOUNDED-10.pals.c[55771,55784] [2022-01-11 00:30:32,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:30:32,278 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:30:32,353 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.5.1.ufo.BOUNDED-10.pals.c[55771,55784] [2022-01-11 00:30:32,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:30:32,371 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:30:32,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32 WrapperNode [2022-01-11 00:30:32,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:30:32,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:30:32,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:30:32,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:30:32,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,450 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2059 [2022-01-11 00:30:32,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:30:32,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:30:32,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:30:32,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:30:32,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:30:32,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:30:32,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:30:32,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:30:32,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (1/1) ... [2022-01-11 00:30:32,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:30:32,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:30:32,576 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 00:30:32,593 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 00:30:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:30:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:30:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:30:32,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:30:32,785 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:30:32,786 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:30:33,880 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:30:33,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:30:33,896 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:30:33,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:30:33 BoogieIcfgContainer [2022-01-11 00:30:33,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:30:33,899 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:30:33,899 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:30:33,901 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:30:33,903 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:30:33" (1/1) ... [2022-01-11 00:30:34,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:30:34 BasicIcfg [2022-01-11 00:30:34,471 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:30:34,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:30:34,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:30:34,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:30:34,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:30:31" (1/4) ... [2022-01-11 00:30:34,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ac315a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:30:34, skipping insertion in model container [2022-01-11 00:30:34,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:30:32" (2/4) ... [2022-01-11 00:30:34,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ac315a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:30:34, skipping insertion in model container [2022-01-11 00:30:34,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:30:33" (3/4) ... [2022-01-11 00:30:34,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ac315a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:30:34, skipping insertion in model container [2022-01-11 00:30:34,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:30:34" (4/4) ... [2022-01-11 00:30:34,478 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.cTransformedIcfg [2022-01-11 00:30:34,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:30:34,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:30:34,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:30:34,530 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 00:30:34,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:30:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 714 states have (on average 1.8459383753501402) internal successors, (1318), 715 states have internal predecessors, (1318), 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 00:30:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-11 00:30:34,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:34,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:30:34,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:34,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1540089576, now seen corresponding path program 1 times [2022-01-11 00:30:34,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:34,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246713129] [2022-01-11 00:30:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:34,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:34,985 INFO 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 00:30:34,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:34,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246713129] [2022-01-11 00:30:34,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246713129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:34,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:34,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:30:34,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534281221] [2022-01-11 00:30:34,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:34,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:30:34,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:30:35,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:30:35,054 INFO L87 Difference]: Start difference. First operand has 716 states, 714 states have (on average 1.8459383753501402) internal successors, (1318), 715 states have internal predecessors, (1318), 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 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 00:30:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:35,103 INFO L93 Difference]: Finished difference Result 902 states and 1640 transitions. [2022-01-11 00:30:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:30:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-01-11 00:30:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:35,117 INFO L225 Difference]: With dead ends: 902 [2022-01-11 00:30:35,117 INFO L226 Difference]: Without dead ends: 712 [2022-01-11 00:30:35,120 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 00:30:35,122 INFO L933 BasicCegarLoop]: 1315 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, 1315 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 00:30:35,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-01-11 00:30:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2022-01-11 00:30:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.8438818565400843) internal successors, (1311), 711 states have internal predecessors, (1311), 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 00:30:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1311 transitions. [2022-01-11 00:30:35,188 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1311 transitions. Word has length 153 [2022-01-11 00:30:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:35,189 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1311 transitions. [2022-01-11 00:30:35,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 00:30:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1311 transitions. [2022-01-11 00:30:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-11 00:30:35,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:35,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:30:35,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:30:35,199 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:35,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1794826121, now seen corresponding path program 1 times [2022-01-11 00:30:35,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:35,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433255267] [2022-01-11 00:30:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:35,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:35,544 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 00:30:35,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433255267] [2022-01-11 00:30:35,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433255267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:35,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:35,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:30:35,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661168004] [2022-01-11 00:30:35,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:35,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:30:35,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:30:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:35,550 INFO L87 Difference]: Start difference. First operand 712 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 00:30:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:35,651 INFO L93 Difference]: Finished difference Result 897 states and 1630 transitions. [2022-01-11 00:30:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:30:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-01-11 00:30:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:35,658 INFO L225 Difference]: With dead ends: 897 [2022-01-11 00:30:35,659 INFO L226 Difference]: Without dead ends: 712 [2022-01-11 00:30:35,665 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 00:30:35,666 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 3 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5188 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:35,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5188 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-01-11 00:30:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2022-01-11 00:30:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.780590717299578) internal successors, (1266), 711 states have internal predecessors, (1266), 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 00:30:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1266 transitions. [2022-01-11 00:30:35,685 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1266 transitions. Word has length 153 [2022-01-11 00:30:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:35,686 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1266 transitions. [2022-01-11 00:30:35,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 00:30:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1266 transitions. [2022-01-11 00:30:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-11 00:30:35,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:35,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:35,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:30:35,688 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash -115844433, now seen corresponding path program 1 times [2022-01-11 00:30:35,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:35,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188656396] [2022-01-11 00:30:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:35,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:36,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:36,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188656396] [2022-01-11 00:30:36,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188656396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:36,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:36,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:36,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803336072] [2022-01-11 00:30:36,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:36,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:36,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:36,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:36,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:36,083 INFO L87 Difference]: Start difference. First operand 712 states and 1266 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 00:30:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:36,169 INFO L93 Difference]: Finished difference Result 1060 states and 1870 transitions. [2022-01-11 00:30:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 197 [2022-01-11 00:30:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:36,174 INFO L225 Difference]: With dead ends: 1060 [2022-01-11 00:30:36,174 INFO L226 Difference]: Without dead ends: 879 [2022-01-11 00:30:36,177 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 00:30:36,180 INFO L933 BasicCegarLoop]: 1265 mSDtfsCounter, 281 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:36,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2482 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-01-11 00:30:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2022-01-11 00:30:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.7682648401826484) internal successors, (1549), 876 states have internal predecessors, (1549), 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 00:30:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1549 transitions. [2022-01-11 00:30:36,203 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1549 transitions. Word has length 197 [2022-01-11 00:30:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:36,205 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1549 transitions. [2022-01-11 00:30:36,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 00:30:36,205 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1549 transitions. [2022-01-11 00:30:36,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-11 00:30:36,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:36,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:36,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:30:36,208 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash -864442921, now seen corresponding path program 1 times [2022-01-11 00:30:36,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:36,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117804953] [2022-01-11 00:30:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:36,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:36,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:36,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117804953] [2022-01-11 00:30:36,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117804953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:36,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:36,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:30:36,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760298380] [2022-01-11 00:30:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:36,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:30:36,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:30:36,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:30:36,400 INFO L87 Difference]: Start difference. First operand 877 states and 1549 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 00:30:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:36,518 INFO L93 Difference]: Finished difference Result 2534 states and 4468 transitions. [2022-01-11 00:30:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:30:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 201 [2022-01-11 00:30:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:36,525 INFO L225 Difference]: With dead ends: 2534 [2022-01-11 00:30:36,525 INFO L226 Difference]: Without dead ends: 1734 [2022-01-11 00:30:36,526 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 00:30:36,531 INFO L933 BasicCegarLoop]: 1236 mSDtfsCounter, 3558 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3558 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:36,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3558 Valid, 2457 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-01-11 00:30:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2022-01-11 00:30:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 1.7608318890814558) internal successors, (3048), 1731 states have internal predecessors, (3048), 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 00:30:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 3048 transitions. [2022-01-11 00:30:36,620 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 3048 transitions. Word has length 201 [2022-01-11 00:30:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:36,621 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 3048 transitions. [2022-01-11 00:30:36,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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 00:30:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 3048 transitions. [2022-01-11 00:30:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-11 00:30:36,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:36,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:36,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:30:36,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:36,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:36,626 INFO L85 PathProgramCache]: Analyzing trace with hash 596768128, now seen corresponding path program 1 times [2022-01-11 00:30:36,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:36,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643798401] [2022-01-11 00:30:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:36,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:30:36,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:36,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643798401] [2022-01-11 00:30:36,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643798401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:36,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:36,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:36,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492673215] [2022-01-11 00:30:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:36,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:36,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:36,820 INFO L87 Difference]: Start difference. First operand 1732 states and 3048 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 00:30:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:36,873 INFO L93 Difference]: Finished difference Result 2391 states and 4194 transitions. [2022-01-11 00:30:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:36,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 202 [2022-01-11 00:30:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:36,881 INFO L225 Difference]: With dead ends: 2391 [2022-01-11 00:30:36,881 INFO L226 Difference]: Without dead ends: 2035 [2022-01-11 00:30:36,882 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 00:30:36,882 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 290 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2732 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 00:30:36,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2732 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-01-11 00:30:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2033. [2022-01-11 00:30:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 1.7563976377952757) internal successors, (3569), 2032 states have internal predecessors, (3569), 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 00:30:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3569 transitions. [2022-01-11 00:30:36,942 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3569 transitions. Word has length 202 [2022-01-11 00:30:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:36,943 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3569 transitions. [2022-01-11 00:30:36,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 00:30:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3569 transitions. [2022-01-11 00:30:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-11 00:30:36,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:36,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:36,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:30:36,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:36,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash 783202539, now seen corresponding path program 1 times [2022-01-11 00:30:36,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:36,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559328595] [2022-01-11 00:30:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:36,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:37,141 INFO 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 00:30:37,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:37,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559328595] [2022-01-11 00:30:37,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559328595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:37,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:37,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:37,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418454526] [2022-01-11 00:30:37,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:37,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:37,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:37,143 INFO L87 Difference]: Start difference. First operand 2033 states and 3569 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 00:30:37,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:37,200 INFO L93 Difference]: Finished difference Result 3348 states and 5852 transitions. [2022-01-11 00:30:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:37,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 202 [2022-01-11 00:30:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:37,209 INFO L225 Difference]: With dead ends: 3348 [2022-01-11 00:30:37,209 INFO L226 Difference]: Without dead ends: 2369 [2022-01-11 00:30:37,211 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 00:30:37,212 INFO L933 BasicCegarLoop]: 1271 mSDtfsCounter, 301 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:37,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2505 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2022-01-11 00:30:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2349. [2022-01-11 00:30:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2348 states have (on average 1.75) internal successors, (4109), 2348 states have internal predecessors, (4109), 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 00:30:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 4109 transitions. [2022-01-11 00:30:37,265 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 4109 transitions. Word has length 202 [2022-01-11 00:30:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:37,265 INFO L470 AbstractCegarLoop]: Abstraction has 2349 states and 4109 transitions. [2022-01-11 00:30:37,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 00:30:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 4109 transitions. [2022-01-11 00:30:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-11 00:30:37,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:37,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:37,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:30:37,268 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1741006460, now seen corresponding path program 1 times [2022-01-11 00:30:37,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264600559] [2022-01-11 00:30:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:37,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:37,468 INFO 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 00:30:37,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:37,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264600559] [2022-01-11 00:30:37,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264600559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:37,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:37,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:30:37,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099244706] [2022-01-11 00:30:37,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:37,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:30:37,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:30:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:30:37,470 INFO L87 Difference]: Start difference. First operand 2349 states and 4109 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:37,665 INFO L93 Difference]: Finished difference Result 6989 states and 12226 transitions. [2022-01-11 00:30:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:30:37,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2022-01-11 00:30:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:37,679 INFO L225 Difference]: With dead ends: 6989 [2022-01-11 00:30:37,679 INFO L226 Difference]: Without dead ends: 4654 [2022-01-11 00:30:37,684 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 00:30:37,684 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 2469 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 3963 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:37,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2469 Valid, 3963 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2022-01-11 00:30:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4652. [2022-01-11 00:30:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4652 states, 4651 states have (on average 1.7422059772092022) internal successors, (8103), 4651 states have internal predecessors, (8103), 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 00:30:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 8103 transitions. [2022-01-11 00:30:37,816 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 8103 transitions. Word has length 203 [2022-01-11 00:30:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:37,816 INFO L470 AbstractCegarLoop]: Abstraction has 4652 states and 8103 transitions. [2022-01-11 00:30:37,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:30:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 8103 transitions. [2022-01-11 00:30:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-11 00:30:37,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:37,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:37,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:30:37,821 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:37,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1006831598, now seen corresponding path program 1 times [2022-01-11 00:30:37,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:37,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89490088] [2022-01-11 00:30:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:37,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:37,964 INFO 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 00:30:37,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:37,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89490088] [2022-01-11 00:30:37,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89490088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:37,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:37,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:30:37,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365737572] [2022-01-11 00:30:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:37,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:30:37,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:30:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:30:37,966 INFO L87 Difference]: Start difference. First operand 4652 states and 8103 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 00:30:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:38,275 INFO L93 Difference]: Finished difference Result 13725 states and 23899 transitions. [2022-01-11 00:30:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:30:38,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 206 [2022-01-11 00:30:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:38,319 INFO L225 Difference]: With dead ends: 13725 [2022-01-11 00:30:38,319 INFO L226 Difference]: Without dead ends: 9239 [2022-01-11 00:30:38,328 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 00:30:38,328 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 3239 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3239 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:38,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3239 Valid, 2773 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2022-01-11 00:30:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 9237. [2022-01-11 00:30:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9237 states, 9236 states have (on average 1.735708098744045) internal successors, (16031), 9236 states have internal predecessors, (16031), 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 00:30:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9237 states to 9237 states and 16031 transitions. [2022-01-11 00:30:38,699 INFO L78 Accepts]: Start accepts. Automaton has 9237 states and 16031 transitions. Word has length 206 [2022-01-11 00:30:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:38,701 INFO L470 AbstractCegarLoop]: Abstraction has 9237 states and 16031 transitions. [2022-01-11 00:30:38,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 00:30:38,702 INFO L276 IsEmpty]: Start isEmpty. Operand 9237 states and 16031 transitions. [2022-01-11 00:30:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-01-11 00:30:38,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:38,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:38,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:30:38,713 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1063110939, now seen corresponding path program 1 times [2022-01-11 00:30:38,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:38,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325366436] [2022-01-11 00:30:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:38,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:38,880 INFO 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 00:30:38,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:38,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325366436] [2022-01-11 00:30:38,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325366436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:38,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:38,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:30:38,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761032040] [2022-01-11 00:30:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:38,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:30:38,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:30:38,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:30:38,882 INFO L87 Difference]: Start difference. First operand 9237 states and 16031 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 00:30:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:39,487 INFO L93 Difference]: Finished difference Result 27340 states and 47445 transitions. [2022-01-11 00:30:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:30:39,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 208 [2022-01-11 00:30:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:39,523 INFO L225 Difference]: With dead ends: 27340 [2022-01-11 00:30:39,523 INFO L226 Difference]: Without dead ends: 18164 [2022-01-11 00:30:39,540 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 00:30:39,541 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 3209 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3209 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:39,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3209 Valid, 2762 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18164 states. [2022-01-11 00:30:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18164 to 18162. [2022-01-11 00:30:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18162 states, 18161 states have (on average 1.7273828533671054) internal successors, (31371), 18161 states have internal predecessors, (31371), 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 00:30:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 31371 transitions. [2022-01-11 00:30:40,212 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 31371 transitions. Word has length 208 [2022-01-11 00:30:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:40,213 INFO L470 AbstractCegarLoop]: Abstraction has 18162 states and 31371 transitions. [2022-01-11 00:30:40,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 00:30:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 31371 transitions. [2022-01-11 00:30:40,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-11 00:30:40,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:40,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:40,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:30:40,233 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:40,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1685621316, now seen corresponding path program 1 times [2022-01-11 00:30:40,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:40,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719658522] [2022-01-11 00:30:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:40,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:40,454 INFO 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 00:30:40,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:40,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719658522] [2022-01-11 00:30:40,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719658522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:40,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:40,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:40,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989112923] [2022-01-11 00:30:40,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:40,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:40,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:40,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:40,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:40,456 INFO L87 Difference]: Start difference. First operand 18162 states and 31371 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 00:30:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:41,184 INFO L93 Difference]: Finished difference Result 37299 states and 64081 transitions. [2022-01-11 00:30:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 210 [2022-01-11 00:30:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:41,247 INFO L225 Difference]: With dead ends: 37299 [2022-01-11 00:30:41,247 INFO L226 Difference]: Without dead ends: 27368 [2022-01-11 00:30:41,261 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 00:30:41,261 INFO L933 BasicCegarLoop]: 1277 mSDtfsCounter, 278 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:41,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2503 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27368 states. [2022-01-11 00:30:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27368 to 27366. [2022-01-11 00:30:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27366 states, 27365 states have (on average 1.7181070710761923) internal successors, (47016), 27365 states have internal predecessors, (47016), 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 00:30:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27366 states to 27366 states and 47016 transitions. [2022-01-11 00:30:42,230 INFO L78 Accepts]: Start accepts. Automaton has 27366 states and 47016 transitions. Word has length 210 [2022-01-11 00:30:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:42,230 INFO L470 AbstractCegarLoop]: Abstraction has 27366 states and 47016 transitions. [2022-01-11 00:30:42,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 00:30:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 27366 states and 47016 transitions. [2022-01-11 00:30:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-11 00:30:42,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:42,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:42,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:30:42,253 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1798410366, now seen corresponding path program 1 times [2022-01-11 00:30:42,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:42,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909030344] [2022-01-11 00:30:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:42,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:42,410 INFO 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 00:30:42,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:42,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909030344] [2022-01-11 00:30:42,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909030344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:42,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:42,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:42,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989118832] [2022-01-11 00:30:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:42,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:42,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:42,412 INFO L87 Difference]: Start difference. First operand 27366 states and 47016 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 00:30:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:43,692 INFO L93 Difference]: Finished difference Result 78868 states and 135236 transitions. [2022-01-11 00:30:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 214 [2022-01-11 00:30:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:43,788 INFO L225 Difference]: With dead ends: 78868 [2022-01-11 00:30:43,789 INFO L226 Difference]: Without dead ends: 53365 [2022-01-11 00:30:43,824 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 00:30:43,825 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 1030 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:43,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 3633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53365 states. [2022-01-11 00:30:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53365 to 53363. [2022-01-11 00:30:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53363 states, 53362 states have (on average 1.7093999475282036) internal successors, (91217), 53362 states have internal predecessors, (91217), 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 00:30:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53363 states to 53363 states and 91217 transitions. [2022-01-11 00:30:45,596 INFO L78 Accepts]: Start accepts. Automaton has 53363 states and 91217 transitions. Word has length 214 [2022-01-11 00:30:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:45,597 INFO L470 AbstractCegarLoop]: Abstraction has 53363 states and 91217 transitions. [2022-01-11 00:30:45,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 00:30:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 53363 states and 91217 transitions. [2022-01-11 00:30:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-11 00:30:45,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:45,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:45,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:30:45,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:45,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2007729352, now seen corresponding path program 1 times [2022-01-11 00:30:45,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:45,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621057556] [2022-01-11 00:30:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:45,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:45,828 INFO 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 00:30:45,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:45,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621057556] [2022-01-11 00:30:45,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621057556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:45,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:45,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:30:45,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882408725] [2022-01-11 00:30:45,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:45,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:30:45,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:30:45,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:30:45,830 INFO L87 Difference]: Start difference. First operand 53363 states and 91217 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 00:30:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:48,361 INFO L93 Difference]: Finished difference Result 157535 states and 269207 transitions. [2022-01-11 00:30:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:30:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 215 [2022-01-11 00:30:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:48,563 INFO L225 Difference]: With dead ends: 157535 [2022-01-11 00:30:48,564 INFO L226 Difference]: Without dead ends: 105339 [2022-01-11 00:30:48,611 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 00:30:48,612 INFO L933 BasicCegarLoop]: 1236 mSDtfsCounter, 3420 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3420 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:48,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3420 Valid, 2457 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:30:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105339 states. [2022-01-11 00:30:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105339 to 105337. [2022-01-11 00:30:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105337 states, 105336 states have (on average 1.7038904078377763) internal successors, (179481), 105336 states have internal predecessors, (179481), 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 00:30:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105337 states to 105337 states and 179481 transitions. [2022-01-11 00:30:51,973 INFO L78 Accepts]: Start accepts. Automaton has 105337 states and 179481 transitions. Word has length 215 [2022-01-11 00:30:51,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:30:51,974 INFO L470 AbstractCegarLoop]: Abstraction has 105337 states and 179481 transitions. [2022-01-11 00:30:51,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 00:30:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 105337 states and 179481 transitions. [2022-01-11 00:30:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-11 00:30:52,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:30:52,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:52,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:30:52,027 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:30:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:30:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 914138897, now seen corresponding path program 1 times [2022-01-11 00:30:52,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:30:52,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741775520] [2022-01-11 00:30:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:30:52,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:30:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:30:52,145 INFO 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 00:30:52,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:30:52,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741775520] [2022-01-11 00:30:52,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741775520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:30:52,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:30:52,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:30:52,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899961707] [2022-01-11 00:30:52,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:30:52,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:30:52,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:30:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:30:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:30:52,147 INFO L87 Difference]: Start difference. First operand 105337 states and 179481 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 00:30:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:30:55,494 INFO L93 Difference]: Finished difference Result 216579 states and 368577 transitions. [2022-01-11 00:30:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:30:55,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 216 [2022-01-11 00:30:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:30:55,729 INFO L225 Difference]: With dead ends: 216579 [2022-01-11 00:30:55,730 INFO L226 Difference]: Without dead ends: 141873 [2022-01-11 00:30:55,773 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 00:30:55,774 INFO L933 BasicCegarLoop]: 1475 mSDtfsCounter, 287 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:30:55,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2710 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:30:55,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141873 states. [2022-01-11 00:30:59,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141873 to 139727. [2022-01-11 00:30:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139727 states, 139726 states have (on average 1.692934743712695) internal successors, (236547), 139726 states have internal predecessors, (236547), 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 00:31:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139727 states to 139727 states and 236547 transitions. [2022-01-11 00:31:00,043 INFO L78 Accepts]: Start accepts. Automaton has 139727 states and 236547 transitions. Word has length 216 [2022-01-11 00:31:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:31:00,044 INFO L470 AbstractCegarLoop]: Abstraction has 139727 states and 236547 transitions. [2022-01-11 00:31:00,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 00:31:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 139727 states and 236547 transitions. [2022-01-11 00:31:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-11 00:31:00,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:31:00,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:00,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:31:00,105 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:31:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:31:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash 303583269, now seen corresponding path program 1 times [2022-01-11 00:31:00,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:31:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895415395] [2022-01-11 00:31:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:31:00,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:31:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:31:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:31:00,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:31:00,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895415395] [2022-01-11 00:31:00,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895415395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:31:00,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:31:00,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:31:00,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246903871] [2022-01-11 00:31:00,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:31:00,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:31:00,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:31:00,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:31:00,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:31:00,265 INFO L87 Difference]: Start difference. First operand 139727 states and 236547 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 00:31:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:31:03,747 INFO L93 Difference]: Finished difference Result 245941 states and 416147 transitions. [2022-01-11 00:31:03,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:31:03,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 216 [2022-01-11 00:31:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:31:04,062 INFO L225 Difference]: With dead ends: 245941 [2022-01-11 00:31:04,063 INFO L226 Difference]: Without dead ends: 172747 [2022-01-11 00:31:04,121 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 00:31:04,122 INFO L933 BasicCegarLoop]: 1496 mSDtfsCounter, 279 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2713 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 00:31:04,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2713 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:31:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172747 states. [2022-01-11 00:31:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172747 to 172745. [2022-01-11 00:31:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172745 states, 172744 states have (on average 1.6903220951234197) internal successors, (291993), 172744 states have internal predecessors, (291993), 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 00:31:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172745 states to 172745 states and 291993 transitions. [2022-01-11 00:31:09,364 INFO L78 Accepts]: Start accepts. Automaton has 172745 states and 291993 transitions. Word has length 216 [2022-01-11 00:31:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:31:09,365 INFO L470 AbstractCegarLoop]: Abstraction has 172745 states and 291993 transitions. [2022-01-11 00:31:09,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 00:31:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 172745 states and 291993 transitions. [2022-01-11 00:31:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-11 00:31:09,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:31:09,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:09,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:31:09,408 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:31:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:31:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 713234545, now seen corresponding path program 1 times [2022-01-11 00:31:09,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:31:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065998316] [2022-01-11 00:31:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:31:09,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:31:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:31:09,536 INFO 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 00:31:09,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:31:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065998316] [2022-01-11 00:31:09,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065998316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:31:09,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:31:09,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:31:09,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627389436] [2022-01-11 00:31:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:31:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:31:09,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:31:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:31:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:31:09,538 INFO L87 Difference]: Start difference. First operand 172745 states and 291993 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:31:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:31:16,858 INFO L93 Difference]: Finished difference Result 509877 states and 861360 transitions. [2022-01-11 00:31:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:31:16,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-01-11 00:31:16,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:31:17,557 INFO L225 Difference]: With dead ends: 509877 [2022-01-11 00:31:17,557 INFO L226 Difference]: Without dead ends: 341543 [2022-01-11 00:31:17,672 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 00:31:17,672 INFO L933 BasicCegarLoop]: 2425 mSDtfsCounter, 1013 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:31:17,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 3660 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:31:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341543 states. [2022-01-11 00:31:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341543 to 341541. [2022-01-11 00:31:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341541 states, 341540 states have (on average 1.683808631492651) internal successors, (575088), 341540 states have internal predecessors, (575088), 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 00:31:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341541 states to 341541 states and 575088 transitions. [2022-01-11 00:31:27,448 INFO L78 Accepts]: Start accepts. Automaton has 341541 states and 575088 transitions. Word has length 217 [2022-01-11 00:31:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:31:27,448 INFO L470 AbstractCegarLoop]: Abstraction has 341541 states and 575088 transitions. [2022-01-11 00:31:27,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:31:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 341541 states and 575088 transitions. [2022-01-11 00:31:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-11 00:31:27,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:31:27,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:27,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:31:27,918 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:31:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:31:27,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1284167630, now seen corresponding path program 1 times [2022-01-11 00:31:27,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:31:27,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235961712] [2022-01-11 00:31:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:31:27,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:31:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:31:28,064 INFO 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 00:31:28,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:31:28,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235961712] [2022-01-11 00:31:28,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235961712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:31:28,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:31:28,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:31:28,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107718583] [2022-01-11 00:31:28,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:31:28,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:31:28,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:31:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:31:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:31:28,067 INFO L87 Difference]: Start difference. First operand 341541 states and 575088 transitions. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 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)