/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:34:32,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:34:32,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:34:32,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 18:34:32,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:34:32,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:34:32,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:34:32,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:34:32,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:34:32,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:34:32,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:34:32,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:34:32,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:34:32,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:34:32,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:34:32,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:34:32,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:34:32,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:34:32,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:34:32,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:34:32,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:34:32,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:34:32,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:34:32,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:34:32,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:34:32,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:34:32,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:34:32,606 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:34:32,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:34:32,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:34:32,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:34:32,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:34:32,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:34:32,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:34:32,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:34:32,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:34:32,609 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:34:32,609 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:34:32,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:34:32,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:34:32,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:34:32,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:34:32,839 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:34:32,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2022-01-10 18:34:32,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652585ed9/467c8ab1d8b045b390af1ddee31ddaf7/FLAG95ed2bd1c [2022-01-10 18:34:33,287 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:34:33,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2022-01-10 18:34:33,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652585ed9/467c8ab1d8b045b390af1ddee31ddaf7/FLAG95ed2bd1c [2022-01-10 18:34:33,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652585ed9/467c8ab1d8b045b390af1ddee31ddaf7 [2022-01-10 18:34:33,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:34:33,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:34:33,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:34:33,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:34:33,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:34:33,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa05b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33, skipping insertion in model container [2022-01-10 18:34:33,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:34:33,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:34:33,600 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_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2022-01-10 18:34:33,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:34:33,608 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:34:33,649 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_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2022-01-10 18:34:33,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:34:33,671 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:34:33,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33 WrapperNode [2022-01-10 18:34:33,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:34:33,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:34:33,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:34:33,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:34:33,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,712 INFO L137 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 306 [2022-01-10 18:34:33,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:34:33,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:34:33,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:34:33,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:34:33,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:34:33,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:34:33,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:34:33,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:34:33,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (1/1) ... [2022-01-10 18:34:33,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:34:33,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:34:33,790 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) [2022-01-10 18:34:33,792 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 [2022-01-10 18:34:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:34:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:34:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:34:33,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:34:33,901 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:34:33,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:34:34,175 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:34:34,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:34:34,180 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:34:34,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:34 BoogieIcfgContainer [2022-01-10 18:34:34,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:34:34,183 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:34:34,183 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:34:34,184 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:34:34,186 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:34" (1/1) ... [2022-01-10 18:34:34,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:34:34 BasicIcfg [2022-01-10 18:34:34,415 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:34:34,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:34:34,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:34:34,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:34:34,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:34:33" (1/4) ... [2022-01-10 18:34:34,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a7316e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:34:34, skipping insertion in model container [2022-01-10 18:34:34,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:33" (2/4) ... [2022-01-10 18:34:34,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a7316e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:34:34, skipping insertion in model container [2022-01-10 18:34:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:34" (3/4) ... [2022-01-10 18:34:34,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a7316e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:34:34, skipping insertion in model container [2022-01-10 18:34:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:34:34" (4/4) ... [2022-01-10 18:34:34,422 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-10 18:34:34,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:34:34,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:34:34,462 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:34:34,468 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 [2022-01-10 18:34:34,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:34:34,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 100 states have (on average 1.69) internal successors, (169), 101 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 18:34:34,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:34,486 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] [2022-01-10 18:34:34,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:34,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2012688137, now seen corresponding path program 1 times [2022-01-10 18:34:34,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:34,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985395638] [2022-01-10 18:34:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:34,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:34,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:34,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985395638] [2022-01-10 18:34:34,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985395638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:34,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:34,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:34:34,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339739023] [2022-01-10 18:34:34,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:34,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:34:34,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:34,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:34:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:34:34,742 INFO L87 Difference]: Start difference. First operand has 102 states, 100 states have (on average 1.69) internal successors, (169), 101 states have internal predecessors, (169), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:34,769 INFO L93 Difference]: Finished difference Result 171 states and 281 transitions. [2022-01-10 18:34:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:34:34,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 18:34:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:34,776 INFO L225 Difference]: With dead ends: 171 [2022-01-10 18:34:34,798 INFO L226 Difference]: Without dead ends: 98 [2022-01-10 18:34:34,801 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 [2022-01-10 18:34:34,803 INFO L933 BasicCegarLoop]: 162 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, 162 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 [2022-01-10 18:34:34,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-10 18:34:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-01-10 18:34:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.6701030927835052) internal successors, (162), 97 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 162 transitions. [2022-01-10 18:34:34,828 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 162 transitions. Word has length 30 [2022-01-10 18:34:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:34,828 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 162 transitions. [2022-01-10 18:34:34,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 162 transitions. [2022-01-10 18:34:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 18:34:34,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:34,830 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] [2022-01-10 18:34:34,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:34:34,830 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:34,830 INFO L85 PathProgramCache]: Analyzing trace with hash 205069816, now seen corresponding path program 1 times [2022-01-10 18:34:34,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:34,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334008879] [2022-01-10 18:34:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:34,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:34,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:34,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334008879] [2022-01-10 18:34:34,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334008879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:34,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:34,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:34:34,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738306865] [2022-01-10 18:34:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:34,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:34:34,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:34:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:34:34,949 INFO L87 Difference]: Start difference. First operand 98 states and 162 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:35,002 INFO L93 Difference]: Finished difference Result 170 states and 274 transitions. [2022-01-10 18:34:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:34:35,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 18:34:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:35,004 INFO L225 Difference]: With dead ends: 170 [2022-01-10 18:34:35,004 INFO L226 Difference]: Without dead ends: 98 [2022-01-10 18:34:35,004 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 [2022-01-10 18:34:35,005 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 3 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:35,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 613 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:35,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-10 18:34:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-01-10 18:34:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.422680412371134) internal successors, (138), 97 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 138 transitions. [2022-01-10 18:34:35,011 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 138 transitions. Word has length 30 [2022-01-10 18:34:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:35,011 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 138 transitions. [2022-01-10 18:34:35,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 138 transitions. [2022-01-10 18:34:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:34:35,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:35,012 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] [2022-01-10 18:34:35,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:34:35,013 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2099591258, now seen corresponding path program 1 times [2022-01-10 18:34:35,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:35,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899637338] [2022-01-10 18:34:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:35,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:35,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:35,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899637338] [2022-01-10 18:34:35,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899637338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:35,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:35,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:35,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809946480] [2022-01-10 18:34:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:35,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:35,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:35,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:35,172 INFO L87 Difference]: Start difference. First operand 98 states and 138 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:35,192 INFO L93 Difference]: Finished difference Result 222 states and 334 transitions. [2022-01-10 18:34:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:35,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 18:34:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:35,194 INFO L225 Difference]: With dead ends: 222 [2022-01-10 18:34:35,194 INFO L226 Difference]: Without dead ends: 154 [2022-01-10 18:34:35,195 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 [2022-01-10 18:34:35,195 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 91 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 299 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 [2022-01-10 18:34:35,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 299 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-10 18:34:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2022-01-10 18:34:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.4834437086092715) internal successors, (224), 151 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2022-01-10 18:34:35,206 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 53 [2022-01-10 18:34:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:35,206 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2022-01-10 18:34:35,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2022-01-10 18:34:35,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:34:35,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:35,208 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] [2022-01-10 18:34:35,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:34:35,208 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:35,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1570425159, now seen corresponding path program 1 times [2022-01-10 18:34:35,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:35,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104494240] [2022-01-10 18:34:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:35,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:35,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104494240] [2022-01-10 18:34:35,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104494240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:35,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:35,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:35,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740072785] [2022-01-10 18:34:35,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:35,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:35,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:35,352 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:35,374 INFO L93 Difference]: Finished difference Result 372 states and 572 transitions. [2022-01-10 18:34:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 18:34:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:35,379 INFO L225 Difference]: With dead ends: 372 [2022-01-10 18:34:35,379 INFO L226 Difference]: Without dead ends: 250 [2022-01-10 18:34:35,381 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 [2022-01-10 18:34:35,387 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 86 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 290 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 [2022-01-10 18:34:35,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 290 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-10 18:34:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2022-01-10 18:34:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.5182186234817814) internal successors, (375), 247 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 375 transitions. [2022-01-10 18:34:35,398 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 375 transitions. Word has length 54 [2022-01-10 18:34:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:35,398 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 375 transitions. [2022-01-10 18:34:35,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 375 transitions. [2022-01-10 18:34:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 18:34:35,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:35,400 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] [2022-01-10 18:34:35,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:34:35,400 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1304330171, now seen corresponding path program 1 times [2022-01-10 18:34:35,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:35,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917645340] [2022-01-10 18:34:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:35,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:35,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:35,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917645340] [2022-01-10 18:34:35,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917645340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:35,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:35,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:35,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175006390] [2022-01-10 18:34:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:35,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:35,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:35,506 INFO L87 Difference]: Start difference. First operand 248 states and 375 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:35,527 INFO L93 Difference]: Finished difference Result 636 states and 985 transitions. [2022-01-10 18:34:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:35,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 18:34:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:35,529 INFO L225 Difference]: With dead ends: 636 [2022-01-10 18:34:35,529 INFO L226 Difference]: Without dead ends: 418 [2022-01-10 18:34:35,530 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 [2022-01-10 18:34:35,530 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 81 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 281 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 [2022-01-10 18:34:35,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-10 18:34:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 416. [2022-01-10 18:34:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.5301204819277108) internal successors, (635), 415 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 635 transitions. [2022-01-10 18:34:35,593 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 635 transitions. Word has length 55 [2022-01-10 18:34:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:35,594 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 635 transitions. [2022-01-10 18:34:35,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 635 transitions. [2022-01-10 18:34:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:34:35,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:35,595 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] [2022-01-10 18:34:35,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:34:35,595 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash 345261318, now seen corresponding path program 1 times [2022-01-10 18:34:35,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:35,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755496029] [2022-01-10 18:34:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:35,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:35,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:35,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755496029] [2022-01-10 18:34:35,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755496029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:35,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:35,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:34:35,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716057784] [2022-01-10 18:34:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:35,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:34:35,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:34:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:34:35,788 INFO L87 Difference]: Start difference. First operand 416 states and 635 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:36,119 INFO L93 Difference]: Finished difference Result 2776 states and 4304 transitions. [2022-01-10 18:34:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:34:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 18:34:36,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:36,127 INFO L225 Difference]: With dead ends: 2776 [2022-01-10 18:34:36,127 INFO L226 Difference]: Without dead ends: 2390 [2022-01-10 18:34:36,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 18:34:36,128 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 736 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:36,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [736 Valid, 967 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:34:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-01-10 18:34:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1460. [2022-01-10 18:34:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 1.5455791638108294) internal successors, (2255), 1459 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2255 transitions. [2022-01-10 18:34:36,233 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2255 transitions. Word has length 56 [2022-01-10 18:34:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:36,234 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 2255 transitions. [2022-01-10 18:34:36,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2255 transitions. [2022-01-10 18:34:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:34:36,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:36,238 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] [2022-01-10 18:34:36,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:34:36,238 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1280215722, now seen corresponding path program 1 times [2022-01-10 18:34:36,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:36,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395488303] [2022-01-10 18:34:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:36,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:36,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:36,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395488303] [2022-01-10 18:34:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395488303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:36,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:36,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:36,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946006746] [2022-01-10 18:34:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:36,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:36,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:36,319 INFO L87 Difference]: Start difference. First operand 1460 states and 2255 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:36,429 INFO L93 Difference]: Finished difference Result 3896 states and 6009 transitions. [2022-01-10 18:34:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 18:34:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:36,436 INFO L225 Difference]: With dead ends: 3896 [2022-01-10 18:34:36,437 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 18:34:36,438 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 [2022-01-10 18:34:36,439 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 93 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 318 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 [2022-01-10 18:34:36,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 318 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 18:34:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2464. [2022-01-10 18:34:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 1.5229395046691028) internal successors, (3751), 2463 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3751 transitions. [2022-01-10 18:34:36,572 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3751 transitions. Word has length 57 [2022-01-10 18:34:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:36,572 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 3751 transitions. [2022-01-10 18:34:36,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3751 transitions. [2022-01-10 18:34:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:34:36,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:36,573 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] [2022-01-10 18:34:36,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:34:36,573 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:36,574 INFO L85 PathProgramCache]: Analyzing trace with hash -65078576, now seen corresponding path program 1 times [2022-01-10 18:34:36,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:36,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078287490] [2022-01-10 18:34:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:36,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:36,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:36,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078287490] [2022-01-10 18:34:36,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078287490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:36,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:36,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:34:36,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414269270] [2022-01-10 18:34:36,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:36,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:34:36,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:34:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:34:36,762 INFO L87 Difference]: Start difference. First operand 2464 states and 3751 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:38,045 INFO L93 Difference]: Finished difference Result 12834 states and 19596 transitions. [2022-01-10 18:34:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:34:38,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 18:34:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:38,083 INFO L225 Difference]: With dead ends: 12834 [2022-01-10 18:34:38,083 INFO L226 Difference]: Without dead ends: 10400 [2022-01-10 18:34:38,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:34:38,089 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 772 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:38,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 906 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:34:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10400 states. [2022-01-10 18:34:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10400 to 4896. [2022-01-10 18:34:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 4895 states have (on average 1.5001021450459653) internal successors, (7343), 4895 states have internal predecessors, (7343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 7343 transitions. [2022-01-10 18:34:38,749 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 7343 transitions. Word has length 57 [2022-01-10 18:34:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:38,750 INFO L470 AbstractCegarLoop]: Abstraction has 4896 states and 7343 transitions. [2022-01-10 18:34:38,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 7343 transitions. [2022-01-10 18:34:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:34:38,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:38,751 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] [2022-01-10 18:34:38,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:34:38,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2048001837, now seen corresponding path program 1 times [2022-01-10 18:34:38,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:38,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286963678] [2022-01-10 18:34:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:38,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:38,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286963678] [2022-01-10 18:34:38,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286963678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:38,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:38,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:34:38,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688695842] [2022-01-10 18:34:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:38,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:34:38,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:34:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:34:38,823 INFO L87 Difference]: Start difference. First operand 4896 states and 7343 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:40,023 INFO L93 Difference]: Finished difference Result 9494 states and 14170 transitions. [2022-01-10 18:34:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:34:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 18:34:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:40,052 INFO L225 Difference]: With dead ends: 9494 [2022-01-10 18:34:40,052 INFO L226 Difference]: Without dead ends: 9492 [2022-01-10 18:34:40,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:34:40,056 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 400 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:40,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 658 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:40,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2022-01-10 18:34:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 5280. [2022-01-10 18:34:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5279 states have (on average 1.4637241901875355) internal successors, (7727), 5279 states have internal predecessors, (7727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 7727 transitions. [2022-01-10 18:34:40,759 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 7727 transitions. Word has length 58 [2022-01-10 18:34:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:40,760 INFO L470 AbstractCegarLoop]: Abstraction has 5280 states and 7727 transitions. [2022-01-10 18:34:40,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 7727 transitions. [2022-01-10 18:34:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:34:40,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:40,761 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] [2022-01-10 18:34:40,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:34:40,761 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 966838898, now seen corresponding path program 1 times [2022-01-10 18:34:40,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:40,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686419696] [2022-01-10 18:34:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:40,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:34:40,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:40,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686419696] [2022-01-10 18:34:40,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686419696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:34:40,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:34:40,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:34:40,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807976762] [2022-01-10 18:34:40,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:34:40,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:34:40,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:34:40,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:34:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:34:40,822 INFO L87 Difference]: Start difference. First operand 5280 states and 7727 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:34:41,695 INFO L93 Difference]: Finished difference Result 13102 states and 19203 transitions. [2022-01-10 18:34:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:34:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 18:34:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:34:41,707 INFO L225 Difference]: With dead ends: 13102 [2022-01-10 18:34:41,707 INFO L226 Difference]: Without dead ends: 7852 [2022-01-10 18:34:41,713 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 [2022-01-10 18:34:41,713 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 71 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:34:41,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 240 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:34:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2022-01-10 18:34:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 7786. [2022-01-10 18:34:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7786 states, 7785 states have (on average 1.453179190751445) internal successors, (11313), 7785 states have internal predecessors, (11313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7786 states to 7786 states and 11313 transitions. [2022-01-10 18:34:42,735 INFO L78 Accepts]: Start accepts. Automaton has 7786 states and 11313 transitions. Word has length 59 [2022-01-10 18:34:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:34:42,736 INFO L470 AbstractCegarLoop]: Abstraction has 7786 states and 11313 transitions. [2022-01-10 18:34:42,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:34:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7786 states and 11313 transitions. [2022-01-10 18:34:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 18:34:42,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:34:42,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:34:42,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:34:42,741 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:34:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:34:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1115101052, now seen corresponding path program 1 times [2022-01-10 18:34:42,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:34:42,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205207388] [2022-01-10 18:34:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:42,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:34:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:34:42,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:34:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205207388] [2022-01-10 18:34:42,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205207388] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:34:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499777166] [2022-01-10 18:34:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:34:42,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:34:42,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:34:42,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:34:42,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:34:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:34:43,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 18:34:43,297 INFO L286 TraceCheckSpWp]: Computing forward predicates...