/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:57:56,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:57:56,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:57:56,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 02:57:56,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:57:56,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:57:56,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:57:56,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:57:56,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:57:56,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:57:56,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:57:56,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:57:56,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:57:56,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:57:56,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:57:56,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:57:56,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:57:56,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:57:56,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:57:56,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:57:56,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:57:56,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:57:56,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:57:56,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:57:56,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:57:56,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:57:56,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:57:56,755 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:57:56,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:57:56,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:57:56,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:57:56,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:57:56,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:57:56,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:57:56,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:57:56,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:57:56,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:57:56,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:57:56,758 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:57:56,758 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:57:56,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:57:56,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:57:56,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:57:56,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:57:56,928 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:57:56,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2022-01-11 02:57:56,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9268996b8/4b981d498d0e406ebefe777fbe4b216c/FLAG25083af0c [2022-01-11 02:57:57,314 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:57:57,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2022-01-11 02:57:57,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9268996b8/4b981d498d0e406ebefe777fbe4b216c/FLAG25083af0c [2022-01-11 02:57:57,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9268996b8/4b981d498d0e406ebefe777fbe4b216c [2022-01-11 02:57:57,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:57:57,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:57:57,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:57:57,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:57:57,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:57:57,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613a17a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57, skipping insertion in model container [2022-01-11 02:57:57,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:57:57,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:57:57,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel-2.i[852,865] [2022-01-11 02:57:57,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:57:57,479 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:57:57,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel-2.i[852,865] [2022-01-11 02:57:57,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:57:57,507 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:57:57,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57 WrapperNode [2022-01-11 02:57:57,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:57:57,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:57:57,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:57:57,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:57:57,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,526 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-01-11 02:57:57,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:57:57,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:57:57,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:57:57,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:57:57,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:57:57,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:57:57,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:57:57,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:57:57,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:57:57,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:57,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:57:57,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:57:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:57:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:57:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 02:57:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 02:57:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:57:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:57:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 02:57:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 02:57:57,637 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:57:57,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:57:57,774 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:57:57,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:57:57,778 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:57:57,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:57 BoogieIcfgContainer [2022-01-11 02:57:57,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:57:57,779 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:57:57,780 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:57:57,781 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:57:57,782 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:57" (1/1) ... [2022-01-11 02:57:57,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:57:57 BasicIcfg [2022-01-11 02:57:57,832 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:57:57,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:57:57,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:57:57,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:57:57,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:57:57" (1/4) ... [2022-01-11 02:57:57,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270ffeb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:57:57, skipping insertion in model container [2022-01-11 02:57:57,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:57" (2/4) ... [2022-01-11 02:57:57,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270ffeb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:57:57, skipping insertion in model container [2022-01-11 02:57:57,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:57" (3/4) ... [2022-01-11 02:57:57,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270ffeb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:57:57, skipping insertion in model container [2022-01-11 02:57:57,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:57:57" (4/4) ... [2022-01-11 02:57:57,836 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_sentinel-2.iTransformedIcfg [2022-01-11 02:57:57,840 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:57:57,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 02:57:57,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:57:57,888 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:57:57,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 02:57:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-11 02:57:57,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:57,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:57,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1006938069, now seen corresponding path program 1 times [2022-01-11 02:57:57,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:57,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035666399] [2022-01-11 02:57:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:57,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:58,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:58,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035666399] [2022-01-11 02:57:58,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035666399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:58,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:58,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:57:58,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124115968] [2022-01-11 02:57:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:58,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:57:58,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:58,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:57:58,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:57:58,092 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:58,102 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-01-11 02:57:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:57:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-01-11 02:57:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:58,109 INFO L225 Difference]: With dead ends: 28 [2022-01-11 02:57:58,109 INFO L226 Difference]: Without dead ends: 11 [2022-01-11 02:57:58,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:57:58,113 INFO L933 BasicCegarLoop]: 18 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, 18 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:58,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-11 02:57:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-11 02:57:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-01-11 02:57:58,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-01-11 02:57:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:58,138 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-01-11 02:57:58,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-01-11 02:57:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:57:58,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:58,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:58,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:57:58,141 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash -261855943, now seen corresponding path program 1 times [2022-01-11 02:57:58,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:58,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505963533] [2022-01-11 02:57:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:58,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:58,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:58,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505963533] [2022-01-11 02:57:58,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505963533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:58,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:58,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:57:58,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200431130] [2022-01-11 02:57:58,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:58,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:57:58,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:58,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:57:58,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:57:58,263 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:58,280 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-01-11 02:57:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:57:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-01-11 02:57:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:58,281 INFO L225 Difference]: With dead ends: 20 [2022-01-11 02:57:58,281 INFO L226 Difference]: Without dead ends: 13 [2022-01-11 02:57:58,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:57:58,286 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:58,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:58,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-11 02:57:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-01-11 02:57:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-01-11 02:57:58,293 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2022-01-11 02:57:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:58,294 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-01-11 02:57:58,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,296 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-01-11 02:57:58,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:57:58,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:58,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:58,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:57:58,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2089691754, now seen corresponding path program 1 times [2022-01-11 02:57:58,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573133567] [2022-01-11 02:57:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:58,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:58,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573133567] [2022-01-11 02:57:58,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573133567] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098543434] [2022-01-11 02:57:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:58,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:58,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:58,409 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) [2022-01-11 02:57:58,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:57:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:58,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 02:57:58,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:57:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:57:58,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:57:58,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098543434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:58,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:57:58,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-01-11 02:57:58,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279084465] [2022-01-11 02:57:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:58,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:57:58,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:57:58,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:57:58,699 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:58,740 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-01-11 02:57:58,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:57:58,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-01-11 02:57:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:58,742 INFO L225 Difference]: With dead ends: 18 [2022-01-11 02:57:58,742 INFO L226 Difference]: Without dead ends: 14 [2022-01-11 02:57:58,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:57:58,743 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:58,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-11 02:57:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-01-11 02:57:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-01-11 02:57:58,750 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-01-11 02:57:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:58,750 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-01-11 02:57:58,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-01-11 02:57:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:57:58,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:58,751 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:58,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:57:58,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:58,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1877607026, now seen corresponding path program 1 times [2022-01-11 02:57:58,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:58,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488093864] [2022-01-11 02:57:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:58,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:57:59,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:59,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488093864] [2022-01-11 02:57:59,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488093864] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:59,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938728406] [2022-01-11 02:57:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:59,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:59,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:57:59,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:57:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:59,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 02:57:59,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:57:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:57:59,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:57:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:57:59,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938728406] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:57:59,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:57:59,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-11 02:57:59,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678569101] [2022-01-11 02:57:59,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:57:59,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 02:57:59,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 02:57:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:57:59,239 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:59,292 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-11 02:57:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 02:57:59,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 13 [2022-01-11 02:57:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:59,293 INFO L225 Difference]: With dead ends: 29 [2022-01-11 02:57:59,293 INFO L226 Difference]: Without dead ends: 20 [2022-01-11 02:57:59,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:57:59,294 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:59,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-11 02:57:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-11 02:57:59,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-11 02:57:59,297 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2022-01-11 02:57:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:59,297 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-11 02:57:59,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-11 02:57:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 02:57:59,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:59,298 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:59,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:57:59,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-11 02:57:59,498 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:59,499 INFO L85 PathProgramCache]: Analyzing trace with hash 775206473, now seen corresponding path program 2 times [2022-01-11 02:57:59,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:59,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325971583] [2022-01-11 02:57:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:59,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:57:59,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:59,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325971583] [2022-01-11 02:57:59,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325971583] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:59,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283774683] [2022-01-11 02:57:59,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:57:59,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:59,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:57:59,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:57:59,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:57:59,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:57:59,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-11 02:57:59,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:57:59,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-11 02:57:59,984 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 02:57:59,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-01-11 02:58:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 02:58:04,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:58:04,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 74 [2022-01-11 02:58:04,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 144 [2022-01-11 02:58:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-11 02:58:31,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283774683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:58:31,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:58:31,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 17 [2022-01-11 02:58:31,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464197178] [2022-01-11 02:58:31,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:58:31,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-11 02:58:31,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:58:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-11 02:58:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-01-11 02:58:31,369 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:58:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:58:32,029 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-01-11 02:58:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 02:58:32,030 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 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 19 [2022-01-11 02:58:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:58:32,030 INFO L225 Difference]: With dead ends: 39 [2022-01-11 02:58:32,030 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 02:58:32,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-01-11 02:58:32,031 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:58:32,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 18 Unchecked, 0.2s Time] [2022-01-11 02:58:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 02:58:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-01-11 02:58:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:58:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-01-11 02:58:32,036 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2022-01-11 02:58:32,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:58:32,037 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-01-11 02:58:32,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:58:32,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-01-11 02:58:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 02:58:32,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:58:32,037 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:58:32,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:58:32,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:58:32,242 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:58:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:58:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1387708702, now seen corresponding path program 3 times [2022-01-11 02:58:32,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:58:32,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348697775] [2022-01-11 02:58:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:58:32,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:58:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:58:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 02:58:32,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:58:32,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348697775] [2022-01-11 02:58:32,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348697775] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:58:32,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629631746] [2022-01-11 02:58:32,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:58:32,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:58:32,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:58:32,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:58:32,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:58:32,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-11 02:58:32,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:58:32,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-11 02:58:32,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:58:32,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-11 02:58:33,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:58:33,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:58:33,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:58:33,985 INFO L353 Elim1Store]: treesize reduction 8, result has 93.4 percent of original size [2022-01-11 02:58:33,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 127