/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/loop-acceleration/array_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:59:35,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:59:35,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:59:35,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 01:59:35,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:59:35,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:59:35,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:59:35,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:59:35,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:59:35,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:59:35,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:59:35,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:59:35,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:59:35,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:59:35,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:59:35,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:59:35,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 01:59:35,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:59:35,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:59:35,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:59:35,933 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 01:59:35,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:59:35,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:59:35,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:59:35,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:59:35,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:59:35,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:59:35,964 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:59:35,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:59:35,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:59:35,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:59:35,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:59:35,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:59:35,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:59:35,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:59:35,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:59:35,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:59:35,968 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:59:35,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:59:36,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:59:36,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:59:36,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:59:36,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:59:36,175 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:59:36,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_1-1.c [2022-01-11 01:59:36,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2127070/14874ca7c20a4288b625307beb3504bb/FLAG718006686 [2022-01-11 01:59:36,531 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:59:36,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-1.c [2022-01-11 01:59:36,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2127070/14874ca7c20a4288b625307beb3504bb/FLAG718006686 [2022-01-11 01:59:36,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2127070/14874ca7c20a4288b625307beb3504bb [2022-01-11 01:59:36,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:59:36,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:59:36,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:59:36,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:59:36,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:59:36,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:59:36" (1/1) ... [2022-01-11 01:59:36,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f2a7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:36, skipping insertion in model container [2022-01-11 01:59:36,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:59:36" (1/1) ... [2022-01-11 01:59:36,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:59:37,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:59:37,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-1.c[321,334] [2022-01-11 01:59:37,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:59:37,135 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:59:37,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-1.c[321,334] [2022-01-11 01:59:37,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:59:37,163 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:59:37,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37 WrapperNode [2022-01-11 01:59:37,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:59:37,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:59:37,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:59:37,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:59:37,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,187 INFO L137 Inliner]: procedures = 15, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-01-11 01:59:37,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:59:37,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:59:37,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:59:37,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:59:37,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:59:37,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:59:37,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:59:37,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:59:37,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:59:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:59:37,247 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 01:59:37,250 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 01:59:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:59:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:59:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 01:59:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 01:59:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:59:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:59:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 01:59:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 01:59:37,313 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:59:37,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:59:37,442 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:59:37,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:59:37,447 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 01:59:37,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:59:37 BoogieIcfgContainer [2022-01-11 01:59:37,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:59:37,449 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:59:37,449 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:59:37,450 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:59:37,452 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:59:37" (1/1) ... [2022-01-11 01:59:37,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:59:37 BasicIcfg [2022-01-11 01:59:37,522 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:59:37,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:59:37,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:59:37,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:59:37,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:59:36" (1/4) ... [2022-01-11 01:59:37,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb28ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:59:37, skipping insertion in model container [2022-01-11 01:59:37,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:59:37" (2/4) ... [2022-01-11 01:59:37,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb28ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:59:37, skipping insertion in model container [2022-01-11 01:59:37,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:59:37" (3/4) ... [2022-01-11 01:59:37,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb28ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:59:37, skipping insertion in model container [2022-01-11 01:59:37,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:59:37" (4/4) ... [2022-01-11 01:59:37,548 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-1.cTransformedIcfg [2022-01-11 01:59:37,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:59:37,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 01:59:37,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:59:37,616 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 01:59:37,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 01:59:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:59:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-11 01:59:37,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:59:37,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-11 01:59:37,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:59:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:59:37,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1805578951, now seen corresponding path program 1 times [2022-01-11 01:59:37,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:59:37,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45302889] [2022-01-11 01:59:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:59:37,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:59:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:59:37,807 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 01:59:37,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:59:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45302889] [2022-01-11 01:59:37,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45302889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:59:37,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:59:37,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:59:37,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885963606] [2022-01-11 01:59:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:59:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 01:59:37,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:59:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 01:59:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 01:59:37,839 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 01:59:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:59:37,856 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-01-11 01:59:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 01:59:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-01-11 01:59:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:59:37,862 INFO L225 Difference]: With dead ends: 20 [2022-01-11 01:59:37,862 INFO L226 Difference]: Without dead ends: 8 [2022-01-11 01:59:37,864 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 01:59:37,866 INFO L933 BasicCegarLoop]: 12 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, 12 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 01:59:37,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:59:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-01-11 01:59:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-01-11 01:59:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 01:59:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-01-11 01:59:37,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-01-11 01:59:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:59:37,886 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-01-11 01:59:37,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 01:59:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-01-11 01:59:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-11 01:59:37,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:59:37,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-11 01:59:37,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:59:37,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:59:37,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:59:37,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1805608742, now seen corresponding path program 1 times [2022-01-11 01:59:37,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:59:37,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638159352] [2022-01-11 01:59:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:59:37,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:59:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:59:37,969 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 01:59:37,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:59:37,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638159352] [2022-01-11 01:59:37,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638159352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:59:37,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:59:37,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:59:37,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34880256] [2022-01-11 01:59:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:59:37,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:59:37,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:59:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:59:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:59:37,972 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 01:59:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:59:38,002 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-01-11 01:59:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:59:38,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-01-11 01:59:38,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:59:38,003 INFO L225 Difference]: With dead ends: 14 [2022-01-11 01:59:38,003 INFO L226 Difference]: Without dead ends: 10 [2022-01-11 01:59:38,004 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 01:59:38,005 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 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 01:59:38,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:59:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-01-11 01:59:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-01-11 01:59:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 01:59:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-01-11 01:59:38,008 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-01-11 01:59:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:59:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-01-11 01:59:38,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 01:59:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-01-11 01:59:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-11 01:59:38,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:59:38,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:59:38,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:59:38,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:59:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:59:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 52644360, now seen corresponding path program 1 times [2022-01-11 01:59:38,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:59:38,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365567841] [2022-01-11 01:59:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:59:38,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:59:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:59:38,097 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 01:59:38,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:59:38,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365567841] [2022-01-11 01:59:38,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365567841] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:59:38,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25093249] [2022-01-11 01:59:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:59:38,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:59:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:59:38,100 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 01:59:38,101 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 01:59:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:59:38,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-11 01:59:38,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:59:38,337 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 01:59:38,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:59:38,385 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 01:59:38,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25093249] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:59:38,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:59:38,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-11 01:59:38,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861337519] [2022-01-11 01:59:38,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:59:38,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 01:59:38,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:59:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 01:59:38,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:59:38,391 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:59:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:59:38,487 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-01-11 01:59:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:59:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:59:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:59:38,488 INFO L225 Difference]: With dead ends: 19 [2022-01-11 01:59:38,488 INFO L226 Difference]: Without dead ends: 15 [2022-01-11 01:59:38,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-11 01:59:38,489 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:59:38,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:59:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-11 01:59:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-11 01:59:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 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 01:59:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-01-11 01:59:38,493 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-01-11 01:59:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:59:38,493 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-01-11 01:59:38,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 01:59:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-01-11 01:59:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 01:59:38,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:59:38,494 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-01-11 01:59:38,536 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 01:59:38,694 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 01:59:38,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:59:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:59:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash 20991918, now seen corresponding path program 2 times [2022-01-11 01:59:38,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:59:38,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249565953] [2022-01-11 01:59:38,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:59:38,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:59:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:59:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:59:38,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:59:38,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249565953] [2022-01-11 01:59:38,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249565953] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:59:38,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517200437] [2022-01-11 01:59:38,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 01:59:38,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:59:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:59:38,839 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 01:59:38,840 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 01:59:38,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 01:59:38,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 01:59:38,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-11 01:59:38,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:59:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:59:51,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:59:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:59:57,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517200437] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:59:57,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:59:57,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 18 [2022-01-11 01:59:57,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992257558] [2022-01-11 01:59:57,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:59:57,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-11 01:59:57,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:59:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-11 01:59:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=211, Unknown=4, NotChecked=0, Total=306 [2022-01-11 01:59:57,057 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:00:03,629 WARN L228 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 43 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:00:21,459 WARN L228 SmtUtils]: Spent 9.81s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:00:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:00:21,498 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-11 02:00:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 02:00:21,499 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 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 14 [2022-01-11 02:00:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:00:21,500 INFO L225 Difference]: With dead ends: 29 [2022-01-11 02:00:21,500 INFO L226 Difference]: Without dead ends: 25 [2022-01-11 02:00:21,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=165, Invalid=336, Unknown=5, NotChecked=0, Total=506 [2022-01-11 02:00:21,501 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 02:00:21,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 26 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 59 Invalid, 0 Unknown, 15 Unchecked, 0.8s Time] [2022-01-11 02:00:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-11 02:00:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-11 02:00:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 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 02:00:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-01-11 02:00:21,506 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14 [2022-01-11 02:00:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:00:21,506 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-01-11 02:00:21,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 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 02:00:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-01-11 02:00:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 02:00:21,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:00:21,507 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1] [2022-01-11 02:00:21,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 02:00:21,707 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 02:00:21,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:00:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:00:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 491392792, now seen corresponding path program 3 times [2022-01-11 02:00:21,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:00:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353255062] [2022-01-11 02:00:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:00:21,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:00:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:00:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:00:21,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:00:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353255062] [2022-01-11 02:00:21,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353255062] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:00:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119709230] [2022-01-11 02:00:21,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:00:21,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:00:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:00:21,928 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 02:00:21,931 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 02:00:27,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-01-11 02:00:27,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:00:27,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-11 02:00:27,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:00:28,120 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 02:00:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:00:28,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:00:28,340 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 31 treesize of output 29 [2022-01-11 02:00:28,351 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 64 treesize of output 58