/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:14:49,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:14:49,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:14:49,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 05:14:49,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 05:14:49,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 05:14:49,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 05:14:49,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 05:14:49,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 05:14:49,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 05:14:49,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 05:14:49,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 05:14:49,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:14:49,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:14:49,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:14:49,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:14:49,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:14:49,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:14:49,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:14:49,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:14:49,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:14:49,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:14:49,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:14:49,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:14:49,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 05:14:49,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 05:14:49,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 05:14:49,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 05:14:49,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 05:14:49,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 05:14:49,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 05:14:49,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 05:14:49,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 05:14:49,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 05:14:49,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 05:14:49,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 05:14:49,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 05:14:49,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 05:14:49,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:14:49,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:14:49,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:14:49,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 05:14:49,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:14:49,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:14:49,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:14:49,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:14:49,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:14:49,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:14:49,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:14:49,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:14:49,449 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:14:49,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:14:49,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:14:49,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:14:49,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:14:49,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:14:49,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:14:49,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:14:49,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:14:49,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:14:49,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:14:49,452 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:14:49,452 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:14:49,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:14:49,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:14:49,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:14:49,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:14:49,452 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:14:49,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:14:49,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:14:49,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:14:49,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:14:49,668 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:14:49,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02.c [2022-01-10 05:14:49,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441d2133f/a00130097651486e9254c98ae1cb8fa8/FLAG74a8061ba [2022-01-10 05:14:50,162 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:14:50,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label02.c [2022-01-10 05:14:50,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441d2133f/a00130097651486e9254c98ae1cb8fa8/FLAG74a8061ba [2022-01-10 05:14:50,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441d2133f/a00130097651486e9254c98ae1cb8fa8 [2022-01-10 05:14:50,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:14:50,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:14:50,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:14:50,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:14:50,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:14:50,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:14:50" (1/1) ... [2022-01-10 05:14:50,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15df378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:50, skipping insertion in model container [2022-01-10 05:14:50,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:14:50" (1/1) ... [2022-01-10 05:14:50,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:14:50,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:14:50,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label02.c[1237,1250] [2022-01-10 05:14:51,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:14:51,192 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:14:51,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label02.c[1237,1250] [2022-01-10 05:14:51,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:14:51,350 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:14:51,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51 WrapperNode [2022-01-10 05:14:51,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:14:51,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:14:51,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:14:51,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:14:51,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,420 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 856 [2022-01-10 05:14:51,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:14:51,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:14:51,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:14:51,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:14:51,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:14:51,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:14:51,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:14:51,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:14:51,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (1/1) ... [2022-01-10 05:14:51,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:14:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:14:51,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 05:14:51,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 05:14:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:14:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:14:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:14:51,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:14:51,578 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:14:51,580 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:14:53,861 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:14:53,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:14:53,868 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:14:53,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:14:53 BoogieIcfgContainer [2022-01-10 05:14:53,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:14:53,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:14:53,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:14:53,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:14:53,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:14:50" (1/3) ... [2022-01-10 05:14:53,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec4f6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:14:53, skipping insertion in model container [2022-01-10 05:14:53,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:14:51" (2/3) ... [2022-01-10 05:14:53,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec4f6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:14:53, skipping insertion in model container [2022-01-10 05:14:53,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:14:53" (3/3) ... [2022-01-10 05:14:53,880 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label02.c [2022-01-10 05:14:53,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:14:53,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:14:53,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:14:53,934 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 05:14:53,934 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:14:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:14:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 05:14:53,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:14:53,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:14:53,958 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:14:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:14:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash 647015545, now seen corresponding path program 1 times [2022-01-10 05:14:53,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:14:53,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290899041] [2022-01-10 05:14:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:14:53,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:14:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:14:53,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:14:54,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 05:14:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:14:54,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:14:54,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:14:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:14:54,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:14:54,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:14:54,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290899041] [2022-01-10 05:14:54,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290899041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:14:54,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:14:54,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:14:54,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312237825] [2022-01-10 05:14:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:14:54,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:14:54,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:14:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:14:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:14:54,143 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2022-01-10 05:14:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:14:56,824 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2022-01-10 05:14:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:14:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2022-01-10 05:14:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:14:56,835 INFO L225 Difference]: With dead ends: 669 [2022-01-10 05:14:56,835 INFO L226 Difference]: Without dead ends: 360 [2022-01-10 05:14:56,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:14:56,840 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 188 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:14:56,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 132 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 05:14:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-10 05:14:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-01-10 05:14:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4540389972144847) internal successors, (522), 359 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:14:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 522 transitions. [2022-01-10 05:14:56,878 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 522 transitions. Word has length 9 [2022-01-10 05:14:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:14:56,878 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 522 transitions. [2022-01-10 05:14:56,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2022-01-10 05:14:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 522 transitions. [2022-01-10 05:14:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 05:14:56,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:14:56,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:14:56,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 05:14:57,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:14:57,087 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:14:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:14:57,088 INFO L85 PathProgramCache]: Analyzing trace with hash -478648631, now seen corresponding path program 1 times [2022-01-10 05:14:57,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:14:57,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325469536] [2022-01-10 05:14:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:14:57,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:14:57,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:14:57,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:14:57,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 05:14:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:14:57,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:14:57,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:14:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:14:57,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:14:57,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:14:57,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325469536] [2022-01-10 05:14:57,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325469536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:14:57,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:14:57,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:14:57,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069082831] [2022-01-10 05:14:57,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:14:57,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:14:57,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:14:57,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:14:57,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:14:57,362 INFO L87 Difference]: Start difference. First operand 360 states and 522 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:15:00,011 INFO L93 Difference]: Finished difference Result 1074 states and 1561 transitions. [2022-01-10 05:15:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:15:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 05:15:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:15:00,014 INFO L225 Difference]: With dead ends: 1074 [2022-01-10 05:15:00,014 INFO L226 Difference]: Without dead ends: 716 [2022-01-10 05:15:00,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:15:00,019 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 118 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:15:00,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 102 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 05:15:00,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-01-10 05:15:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2022-01-10 05:15:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.3454545454545455) internal successors, (962), 715 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 962 transitions. [2022-01-10 05:15:00,053 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 962 transitions. Word has length 75 [2022-01-10 05:15:00,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:15:00,054 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 962 transitions. [2022-01-10 05:15:00,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:00,054 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 962 transitions. [2022-01-10 05:15:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 05:15:00,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:15:00,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:15:00,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:15:00,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:15:00,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:15:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:15:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash 147497422, now seen corresponding path program 1 times [2022-01-10 05:15:00,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:15:00,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244423483] [2022-01-10 05:15:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:15:00,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:15:00,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:15:00,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:15:00,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 05:15:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:15:00,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:15:00,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:15:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:15:00,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:15:00,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:15:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244423483] [2022-01-10 05:15:00,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244423483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:15:00,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:15:00,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:15:00,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571767513] [2022-01-10 05:15:00,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:15:00,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:15:00,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:15:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:15:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:15:00,474 INFO L87 Difference]: Start difference. First operand 716 states and 962 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:15:02,934 INFO L93 Difference]: Finished difference Result 1966 states and 2656 transitions. [2022-01-10 05:15:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:15:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 05:15:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:15:02,938 INFO L225 Difference]: With dead ends: 1966 [2022-01-10 05:15:02,939 INFO L226 Difference]: Without dead ends: 1252 [2022-01-10 05:15:02,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:15:02,940 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 131 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:15:02,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 88 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 05:15:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-10 05:15:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1250. [2022-01-10 05:15:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.2465972778222578) internal successors, (1557), 1249 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1557 transitions. [2022-01-10 05:15:02,964 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1557 transitions. Word has length 77 [2022-01-10 05:15:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:15:02,966 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1557 transitions. [2022-01-10 05:15:02,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1557 transitions. [2022-01-10 05:15:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 05:15:02,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:15:02,972 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:15:02,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 05:15:03,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:15:03,180 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:15:03,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:15:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1732073492, now seen corresponding path program 1 times [2022-01-10 05:15:03,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:15:03,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545288529] [2022-01-10 05:15:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:15:03,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:15:03,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:15:03,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:15:03,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 05:15:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:15:03,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:15:03,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:15:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:15:03,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:15:03,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:15:03,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545288529] [2022-01-10 05:15:03,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545288529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:15:03,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:15:03,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:15:03,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918059312] [2022-01-10 05:15:03,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:15:03,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:15:03,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:15:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:15:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:15:03,366 INFO L87 Difference]: Start difference. First operand 1250 states and 1557 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:15:05,903 INFO L93 Difference]: Finished difference Result 2676 states and 3459 transitions. [2022-01-10 05:15:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:15:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 05:15:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:15:05,908 INFO L225 Difference]: With dead ends: 2676 [2022-01-10 05:15:05,908 INFO L226 Difference]: Without dead ends: 1606 [2022-01-10 05:15:05,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:15:05,909 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 172 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 05:15:05,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 255 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 05:15:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2022-01-10 05:15:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2022-01-10 05:15:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.2249221183800623) internal successors, (1966), 1605 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1966 transitions. [2022-01-10 05:15:05,932 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1966 transitions. Word has length 89 [2022-01-10 05:15:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:15:05,933 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1966 transitions. [2022-01-10 05:15:05,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1966 transitions. [2022-01-10 05:15:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 05:15:05,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:15:05,937 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:15:05,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:15:06,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:15:06,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:15:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:15:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1805183316, now seen corresponding path program 1 times [2022-01-10 05:15:06,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:15:06,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218316849] [2022-01-10 05:15:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:15:06,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:15:06,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:15:06,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:15:06,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:15:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:15:06,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:15:06,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:15:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:15:06,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:15:06,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:15:06,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218316849] [2022-01-10 05:15:06,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218316849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:15:06,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:15:06,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:15:06,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291923578] [2022-01-10 05:15:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:15:06,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 05:15:06,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:15:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 05:15:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 05:15:06,961 INFO L87 Difference]: Start difference. First operand 1606 states and 1966 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:09,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:15:09,007 INFO L93 Difference]: Finished difference Result 2705 states and 3383 transitions. [2022-01-10 05:15:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 05:15:09,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-01-10 05:15:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:15:09,012 INFO L225 Difference]: With dead ends: 2705 [2022-01-10 05:15:09,012 INFO L226 Difference]: Without dead ends: 1428 [2022-01-10 05:15:09,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 05:15:09,015 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 103 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:15:09,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 114 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 05:15:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2022-01-10 05:15:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2022-01-10 05:15:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.229852838121934) internal successors, (1755), 1427 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1755 transitions. [2022-01-10 05:15:09,034 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1755 transitions. Word has length 168 [2022-01-10 05:15:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:15:09,035 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1755 transitions. [2022-01-10 05:15:09,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1755 transitions. [2022-01-10 05:15:09,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-10 05:15:09,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:15:09,037 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:15:09,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 05:15:09,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:15:09,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:15:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:15:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1719613754, now seen corresponding path program 1 times [2022-01-10 05:15:09,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:15:09,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703766501] [2022-01-10 05:15:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:15:09,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:15:09,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:15:09,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:15:09,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:15:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:15:09,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:15:09,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:15:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-10 05:15:10,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:15:10,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:15:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703766501] [2022-01-10 05:15:10,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703766501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:15:10,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:15:10,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:15:10,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852250100] [2022-01-10 05:15:10,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:15:10,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:15:10,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:15:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:15:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:15:10,566 INFO L87 Difference]: Start difference. First operand 1428 states and 1755 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:15:12,728 INFO L93 Difference]: Finished difference Result 2498 states and 3143 transitions. [2022-01-10 05:15:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:15:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 263 [2022-01-10 05:15:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:15:12,732 INFO L225 Difference]: With dead ends: 2498 [2022-01-10 05:15:12,732 INFO L226 Difference]: Without dead ends: 1428 [2022-01-10 05:15:12,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:15:12,734 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:15:12,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 123 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 05:15:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2022-01-10 05:15:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2022-01-10 05:15:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.2256482130343378) internal successors, (1749), 1427 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1749 transitions. [2022-01-10 05:15:12,797 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1749 transitions. Word has length 263 [2022-01-10 05:15:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:15:12,798 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1749 transitions. [2022-01-10 05:15:12,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1749 transitions. [2022-01-10 05:15:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-01-10 05:15:12,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:15:12,803 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:15:12,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 05:15:13,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:15:13,004 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:15:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:15:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1762722953, now seen corresponding path program 1 times [2022-01-10 05:15:13,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:15:13,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406709778] [2022-01-10 05:15:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:15:13,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:15:13,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:15:13,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:15:13,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 05:15:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:15:13,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:15:13,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:15:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 245 proven. 135 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-10 05:15:13,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:15:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-10 05:15:14,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:15:14,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406709778] [2022-01-10 05:15:14,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406709778] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:15:14,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:15:14,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:15:14,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260072545] [2022-01-10 05:15:14,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:15:14,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:15:14,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:15:14,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:15:14,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:15:14,951 INFO L87 Difference]: Start difference. First operand 1428 states and 1749 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:15:20,419 INFO L93 Difference]: Finished difference Result 3032 states and 3894 transitions. [2022-01-10 05:15:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:15:20,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 367 [2022-01-10 05:15:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:15:20,424 INFO L225 Difference]: With dead ends: 3032 [2022-01-10 05:15:20,424 INFO L226 Difference]: Without dead ends: 1962 [2022-01-10 05:15:20,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:15:20,426 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 135 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:15:20,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 57 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 05:15:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-01-10 05:15:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2022-01-10 05:15:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.2259051504334524) internal successors, (2404), 1961 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2404 transitions. [2022-01-10 05:15:20,444 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2404 transitions. Word has length 367 [2022-01-10 05:15:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:15:20,444 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2404 transitions. [2022-01-10 05:15:20,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2404 transitions. [2022-01-10 05:15:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-01-10 05:15:20,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:15:20,448 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:15:20,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 05:15:20,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:15:20,659 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:15:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:15:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash -617159143, now seen corresponding path program 1 times [2022-01-10 05:15:20,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:15:20,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453004215] [2022-01-10 05:15:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:15:20,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:15:20,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:15:20,664 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:15:20,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 05:15:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:15:20,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:15:20,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:15:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 256 proven. 159 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-10 05:15:21,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:15:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-10 05:15:22,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:15:22,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453004215] [2022-01-10 05:15:22,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453004215] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:15:22,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:15:22,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:15:22,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454728285] [2022-01-10 05:15:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:15:22,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:15:22,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:15:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:15:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:15:22,459 INFO L87 Difference]: Start difference. First operand 1962 states and 2404 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:15:28,089 INFO L93 Difference]: Finished difference Result 4634 states and 5859 transitions. [2022-01-10 05:15:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:15:28,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 379 [2022-01-10 05:15:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:15:28,097 INFO L225 Difference]: With dead ends: 4634 [2022-01-10 05:15:28,097 INFO L226 Difference]: Without dead ends: 3030 [2022-01-10 05:15:28,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:15:28,099 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 114 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:15:28,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 232 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 05:15:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2022-01-10 05:15:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2674. [2022-01-10 05:15:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.235316124205013) internal successors, (3302), 2673 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3302 transitions. [2022-01-10 05:15:28,126 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3302 transitions. Word has length 379 [2022-01-10 05:15:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:15:28,126 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 3302 transitions. [2022-01-10 05:15:28,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:15:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3302 transitions. [2022-01-10 05:15:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-01-10 05:15:28,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:15:28,132 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:15:28,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 05:15:28,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:15:28,343 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:15:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:15:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1958434270, now seen corresponding path program 1 times [2022-01-10 05:15:28,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:15:28,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301071267] [2022-01-10 05:15:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:15:28,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:15:28,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:15:28,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:15:28,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 05:15:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:15:28,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 05:15:28,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:15:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 247 proven. 277 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 05:15:29,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:15:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 495 proven. 29 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 05:15:35,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:15:35,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301071267] [2022-01-10 05:15:35,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301071267] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:15:35,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:15:35,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 05:15:35,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312944731] [2022-01-10 05:15:35,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:15:35,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 05:15:35,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:15:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 05:15:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 05:15:35,148 INFO L87 Difference]: Start difference. First operand 2674 states and 3302 transitions. Second operand has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:16:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:16:05,064 INFO L93 Difference]: Finished difference Result 7066 states and 8872 transitions. [2022-01-10 05:16:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 05:16:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 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 477 [2022-01-10 05:16:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:16:05,078 INFO L225 Difference]: With dead ends: 7066 [2022-01-10 05:16:05,078 INFO L226 Difference]: Without dead ends: 4634 [2022-01-10 05:16:05,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 949 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 05:16:05,080 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 445 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-01-10 05:16:05,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 53 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2022-01-10 05:16:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2022-01-10 05:16:05,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4632. [2022-01-10 05:16:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.1038652558842583) internal successors, (5112), 4631 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:16:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 5112 transitions. [2022-01-10 05:16:05,129 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 5112 transitions. Word has length 477 [2022-01-10 05:16:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:16:05,130 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 5112 transitions. [2022-01-10 05:16:05,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:16:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 5112 transitions. [2022-01-10 05:16:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-01-10 05:16:05,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:16:05,134 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:16:05,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 05:16:05,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:16:05,345 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:16:05,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:16:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 565595539, now seen corresponding path program 1 times [2022-01-10 05:16:05,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:16:05,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049898445] [2022-01-10 05:16:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:16:05,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:16:05,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:16:05,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:16:05,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 05:16:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:16:05,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 05:16:05,523 INFO L286 TraceCheckSpWp]: Computing forward predicates...