/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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:10:20,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:10:20,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:10:20,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:10:20,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:10:20,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:10:20,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:10:20,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:10:20,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:10:20,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:10:20,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:10:20,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:10:20,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:10:20,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:10:20,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:10:20,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:10:20,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:10:20,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:10:20,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:10:20,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:10:20,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:10:20,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:10:20,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:10:20,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:10:20,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:10:20,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:10:20,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:10:20,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:10:20,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:10:20,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 07:10:20,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:10:20,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:10:20,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:10:20,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:10:20,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:10:20,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:10:20,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:10:20,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:10:20,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:10:20,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:10:20,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:10:20,536 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 07:10:20,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:10:20,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:10:20,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:10:20,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:10:20,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:10:20,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:10:20,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:10:20,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:10:20,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:10:20,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:10:20,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:10:20,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:10:20,553 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:10:20,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:10:20,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:10:20,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:10:20,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:10:20,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:10:20,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:10:20,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:10:20,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:10:20,838 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:10:20,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-01-10 07:10:20,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c99e06b1/3242d6d5dd07430d8fa9c125d1e87c03/FLAG6ba2eac76 [2022-01-10 07:10:21,555 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:10:21,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-01-10 07:10:21,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c99e06b1/3242d6d5dd07430d8fa9c125d1e87c03/FLAG6ba2eac76 [2022-01-10 07:10:22,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c99e06b1/3242d6d5dd07430d8fa9c125d1e87c03 [2022-01-10 07:10:22,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:10:22,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:10:22,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:10:22,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:10:22,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:10:22,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:22" (1/1) ... [2022-01-10 07:10:22,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd7ca6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:22, skipping insertion in model container [2022-01-10 07:10:22,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:22" (1/1) ... [2022-01-10 07:10:22,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:10:22,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:10:22,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2022-01-10 07:10:23,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:10:23,360 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:10:23,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2022-01-10 07:10:24,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:10:24,023 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:10:24,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24 WrapperNode [2022-01-10 07:10:24,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:10:24,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:10:24,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:10:24,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:10:24,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,348 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19920 [2022-01-10 07:10:24,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:10:24,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:10:24,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:10:24,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:10:24,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:10:24,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:10:24,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:10:24,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:10:24,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (1/1) ... [2022-01-10 07:10:24,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:10:24,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:10:24,731 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 07:10:24,738 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 07:10:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:10:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:10:24,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:10:24,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:10:25,229 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:10:25,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:10:33,366 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:10:33,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:10:33,394 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:10:33,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:33 BoogieIcfgContainer [2022-01-10 07:10:33,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:10:33,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:10:33,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:10:33,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:10:33,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:10:22" (1/3) ... [2022-01-10 07:10:33,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d77c9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:33, skipping insertion in model container [2022-01-10 07:10:33,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:24" (2/3) ... [2022-01-10 07:10:33,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d77c9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:33, skipping insertion in model container [2022-01-10 07:10:33,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:33" (3/3) ... [2022-01-10 07:10:33,406 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-01-10 07:10:33,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:10:33,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:10:33,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:10:33,463 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 07:10:33,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:10:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 2875 states, 2873 states have (on average 1.9070657848938393) internal successors, (5479), 2874 states have internal predecessors, (5479), 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 07:10:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 07:10:33,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:33,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:33,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:33,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1826416770, now seen corresponding path program 1 times [2022-01-10 07:10:33,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:33,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265877993] [2022-01-10 07:10:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:33,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:33,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:33,565 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 07:10:33,567 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 07:10:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:34,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:34,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:34,833 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 07:10:34,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:34,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:34,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265877993] [2022-01-10 07:10:34,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265877993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:34,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:34,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:34,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444339774] [2022-01-10 07:10:34,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:34,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:34,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:34,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:34,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:34,873 INFO L87 Difference]: Start difference. First operand has 2875 states, 2873 states have (on average 1.9070657848938393) internal successors, (5479), 2874 states have internal predecessors, (5479), 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 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 07:10:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:35,084 INFO L93 Difference]: Finished difference Result 3233 states and 6071 transitions. [2022-01-10 07:10:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:35,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2022-01-10 07:10:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:35,100 INFO L225 Difference]: With dead ends: 3233 [2022-01-10 07:10:35,101 INFO L226 Difference]: Without dead ends: 2044 [2022-01-10 07:10:35,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:35,107 INFO L933 BasicCegarLoop]: 3869 mSDtfsCounter, 109 mSDsluCounter, 5244 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 9113 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1209 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:35,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 9113 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 1209 Unchecked, 0.1s Time] [2022-01-10 07:10:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2022-01-10 07:10:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2022-01-10 07:10:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 1.2809593734703866) internal successors, (2617), 2043 states have internal predecessors, (2617), 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 07:10:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2617 transitions. [2022-01-10 07:10:35,175 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2617 transitions. Word has length 79 [2022-01-10 07:10:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:35,176 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 2617 transitions. [2022-01-10 07:10:35,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 07:10:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2617 transitions. [2022-01-10 07:10:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 07:10:35,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:35,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:35,193 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 07:10:35,392 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 07:10:35,393 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash -827934042, now seen corresponding path program 1 times [2022-01-10 07:10:35,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:35,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120639047] [2022-01-10 07:10:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:35,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:35,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:35,396 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 07:10:35,397 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 07:10:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:36,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:36,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:36,372 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 07:10:36,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:36,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:36,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120639047] [2022-01-10 07:10:36,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120639047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:36,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:36,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:36,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095338829] [2022-01-10 07:10:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:36,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:36,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:36,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:36,375 INFO L87 Difference]: Start difference. First operand 2044 states and 2617 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:10:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:37,319 INFO L93 Difference]: Finished difference Result 2665 states and 3483 transitions. [2022-01-10 07:10:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2022-01-10 07:10:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:37,325 INFO L225 Difference]: With dead ends: 2665 [2022-01-10 07:10:37,325 INFO L226 Difference]: Without dead ends: 2049 [2022-01-10 07:10:37,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:37,327 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 50 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:37,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 4220 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 15 Unchecked, 0.9s Time] [2022-01-10 07:10:37,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-01-10 07:10:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2048. [2022-01-10 07:10:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 1.2808988764044944) internal successors, (2622), 2047 states have internal predecessors, (2622), 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 07:10:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2622 transitions. [2022-01-10 07:10:37,371 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2622 transitions. Word has length 80 [2022-01-10 07:10:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:37,372 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 2622 transitions. [2022-01-10 07:10:37,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 07:10:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2622 transitions. [2022-01-10 07:10:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:10:37,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:37,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:37,397 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 07:10:37,585 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 07:10:37,586 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:37,586 INFO L85 PathProgramCache]: Analyzing trace with hash 940513574, now seen corresponding path program 1 times [2022-01-10 07:10:37,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:37,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815172387] [2022-01-10 07:10:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:37,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:37,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:37,588 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 07:10:37,590 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 07:10:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:38,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:38,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:38,587 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 07:10:38,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:38,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:38,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815172387] [2022-01-10 07:10:38,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815172387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:38,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:38,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:38,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072091415] [2022-01-10 07:10:38,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:38,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:38,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:38,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:38,589 INFO L87 Difference]: Start difference. First operand 2048 states and 2622 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 07:10:39,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:39,564 INFO L93 Difference]: Finished difference Result 2669 states and 3488 transitions. [2022-01-10 07:10:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:39,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-01-10 07:10:39,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:39,570 INFO L225 Difference]: With dead ends: 2669 [2022-01-10 07:10:39,570 INFO L226 Difference]: Without dead ends: 2053 [2022-01-10 07:10:39,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:39,572 INFO L933 BasicCegarLoop]: 2604 mSDtfsCounter, 30 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7353 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1008 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:39,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 7353 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 997 Invalid, 0 Unknown, 1008 Unchecked, 0.9s Time] [2022-01-10 07:10:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-01-10 07:10:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2052. [2022-01-10 07:10:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 1.280838615309605) internal successors, (2627), 2051 states have internal predecessors, (2627), 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 07:10:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2627 transitions. [2022-01-10 07:10:39,597 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2627 transitions. Word has length 81 [2022-01-10 07:10:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:39,598 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 2627 transitions. [2022-01-10 07:10:39,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 07:10:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2627 transitions. [2022-01-10 07:10:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:10:39,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:39,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:39,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 07:10:39,810 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 07:10:39,810 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1430110665, now seen corresponding path program 1 times [2022-01-10 07:10:39,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:39,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093570708] [2022-01-10 07:10:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:39,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:39,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:39,813 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 07:10:39,814 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 07:10:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:40,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:40,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:40,530 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 07:10:40,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:40,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093570708] [2022-01-10 07:10:40,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093570708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:40,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:40,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:40,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794834103] [2022-01-10 07:10:40,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:40,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:40,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:40,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:40,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:40,533 INFO L87 Difference]: Start difference. First operand 2052 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 07:10:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:40,632 INFO L93 Difference]: Finished difference Result 3725 states and 4854 transitions. [2022-01-10 07:10:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:40,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-01-10 07:10:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:40,637 INFO L225 Difference]: With dead ends: 3725 [2022-01-10 07:10:40,637 INFO L226 Difference]: Without dead ends: 1722 [2022-01-10 07:10:40,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 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 07:10:40,640 INFO L933 BasicCegarLoop]: 1918 mSDtfsCounter, 1885 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:40,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 2257 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:10:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-01-10 07:10:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2022-01-10 07:10:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 1.324607329842932) internal successors, (2277), 1719 states have internal predecessors, (2277), 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 07:10:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2277 transitions. [2022-01-10 07:10:40,663 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2277 transitions. Word has length 81 [2022-01-10 07:10:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:40,664 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2277 transitions. [2022-01-10 07:10:40,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 07:10:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2277 transitions. [2022-01-10 07:10:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:10:40,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:40,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:40,677 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 07:10:40,877 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 07:10:40,877 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1188468072, now seen corresponding path program 1 times [2022-01-10 07:10:40,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:40,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985631609] [2022-01-10 07:10:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:40,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:40,879 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 07:10:40,881 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 07:10:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:41,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:41,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:41,806 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 07:10:41,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:41,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:41,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985631609] [2022-01-10 07:10:41,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985631609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:41,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:41,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:41,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534586459] [2022-01-10 07:10:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:41,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:41,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:41,808 INFO L87 Difference]: Start difference. First operand 1720 states and 2277 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 07:10:42,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:42,752 INFO L93 Difference]: Finished difference Result 2380 states and 3254 transitions. [2022-01-10 07:10:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:42,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-01-10 07:10:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:42,757 INFO L225 Difference]: With dead ends: 2380 [2022-01-10 07:10:42,757 INFO L226 Difference]: Without dead ends: 1725 [2022-01-10 07:10:42,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:42,759 INFO L933 BasicCegarLoop]: 1924 mSDtfsCounter, 37 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 4262 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:42,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 4262 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1466 Invalid, 0 Unknown, 17 Unchecked, 0.9s Time] [2022-01-10 07:10:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2022-01-10 07:10:42,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1724. [2022-01-10 07:10:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.3244341265235056) internal successors, (2282), 1723 states have internal predecessors, (2282), 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 07:10:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2282 transitions. [2022-01-10 07:10:42,788 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2282 transitions. Word has length 81 [2022-01-10 07:10:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:42,788 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 2282 transitions. [2022-01-10 07:10:42,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 07:10:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2282 transitions. [2022-01-10 07:10:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:10:42,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:42,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:42,810 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 07:10:43,001 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 07:10:43,002 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash 626931614, now seen corresponding path program 1 times [2022-01-10 07:10:43,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208321887] [2022-01-10 07:10:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:43,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:43,004 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 07:10:43,079 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 07:10:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:43,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:43,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:43,867 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 07:10:43,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:43,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:43,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208321887] [2022-01-10 07:10:43,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208321887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:43,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:43,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:43,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190262446] [2022-01-10 07:10:43,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:43,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:43,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:43,869 INFO L87 Difference]: Start difference. First operand 1724 states and 2282 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:43,931 INFO L93 Difference]: Finished difference Result 2384 states and 3259 transitions. [2022-01-10 07:10:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:43,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 07:10:43,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:43,935 INFO L225 Difference]: With dead ends: 2384 [2022-01-10 07:10:43,935 INFO L226 Difference]: Without dead ends: 1729 [2022-01-10 07:10:43,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:43,937 INFO L933 BasicCegarLoop]: 1922 mSDtfsCounter, 44 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4251 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 755 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:43,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 4251 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 755 Unchecked, 0.0s Time] [2022-01-10 07:10:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2022-01-10 07:10:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1728. [2022-01-10 07:10:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.3242617255356108) internal successors, (2287), 1727 states have internal predecessors, (2287), 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 07:10:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2287 transitions. [2022-01-10 07:10:43,961 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2287 transitions. Word has length 82 [2022-01-10 07:10:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:43,961 INFO L470 AbstractCegarLoop]: Abstraction has 1728 states and 2287 transitions. [2022-01-10 07:10:43,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2287 transitions. [2022-01-10 07:10:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:10:43,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:43,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:43,982 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 07:10:44,182 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 07:10:44,183 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash 715722757, now seen corresponding path program 1 times [2022-01-10 07:10:44,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:44,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252322097] [2022-01-10 07:10:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:44,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:44,200 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 07:10:44,204 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 07:10:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:44,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:44,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:45,088 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 07:10:45,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:45,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:45,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252322097] [2022-01-10 07:10:45,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252322097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:45,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:45,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:45,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975545280] [2022-01-10 07:10:45,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:45,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:45,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:45,090 INFO L87 Difference]: Start difference. First operand 1728 states and 2287 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:46,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:46,055 INFO L93 Difference]: Finished difference Result 2388 states and 3264 transitions. [2022-01-10 07:10:46,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:46,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 07:10:46,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:46,060 INFO L225 Difference]: With dead ends: 2388 [2022-01-10 07:10:46,060 INFO L226 Difference]: Without dead ends: 1733 [2022-01-10 07:10:46,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:46,062 INFO L933 BasicCegarLoop]: 1922 mSDtfsCounter, 38 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:46,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 4260 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1462 Invalid, 0 Unknown, 19 Unchecked, 0.9s Time] [2022-01-10 07:10:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2022-01-10 07:10:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1732. [2022-01-10 07:10:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 1.3240901213171576) internal successors, (2292), 1731 states have internal predecessors, (2292), 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 07:10:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2292 transitions. [2022-01-10 07:10:46,088 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2292 transitions. Word has length 82 [2022-01-10 07:10:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:46,089 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 2292 transitions. [2022-01-10 07:10:46,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2292 transitions. [2022-01-10 07:10:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:10:46,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:46,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:46,111 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 07:10:46,301 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 07:10:46,301 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:46,302 INFO L85 PathProgramCache]: Analyzing trace with hash -633998363, now seen corresponding path program 1 times [2022-01-10 07:10:46,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:46,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859886618] [2022-01-10 07:10:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:46,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:46,305 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 07:10:46,306 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 07:10:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:46,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:46,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:46,995 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 07:10:46,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:46,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859886618] [2022-01-10 07:10:46,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859886618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:46,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:46,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:46,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947204581] [2022-01-10 07:10:46,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:46,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:46,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:46,999 INFO L87 Difference]: Start difference. First operand 1732 states and 2292 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 07:10:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:47,093 INFO L93 Difference]: Finished difference Result 3500 states and 4738 transitions. [2022-01-10 07:10:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2022-01-10 07:10:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:47,099 INFO L225 Difference]: With dead ends: 3500 [2022-01-10 07:10:47,099 INFO L226 Difference]: Without dead ends: 1833 [2022-01-10 07:10:47,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 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 07:10:47,103 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 1547 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:47,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 1912 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:10:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2022-01-10 07:10:47,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1831. [2022-01-10 07:10:47,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 1.3737704918032787) internal successors, (2514), 1830 states have internal predecessors, (2514), 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 07:10:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2514 transitions. [2022-01-10 07:10:47,134 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2514 transitions. Word has length 82 [2022-01-10 07:10:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:47,134 INFO L470 AbstractCegarLoop]: Abstraction has 1831 states and 2514 transitions. [2022-01-10 07:10:47,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 07:10:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2514 transitions. [2022-01-10 07:10:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:10:47,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:47,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:47,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 07:10:47,346 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 07:10:47,347 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2000502981, now seen corresponding path program 1 times [2022-01-10 07:10:47,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:47,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722511127] [2022-01-10 07:10:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:47,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:47,349 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 07:10:47,385 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 07:10:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:47,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:47,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:48,208 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 07:10:48,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:48,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:48,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722511127] [2022-01-10 07:10:48,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722511127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:48,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:48,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:48,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526979203] [2022-01-10 07:10:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:48,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:48,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:48,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:48,210 INFO L87 Difference]: Start difference. First operand 1831 states and 2514 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:49,044 INFO L93 Difference]: Finished difference Result 2790 states and 3967 transitions. [2022-01-10 07:10:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:49,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 07:10:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:49,049 INFO L225 Difference]: With dead ends: 2790 [2022-01-10 07:10:49,049 INFO L226 Difference]: Without dead ends: 1841 [2022-01-10 07:10:49,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:49,051 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 30 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:49,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 4333 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1264 Invalid, 0 Unknown, 676 Unchecked, 0.8s Time] [2022-01-10 07:10:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2022-01-10 07:10:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1838. [2022-01-10 07:10:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 1.3739793140990746) internal successors, (2524), 1837 states have internal predecessors, (2524), 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 07:10:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2524 transitions. [2022-01-10 07:10:49,079 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2524 transitions. Word has length 82 [2022-01-10 07:10:49,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:49,079 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 2524 transitions. [2022-01-10 07:10:49,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2524 transitions. [2022-01-10 07:10:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:10:49,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:49,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:49,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:10:49,293 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 07:10:49,293 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash -419713893, now seen corresponding path program 1 times [2022-01-10 07:10:49,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:49,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416761973] [2022-01-10 07:10:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:49,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:49,295 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 07:10:49,333 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 07:10:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:49,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:10:49,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:50,804 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 07:10:50,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:50,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:50,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416761973] [2022-01-10 07:10:50,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416761973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:50,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:50,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:50,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512305695] [2022-01-10 07:10:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:50,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:10:50,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:10:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:10:50,808 INFO L87 Difference]: Start difference. First operand 1838 states and 2524 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 07:10:51,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:51,163 INFO L93 Difference]: Finished difference Result 3954 states and 5694 transitions. [2022-01-10 07:10:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:10:51,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 82 [2022-01-10 07:10:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:51,179 INFO L225 Difference]: With dead ends: 3954 [2022-01-10 07:10:51,180 INFO L226 Difference]: Without dead ends: 2998 [2022-01-10 07:10:51,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:10:51,182 INFO L933 BasicCegarLoop]: 1925 mSDtfsCounter, 2204 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 659 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:51,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2204 Valid, 5575 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 185 Invalid, 0 Unknown, 659 Unchecked, 0.3s Time] [2022-01-10 07:10:51,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2022-01-10 07:10:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 1828. [2022-01-10 07:10:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 1.3738368910782703) internal successors, (2510), 1827 states have internal predecessors, (2510), 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 07:10:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2510 transitions. [2022-01-10 07:10:51,247 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2510 transitions. Word has length 82 [2022-01-10 07:10:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:51,247 INFO L470 AbstractCegarLoop]: Abstraction has 1828 states and 2510 transitions. [2022-01-10 07:10:51,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 07:10:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2510 transitions. [2022-01-10 07:10:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 07:10:51,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:51,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:51,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:51,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:51,460 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1715108642, now seen corresponding path program 1 times [2022-01-10 07:10:51,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:51,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862488156] [2022-01-10 07:10:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:51,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:51,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:51,462 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:51,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:10:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:52,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:52,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:52,279 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 07:10:52,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:52,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:52,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862488156] [2022-01-10 07:10:52,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862488156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:52,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:52,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:52,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040432960] [2022-01-10 07:10:52,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:52,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:52,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:52,281 INFO L87 Difference]: Start difference. First operand 1828 states and 2510 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:52,390 INFO L93 Difference]: Finished difference Result 2795 states and 3969 transitions. [2022-01-10 07:10:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 07:10:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:52,395 INFO L225 Difference]: With dead ends: 2795 [2022-01-10 07:10:52,395 INFO L226 Difference]: Without dead ends: 1829 [2022-01-10 07:10:52,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:52,397 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 41 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 630 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:52,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 3460 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 630 Unchecked, 0.1s Time] [2022-01-10 07:10:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2022-01-10 07:10:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1829. [2022-01-10 07:10:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.37363238512035) internal successors, (2511), 1828 states have internal predecessors, (2511), 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 07:10:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2511 transitions. [2022-01-10 07:10:52,441 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2511 transitions. Word has length 82 [2022-01-10 07:10:52,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:52,441 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2511 transitions. [2022-01-10 07:10:52,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 07:10:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2511 transitions. [2022-01-10 07:10:52,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:10:52,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:52,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:52,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:52,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:52,653 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1226579394, now seen corresponding path program 1 times [2022-01-10 07:10:52,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:52,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303764461] [2022-01-10 07:10:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:52,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:52,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:52,656 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:52,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:10:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:53,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:53,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:53,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:53,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:53,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303764461] [2022-01-10 07:10:53,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303764461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:53,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:53,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:53,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458389406] [2022-01-10 07:10:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:53,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:53,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:53,538 INFO L87 Difference]: Start difference. First operand 1829 states and 2511 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:10:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:54,265 INFO L93 Difference]: Finished difference Result 2775 states and 3944 transitions. [2022-01-10 07:10:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:54,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-10 07:10:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:54,270 INFO L225 Difference]: With dead ends: 2775 [2022-01-10 07:10:54,270 INFO L226 Difference]: Without dead ends: 1741 [2022-01-10 07:10:54,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:54,271 INFO L933 BasicCegarLoop]: 1465 mSDtfsCounter, 32 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 580 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:54,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 4098 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1112 Invalid, 0 Unknown, 580 Unchecked, 0.7s Time] [2022-01-10 07:10:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-01-10 07:10:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2022-01-10 07:10:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 1.3804597701149426) internal successors, (2402), 1740 states have internal predecessors, (2402), 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 07:10:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2402 transitions. [2022-01-10 07:10:54,310 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2402 transitions. Word has length 83 [2022-01-10 07:10:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:54,311 INFO L470 AbstractCegarLoop]: Abstraction has 1741 states and 2402 transitions. [2022-01-10 07:10:54,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:10:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2402 transitions. [2022-01-10 07:10:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:10:54,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:54,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:54,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 07:10:54,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:54,522 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:54,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1045241442, now seen corresponding path program 1 times [2022-01-10 07:10:54,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:54,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292527189] [2022-01-10 07:10:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:54,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:54,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:54,524 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:54,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:10:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:55,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:55,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:55,380 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 07:10:55,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:55,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:55,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292527189] [2022-01-10 07:10:55,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292527189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:55,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:55,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:55,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582891885] [2022-01-10 07:10:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:55,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:55,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:55,382 INFO L87 Difference]: Start difference. First operand 1741 states and 2402 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:10:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:55,918 INFO L93 Difference]: Finished difference Result 2700 states and 3855 transitions. [2022-01-10 07:10:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-10 07:10:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:55,922 INFO L225 Difference]: With dead ends: 2700 [2022-01-10 07:10:55,922 INFO L226 Difference]: Without dead ends: 1751 [2022-01-10 07:10:55,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:55,937 INFO L933 BasicCegarLoop]: 1458 mSDtfsCounter, 38 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 625 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:55,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 3211 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 537 Invalid, 0 Unknown, 625 Unchecked, 0.5s Time] [2022-01-10 07:10:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-01-10 07:10:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1748. [2022-01-10 07:10:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 1.3806525472238123) internal successors, (2412), 1747 states have internal predecessors, (2412), 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 07:10:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2412 transitions. [2022-01-10 07:10:55,984 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2412 transitions. Word has length 83 [2022-01-10 07:10:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:55,984 INFO L470 AbstractCegarLoop]: Abstraction has 1748 states and 2412 transitions. [2022-01-10 07:10:55,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:10:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2412 transitions. [2022-01-10 07:10:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:10:55,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:55,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:55,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:56,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:56,197 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash 829508980, now seen corresponding path program 1 times [2022-01-10 07:10:56,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:56,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194503896] [2022-01-10 07:10:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:56,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:56,199 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:56,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:10:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:56,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:56,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:56,857 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 07:10:56,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:56,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:56,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194503896] [2022-01-10 07:10:56,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194503896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:56,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:56,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:56,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293950590] [2022-01-10 07:10:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:56,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:56,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:56,858 INFO L87 Difference]: Start difference. First operand 1748 states and 2412 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:10:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:56,960 INFO L93 Difference]: Finished difference Result 3420 states and 4940 transitions. [2022-01-10 07:10:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-10 07:10:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:56,965 INFO L225 Difference]: With dead ends: 3420 [2022-01-10 07:10:56,965 INFO L226 Difference]: Without dead ends: 2493 [2022-01-10 07:10:56,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 07:10:56,967 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 772 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:56,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 2516 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2022-01-10 07:10:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2489. [2022-01-10 07:10:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2488 states have (on average 1.4155948553054662) internal successors, (3522), 2488 states have internal predecessors, (3522), 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 07:10:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3522 transitions. [2022-01-10 07:10:57,027 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3522 transitions. Word has length 83 [2022-01-10 07:10:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:57,027 INFO L470 AbstractCegarLoop]: Abstraction has 2489 states and 3522 transitions. [2022-01-10 07:10:57,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:10:57,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3522 transitions. [2022-01-10 07:10:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:10:57,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:57,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:57,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:57,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:57,239 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:57,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1220736287, now seen corresponding path program 1 times [2022-01-10 07:10:57,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:57,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710696935] [2022-01-10 07:10:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:57,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:57,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:57,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:57,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:10:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:57,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:57,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:58,471 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 07:10:58,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:58,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:58,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710696935] [2022-01-10 07:10:58,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710696935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:58,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:58,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:58,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965341267] [2022-01-10 07:10:58,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:58,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:58,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:58,472 INFO L87 Difference]: Start difference. First operand 2489 states and 3522 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 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 07:10:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:58,996 INFO L93 Difference]: Finished difference Result 2932 states and 4198 transitions. [2022-01-10 07:10:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:58,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 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 83 [2022-01-10 07:10:58,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:59,008 INFO L225 Difference]: With dead ends: 2932 [2022-01-10 07:10:59,008 INFO L226 Difference]: Without dead ends: 2503 [2022-01-10 07:10:59,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:59,012 INFO L933 BasicCegarLoop]: 1450 mSDtfsCounter, 71 mSDsluCounter, 4543 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 5993 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2165 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:59,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 5993 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 2165 Unchecked, 0.4s Time] [2022-01-10 07:10:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2022-01-10 07:10:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2500. [2022-01-10 07:10:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.4145658263305323) internal successors, (3535), 2499 states have internal predecessors, (3535), 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 07:10:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3535 transitions. [2022-01-10 07:10:59,129 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3535 transitions. Word has length 83 [2022-01-10 07:10:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:59,130 INFO L470 AbstractCegarLoop]: Abstraction has 2500 states and 3535 transitions. [2022-01-10 07:10:59,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 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 07:10:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3535 transitions. [2022-01-10 07:10:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:10:59,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:59,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:59,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:59,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:59,346 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:10:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 261572518, now seen corresponding path program 1 times [2022-01-10 07:10:59,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:59,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051289844] [2022-01-10 07:10:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:59,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:59,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:59,348 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:59,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:10:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:59,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:59,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:00,108 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 07:11:00,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:00,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:00,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051289844] [2022-01-10 07:11:00,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051289844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:00,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:00,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:00,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132721363] [2022-01-10 07:11:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:00,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:00,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:00,110 INFO L87 Difference]: Start difference. First operand 2500 states and 3535 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 07:11:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:01,266 INFO L93 Difference]: Finished difference Result 6096 states and 9029 transitions. [2022-01-10 07:11:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:01,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:01,275 INFO L225 Difference]: With dead ends: 6096 [2022-01-10 07:11:01,275 INFO L226 Difference]: Without dead ends: 4744 [2022-01-10 07:11:01,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:01,278 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 5400 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5400 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:01,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5400 Valid, 2297 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 07:11:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2022-01-10 07:11:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 2508. [2022-01-10 07:11:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2507 states have (on average 1.4064619066613482) internal successors, (3526), 2507 states have internal predecessors, (3526), 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 07:11:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3526 transitions. [2022-01-10 07:11:01,369 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3526 transitions. Word has length 83 [2022-01-10 07:11:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:01,370 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 3526 transitions. [2022-01-10 07:11:01,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 07:11:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3526 transitions. [2022-01-10 07:11:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:01,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:01,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:01,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:01,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:01,582 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:01,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 914086248, now seen corresponding path program 1 times [2022-01-10 07:11:01,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:01,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907414905] [2022-01-10 07:11:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:01,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:01,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:01,584 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:01,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:11:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:02,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:02,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:02,387 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 07:11:02,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:02,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:02,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907414905] [2022-01-10 07:11:02,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907414905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:02,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:02,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:02,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273306655] [2022-01-10 07:11:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:02,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:02,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:02,389 INFO L87 Difference]: Start difference. First operand 2508 states and 3526 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:02,845 INFO L93 Difference]: Finished difference Result 3288 states and 4677 transitions. [2022-01-10 07:11:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:02,848 INFO L225 Difference]: With dead ends: 3288 [2022-01-10 07:11:02,848 INFO L226 Difference]: Without dead ends: 2509 [2022-01-10 07:11:02,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:02,850 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 47 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:02,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 2389 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 540 Invalid, 0 Unknown, 21 Unchecked, 0.4s Time] [2022-01-10 07:11:02,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-01-10 07:11:02,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2509. [2022-01-10 07:11:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2508 states have (on average 1.4062998405103668) internal successors, (3527), 2508 states have internal predecessors, (3527), 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 07:11:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3527 transitions. [2022-01-10 07:11:02,917 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3527 transitions. Word has length 83 [2022-01-10 07:11:02,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:02,917 INFO L470 AbstractCegarLoop]: Abstraction has 2509 states and 3527 transitions. [2022-01-10 07:11:02,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3527 transitions. [2022-01-10 07:11:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:02,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:02,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:02,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:03,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:03,146 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:03,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1537960407, now seen corresponding path program 1 times [2022-01-10 07:11:03,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:03,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602647750] [2022-01-10 07:11:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:03,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:03,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:03,148 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:03,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:11:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:03,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:03,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:03,884 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 07:11:03,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:03,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:03,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602647750] [2022-01-10 07:11:03,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602647750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:03,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:03,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:03,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964043404] [2022-01-10 07:11:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:03,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:03,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:03,886 INFO L87 Difference]: Start difference. First operand 2509 states and 3527 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 07:11:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:05,184 INFO L93 Difference]: Finished difference Result 8229 states and 12245 transitions. [2022-01-10 07:11:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:05,217 INFO L225 Difference]: With dead ends: 8229 [2022-01-10 07:11:05,217 INFO L226 Difference]: Without dead ends: 6977 [2022-01-10 07:11:05,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:05,219 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 5375 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5375 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:05,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5375 Valid, 2392 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 07:11:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2022-01-10 07:11:05,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 2545. [2022-01-10 07:11:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.3989779874213837) internal successors, (3559), 2544 states have internal predecessors, (3559), 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 07:11:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3559 transitions. [2022-01-10 07:11:05,330 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3559 transitions. Word has length 83 [2022-01-10 07:11:05,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:05,331 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 3559 transitions. [2022-01-10 07:11:05,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 07:11:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3559 transitions. [2022-01-10 07:11:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:05,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:05,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:05,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:05,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:05,543 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:05,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash -512284860, now seen corresponding path program 1 times [2022-01-10 07:11:05,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:05,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132491247] [2022-01-10 07:11:05,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:05,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:05,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:05,546 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:05,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:11:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:06,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:11:06,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:06,689 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 07:11:06,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:06,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:06,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132491247] [2022-01-10 07:11:06,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132491247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:06,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:06,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:11:06,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211974057] [2022-01-10 07:11:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:06,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:11:06,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:06,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:11:06,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:11:06,691 INFO L87 Difference]: Start difference. First operand 2545 states and 3559 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 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 07:11:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:07,146 INFO L93 Difference]: Finished difference Result 3341 states and 4765 transitions. [2022-01-10 07:11:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:11:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:07,163 INFO L225 Difference]: With dead ends: 3341 [2022-01-10 07:11:07,163 INFO L226 Difference]: Without dead ends: 2569 [2022-01-10 07:11:07,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:11:07,165 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 76 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:07,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 2536 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 527 Invalid, 0 Unknown, 64 Unchecked, 0.4s Time] [2022-01-10 07:11:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-01-10 07:11:07,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2565. [2022-01-10 07:11:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.3974258970358815) internal successors, (3583), 2564 states have internal predecessors, (3583), 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 07:11:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3583 transitions. [2022-01-10 07:11:07,247 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3583 transitions. Word has length 83 [2022-01-10 07:11:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:07,247 INFO L470 AbstractCegarLoop]: Abstraction has 2565 states and 3583 transitions. [2022-01-10 07:11:07,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 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 07:11:07,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3583 transitions. [2022-01-10 07:11:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:07,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:07,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:07,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:07,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:07,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:07,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:07,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1054085660, now seen corresponding path program 1 times [2022-01-10 07:11:07,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:07,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262084429] [2022-01-10 07:11:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:07,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:07,461 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:07,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:11:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:08,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:08,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:08,155 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 07:11:08,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:08,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:08,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262084429] [2022-01-10 07:11:08,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262084429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:08,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:08,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:08,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584325868] [2022-01-10 07:11:08,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:08,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:08,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:08,157 INFO L87 Difference]: Start difference. First operand 2565 states and 3583 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:08,347 INFO L93 Difference]: Finished difference Result 5745 states and 8192 transitions. [2022-01-10 07:11:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:08,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:08,353 INFO L225 Difference]: With dead ends: 5745 [2022-01-10 07:11:08,354 INFO L226 Difference]: Without dead ends: 4165 [2022-01-10 07:11:08,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 07:11:08,356 INFO L933 BasicCegarLoop]: 1942 mSDtfsCounter, 1211 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:08,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 2944 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:11:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2022-01-10 07:11:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4163. [2022-01-10 07:11:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 1.3947621335896203) internal successors, (5805), 4162 states have internal predecessors, (5805), 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 07:11:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 5805 transitions. [2022-01-10 07:11:08,509 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 5805 transitions. Word has length 83 [2022-01-10 07:11:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:08,510 INFO L470 AbstractCegarLoop]: Abstraction has 4163 states and 5805 transitions. [2022-01-10 07:11:08,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 5805 transitions. [2022-01-10 07:11:08,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:08,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:08,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:08,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-01-10 07:11:08,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:08,723 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:08,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:08,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1907932014, now seen corresponding path program 1 times [2022-01-10 07:11:08,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:08,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291474437] [2022-01-10 07:11:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:08,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:08,726 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:08,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:11:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:09,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:09,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:09,539 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 07:11:09,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:09,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:09,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291474437] [2022-01-10 07:11:09,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291474437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:09,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:09,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:09,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411371500] [2022-01-10 07:11:09,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:09,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:09,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:09,541 INFO L87 Difference]: Start difference. First operand 4163 states and 5805 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:10,450 INFO L93 Difference]: Finished difference Result 4904 states and 6903 transitions. [2022-01-10 07:11:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:10,456 INFO L225 Difference]: With dead ends: 4904 [2022-01-10 07:11:10,456 INFO L226 Difference]: Without dead ends: 4166 [2022-01-10 07:11:10,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:10,458 INFO L933 BasicCegarLoop]: 1454 mSDtfsCounter, 33 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 621 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:10,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3987 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 0 Unknown, 621 Unchecked, 0.7s Time] [2022-01-10 07:11:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2022-01-10 07:11:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 4164. [2022-01-10 07:11:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 4163 states have (on average 1.3946673072303628) internal successors, (5806), 4163 states have internal predecessors, (5806), 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 07:11:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 5806 transitions. [2022-01-10 07:11:10,604 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 5806 transitions. Word has length 83 [2022-01-10 07:11:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:10,604 INFO L470 AbstractCegarLoop]: Abstraction has 4164 states and 5806 transitions. [2022-01-10 07:11:10,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 5806 transitions. [2022-01-10 07:11:10,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:10,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:10,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:10,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:10,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:10,817 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash -252212747, now seen corresponding path program 1 times [2022-01-10 07:11:10,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:10,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432053576] [2022-01-10 07:11:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:10,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:10,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:10,819 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:10,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:11:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:11,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:11,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:11,648 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 07:11:11,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:11,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:11,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432053576] [2022-01-10 07:11:11,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432053576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:11,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:11,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:11,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148087010] [2022-01-10 07:11:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:11,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:11,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:11,650 INFO L87 Difference]: Start difference. First operand 4164 states and 5806 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:12,490 INFO L93 Difference]: Finished difference Result 5093 states and 7167 transitions. [2022-01-10 07:11:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:12,496 INFO L225 Difference]: With dead ends: 5093 [2022-01-10 07:11:12,496 INFO L226 Difference]: Without dead ends: 4165 [2022-01-10 07:11:12,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:12,498 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 33 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 584 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:12,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 4075 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1112 Invalid, 0 Unknown, 584 Unchecked, 0.7s Time] [2022-01-10 07:11:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2022-01-10 07:11:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4165. [2022-01-10 07:11:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 1.3945725264169069) internal successors, (5807), 4164 states have internal predecessors, (5807), 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 07:11:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5807 transitions. [2022-01-10 07:11:12,660 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5807 transitions. Word has length 83 [2022-01-10 07:11:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:12,661 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 5807 transitions. [2022-01-10 07:11:12,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5807 transitions. [2022-01-10 07:11:12,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:12,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:12,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:12,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:12,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:12,874 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash 469960707, now seen corresponding path program 1 times [2022-01-10 07:11:12,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:12,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282480118] [2022-01-10 07:11:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:12,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:12,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:12,877 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:12,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:11:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:13,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:11:13,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:13,716 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 07:11:13,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:13,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:13,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282480118] [2022-01-10 07:11:13,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282480118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:13,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:13,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:11:13,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337413310] [2022-01-10 07:11:13,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:13,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:11:13,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:13,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:11:13,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:11:13,718 INFO L87 Difference]: Start difference. First operand 4165 states and 5807 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:14,490 INFO L93 Difference]: Finished difference Result 5228 states and 7370 transitions. [2022-01-10 07:11:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:11:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:14,495 INFO L225 Difference]: With dead ends: 5228 [2022-01-10 07:11:14,495 INFO L226 Difference]: Without dead ends: 4145 [2022-01-10 07:11:14,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:14,497 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 39 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:14,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 3224 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1112 Invalid, 0 Unknown, 21 Unchecked, 0.6s Time] [2022-01-10 07:11:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2022-01-10 07:11:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4145. [2022-01-10 07:11:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 1.3952702702702702) internal successors, (5782), 4144 states have internal predecessors, (5782), 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 07:11:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 5782 transitions. [2022-01-10 07:11:14,705 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 5782 transitions. Word has length 83 [2022-01-10 07:11:14,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:14,705 INFO L470 AbstractCegarLoop]: Abstraction has 4145 states and 5782 transitions. [2022-01-10 07:11:14,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 07:11:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 5782 transitions. [2022-01-10 07:11:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:14,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:14,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:14,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:14,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:14,918 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:14,918 INFO L85 PathProgramCache]: Analyzing trace with hash 209888594, now seen corresponding path program 1 times [2022-01-10 07:11:14,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:14,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306217165] [2022-01-10 07:11:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:14,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:14,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:14,920 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:14,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:11:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:15,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:15,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:15,580 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 07:11:15,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:15,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:15,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306217165] [2022-01-10 07:11:15,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306217165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:15,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:15,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:15,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179428861] [2022-01-10 07:11:15,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:15,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:15,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:15,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:15,581 INFO L87 Difference]: Start difference. First operand 4145 states and 5782 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:15,878 INFO L93 Difference]: Finished difference Result 8876 states and 12668 transitions. [2022-01-10 07:11:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:15,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:15,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:15,886 INFO L225 Difference]: With dead ends: 8876 [2022-01-10 07:11:15,886 INFO L226 Difference]: Without dead ends: 6415 [2022-01-10 07:11:15,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 07:11:15,889 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 770 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:15,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2578 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:11:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6415 states. [2022-01-10 07:11:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6415 to 6413. [2022-01-10 07:11:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6413 states, 6412 states have (on average 1.3998752339363694) internal successors, (8976), 6412 states have internal predecessors, (8976), 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 07:11:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 8976 transitions. [2022-01-10 07:11:16,156 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 8976 transitions. Word has length 83 [2022-01-10 07:11:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:16,156 INFO L470 AbstractCegarLoop]: Abstraction has 6413 states and 8976 transitions. [2022-01-10 07:11:16,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 8976 transitions. [2022-01-10 07:11:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:16,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:16,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:16,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:16,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:16,370 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash -331912206, now seen corresponding path program 1 times [2022-01-10 07:11:16,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:16,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947170616] [2022-01-10 07:11:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:16,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:16,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:16,372 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:16,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:11:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:16,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:16,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:17,123 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 07:11:17,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:17,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:17,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947170616] [2022-01-10 07:11:17,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947170616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:17,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:17,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:17,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573598950] [2022-01-10 07:11:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:17,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:17,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:17,124 INFO L87 Difference]: Start difference. First operand 6413 states and 8976 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 07:11:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:19,147 INFO L93 Difference]: Finished difference Result 21459 states and 31108 transitions. [2022-01-10 07:11:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:11:19,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:19,168 INFO L225 Difference]: With dead ends: 21459 [2022-01-10 07:11:19,168 INFO L226 Difference]: Without dead ends: 18253 [2022-01-10 07:11:19,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:11:19,176 INFO L933 BasicCegarLoop]: 949 mSDtfsCounter, 5543 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:19,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5543 Valid, 2379 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 07:11:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18253 states. [2022-01-10 07:11:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18253 to 6335. [2022-01-10 07:11:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6335 states, 6334 states have (on average 1.392485001578781) internal successors, (8820), 6334 states have internal predecessors, (8820), 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 07:11:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6335 states to 6335 states and 8820 transitions. [2022-01-10 07:11:19,643 INFO L78 Accepts]: Start accepts. Automaton has 6335 states and 8820 transitions. Word has length 83 [2022-01-10 07:11:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:19,643 INFO L470 AbstractCegarLoop]: Abstraction has 6335 states and 8820 transitions. [2022-01-10 07:11:19,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 07:11:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 6335 states and 8820 transitions. [2022-01-10 07:11:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:19,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:19,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:19,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:19,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:19,857 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash -427759950, now seen corresponding path program 1 times [2022-01-10 07:11:19,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:19,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460533998] [2022-01-10 07:11:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:19,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:19,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:19,859 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:19,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:11:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:20,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:20,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:20,546 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 07:11:20,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:20,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:20,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460533998] [2022-01-10 07:11:20,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460533998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:20,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:20,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:20,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309633991] [2022-01-10 07:11:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:20,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:20,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:20,549 INFO L87 Difference]: Start difference. First operand 6335 states and 8820 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:21,144 INFO L93 Difference]: Finished difference Result 12630 states and 17763 transitions. [2022-01-10 07:11:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:21,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:21,157 INFO L225 Difference]: With dead ends: 12630 [2022-01-10 07:11:21,157 INFO L226 Difference]: Without dead ends: 9622 [2022-01-10 07:11:21,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 07:11:21,163 INFO L933 BasicCegarLoop]: 1310 mSDtfsCounter, 1283 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:21,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 1624 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:11:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9622 states. [2022-01-10 07:11:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9622 to 9604. [2022-01-10 07:11:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9604 states, 9603 states have (on average 1.417786108507758) internal successors, (13615), 9603 states have internal predecessors, (13615), 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 07:11:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9604 states to 9604 states and 13615 transitions. [2022-01-10 07:11:21,831 INFO L78 Accepts]: Start accepts. Automaton has 9604 states and 13615 transitions. Word has length 83 [2022-01-10 07:11:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:21,832 INFO L470 AbstractCegarLoop]: Abstraction has 9604 states and 13615 transitions. [2022-01-10 07:11:21,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 9604 states and 13615 transitions. [2022-01-10 07:11:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:21,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:21,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:21,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:22,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:22,048 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:22,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash 817386494, now seen corresponding path program 1 times [2022-01-10 07:11:22,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:22,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22944192] [2022-01-10 07:11:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:22,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:22,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:22,051 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:22,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:11:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:22,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:11:22,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:22,750 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 07:11:22,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:22,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:22,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22944192] [2022-01-10 07:11:22,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22944192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:22,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:22,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:11:22,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130706427] [2022-01-10 07:11:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:22,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:11:22,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:11:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:11:22,752 INFO L87 Difference]: Start difference. First operand 9604 states and 13615 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:11:23,770 INFO L93 Difference]: Finished difference Result 22392 states and 32224 transitions. [2022-01-10 07:11:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:11:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-10 07:11:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:11:23,786 INFO L225 Difference]: With dead ends: 22392 [2022-01-10 07:11:23,786 INFO L226 Difference]: Without dead ends: 15696 [2022-01-10 07:11:23,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 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 07:11:23,794 INFO L933 BasicCegarLoop]: 1493 mSDtfsCounter, 675 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:11:23,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 2459 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:11:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15696 states. [2022-01-10 07:11:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15696 to 15662. [2022-01-10 07:11:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15662 states, 15661 states have (on average 1.4223868207649575) internal successors, (22276), 15661 states have internal predecessors, (22276), 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 07:11:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15662 states to 15662 states and 22276 transitions. [2022-01-10 07:11:24,834 INFO L78 Accepts]: Start accepts. Automaton has 15662 states and 22276 transitions. Word has length 83 [2022-01-10 07:11:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:11:24,834 INFO L470 AbstractCegarLoop]: Abstraction has 15662 states and 22276 transitions. [2022-01-10 07:11:24,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:11:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 15662 states and 22276 transitions. [2022-01-10 07:11:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 07:11:24,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:11:24,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:11:24,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:11:25,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:11:25,048 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:11:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:11:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash -784930895, now seen corresponding path program 1 times [2022-01-10 07:11:25,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:11:25,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700106945] [2022-01-10 07:11:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:11:25,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:11:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:11:25,050 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:11:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:11:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:11:25,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:11:25,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:11:25,811 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 07:11:25,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:11:25,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:11:25,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700106945] [2022-01-10 07:11:25,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700106945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:11:25,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:11:25,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:11:25,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83814734] [2022-01-10 07:11:25,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:11:25,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:11:25,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:11:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:11:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:11:25,812 INFO L87 Difference]: Start difference. First operand 15662 states and 22276 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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)