./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:10:21,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:10:21,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:10:21,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:10:21,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:10:21,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:10:21,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:10:21,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:10:21,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:10:21,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:10:21,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:10:21,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:10:21,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:10:21,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:10:21,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:10:21,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:10:21,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:10:21,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:10:21,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:10:21,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:10:21,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:10:21,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:10:21,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:10:21,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:10:21,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:10:21,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:10:21,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:10:21,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:10:21,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:10:21,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:10:21,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:10:21,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:10:21,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:10:21,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:10:21,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:10:21,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:10:21,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:10:21,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:10:21,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:10:21,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:10:21,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:10:21,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:10:21,443 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:10:21,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:10:21,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:10:21,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:10:21,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:10:21,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:10:21,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:10:21,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:10:21,447 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:10:21,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:10:21,448 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:10:21,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:10:21,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:10:21,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:10:21,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:10:21,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:10:21,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:10:21,449 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:10:21,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:10:21,450 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:10:21,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:10:21,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:10:21,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:10:21,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:10:21,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:10:21,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:10:21,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:10:21,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:10:21,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:10:21,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:10:21,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:10:21,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:10:21,452 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:10:21,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:10:21,452 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:10:21,453 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:10:21,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:10:21,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:10:21,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:10:21,797 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:10:21,797 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:10:21,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-08-30 23:10:23,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:10:23,342 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:10:23,342 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-08-30 23:10:23,353 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f4b86cc/44e79d92bbb7450ea1adfc1e88a8cfbc/FLAG422216dbf [2023-08-30 23:10:23,366 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f4b86cc/44e79d92bbb7450ea1adfc1e88a8cfbc [2023-08-30 23:10:23,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:10:23,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:10:23,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:10:23,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:10:23,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:10:23,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35289436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23, skipping insertion in model container [2023-08-30 23:10:23,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:10:23,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:10:23,532 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] [2023-08-30 23:10:23,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:10:23,693 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:10:23,709 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] [2023-08-30 23:10:23,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:10:23,841 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:10:23,842 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:10:23,847 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:10:23,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23 WrapperNode [2023-08-30 23:10:23,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:10:23,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:10:23,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:10:23,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:10:23,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,891 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2023-08-30 23:10:23,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:10:23,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:10:23,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:10:23,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:10:23,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:10:23,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:10:23,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:10:23,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:10:23,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (1/1) ... [2023-08-30 23:10:23,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:10:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:10:23,994 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) [2023-08-30 23:10:24,018 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 [2023-08-30 23:10:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:10:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:10:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:10:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:10:24,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:10:24,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:10:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:10:24,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 23:10:24,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 23:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:10:24,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:10:24,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:10:24,035 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:10:24,180 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:10:24,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:10:24,495 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:10:24,700 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:10:24,705 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:10:24,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:10:24 BoogieIcfgContainer [2023-08-30 23:10:24,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:10:24,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:10:24,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:10:24,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:10:24,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:10:23" (1/3) ... [2023-08-30 23:10:24,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6cbe03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:10:24, skipping insertion in model container [2023-08-30 23:10:24,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:10:23" (2/3) ... [2023-08-30 23:10:24,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6cbe03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:10:24, skipping insertion in model container [2023-08-30 23:10:24,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:10:24" (3/3) ... [2023-08-30 23:10:24,723 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2023-08-30 23:10:24,729 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:10:24,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:10:24,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 23:10:24,736 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:10:24,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:10:24,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2023-08-30 23:10:24,889 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-08-30 23:10:24,892 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:10:24,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-08-30 23:10:24,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2023-08-30 23:10:24,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2023-08-30 23:10:24,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:10:24,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2023-08-30 23:10:24,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2023-08-30 23:10:24,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2023-08-30 23:10:24,974 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-08-30 23:10:24,975 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:10:24,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-08-30 23:10:24,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 2986 [2023-08-30 23:10:28,790 INFO L134 LiptonReduction]: Checked pairs total: 8489 [2023-08-30 23:10:28,791 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 23:10:28,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:10:28,821 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66634662, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:10:28,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 23:10:28,834 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-30 23:10:28,834 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:10:28,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:28,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:28,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:28,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1745103999, now seen corresponding path program 1 times [2023-08-30 23:10:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520803275] [2023-08-30 23:10:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:28,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:29,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:29,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520803275] [2023-08-30 23:10:29,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520803275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:29,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:29,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:10:29,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784467568] [2023-08-30 23:10:29,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:29,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:10:29,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:29,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:10:29,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:10:29,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 235 [2023-08-30 23:10:29,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2023-08-30 23:10:29,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:29,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 235 [2023-08-30 23:10:29,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:30,067 INFO L130 PetriNetUnfolder]: 3975/5715 cut-off events. [2023-08-30 23:10:30,067 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 23:10:30,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11295 conditions, 5715 events. 3975/5715 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30661 event pairs, 1089 based on Foata normal form. 192/5483 useless extension candidates. Maximal degree in co-relation 11283. Up to 4303 conditions per place. [2023-08-30 23:10:30,104 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 35 selfloop transitions, 2 changer transitions 4/46 dead transitions. [2023-08-30 23:10:30,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 189 flow [2023-08-30 23:10:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:10:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:10:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-08-30 23:10:30,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475177304964539 [2023-08-30 23:10:30,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-08-30 23:10:30,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-08-30 23:10:30,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:30,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-08-30 23:10:30,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-08-30 23:10:30,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2023-08-30 23:10:30,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2023-08-30 23:10:30,139 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 386 transitions. [2023-08-30 23:10:30,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 189 flow [2023-08-30 23:10:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 23:10:30,149 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 68 flow [2023-08-30 23:10:30,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-08-30 23:10:30,156 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-08-30 23:10:30,157 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 68 flow [2023-08-30 23:10:30,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2023-08-30 23:10:30,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:30,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:30,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:10:30,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:30,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2095058766, now seen corresponding path program 1 times [2023-08-30 23:10:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:30,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831710834] [2023-08-30 23:10:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:31,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831710834] [2023-08-30 23:10:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831710834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:31,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:31,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:10:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705235903] [2023-08-30 23:10:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:31,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:10:31,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:31,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:10:31,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:10:31,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:10:31,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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) [2023-08-30 23:10:31,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:31,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:10:31,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:32,620 INFO L130 PetriNetUnfolder]: 9959/13683 cut-off events. [2023-08-30 23:10:32,621 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2023-08-30 23:10:32,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28305 conditions, 13683 events. 9959/13683 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 69874 event pairs, 2087 based on Foata normal form. 640/14319 useless extension candidates. Maximal degree in co-relation 28295. Up to 7441 conditions per place. [2023-08-30 23:10:32,689 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 42 selfloop transitions, 11 changer transitions 38/92 dead transitions. [2023-08-30 23:10:32,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 388 flow [2023-08-30 23:10:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:10:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:10:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2023-08-30 23:10:32,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869300911854103 [2023-08-30 23:10:32,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2023-08-30 23:10:32,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2023-08-30 23:10:32,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:32,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2023-08-30 23:10:32,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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) [2023-08-30 23:10:32,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:32,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:32,699 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 68 flow. Second operand 7 states and 801 transitions. [2023-08-30 23:10:32,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 388 flow [2023-08-30 23:10:32,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 92 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:10:32,705 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 170 flow [2023-08-30 23:10:32,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-30 23:10:32,706 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-08-30 23:10:32,706 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 170 flow [2023-08-30 23:10:32,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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) [2023-08-30 23:10:32,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:32,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:32,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:10:32,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:32,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:32,709 INFO L85 PathProgramCache]: Analyzing trace with hash -892731973, now seen corresponding path program 1 times [2023-08-30 23:10:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:32,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798796458] [2023-08-30 23:10:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:32,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:33,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:33,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798796458] [2023-08-30 23:10:33,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798796458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:33,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:33,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:10:33,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155675020] [2023-08-30 23:10:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:33,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:10:33,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:10:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:10:33,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:10:33,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2023-08-30 23:10:33,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:33,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:10:33,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:34,872 INFO L130 PetriNetUnfolder]: 9610/13697 cut-off events. [2023-08-30 23:10:34,872 INFO L131 PetriNetUnfolder]: For 15342/15342 co-relation queries the response was YES. [2023-08-30 23:10:34,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42610 conditions, 13697 events. 9610/13697 cut-off events. For 15342/15342 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 76575 event pairs, 1155 based on Foata normal form. 478/14175 useless extension candidates. Maximal degree in co-relation 42594. Up to 8997 conditions per place. [2023-08-30 23:10:34,953 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 54 selfloop transitions, 21 changer transitions 35/111 dead transitions. [2023-08-30 23:10:34,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 111 transitions, 710 flow [2023-08-30 23:10:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:10:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:10:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 812 transitions. [2023-08-30 23:10:34,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2023-08-30 23:10:34,956 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 812 transitions. [2023-08-30 23:10:34,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 812 transitions. [2023-08-30 23:10:34,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:34,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 812 transitions. [2023-08-30 23:10:34,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2023-08-30 23:10:34,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:34,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:34,963 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 170 flow. Second operand 7 states and 812 transitions. [2023-08-30 23:10:34,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 111 transitions, 710 flow [2023-08-30 23:10:35,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 111 transitions, 698 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 23:10:35,122 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 308 flow [2023-08-30 23:10:35,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-30 23:10:35,123 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-08-30 23:10:35,123 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 308 flow [2023-08-30 23:10:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2023-08-30 23:10:35,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:35,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:35,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:10:35,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:35,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:35,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1904936741, now seen corresponding path program 1 times [2023-08-30 23:10:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693857774] [2023-08-30 23:10:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:35,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693857774] [2023-08-30 23:10:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693857774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:35,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:35,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:10:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773512396] [2023-08-30 23:10:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:10:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:10:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:10:35,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 235 [2023-08-30 23:10:35,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 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) [2023-08-30 23:10:35,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:35,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 235 [2023-08-30 23:10:35,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:36,838 INFO L130 PetriNetUnfolder]: 9382/13573 cut-off events. [2023-08-30 23:10:36,838 INFO L131 PetriNetUnfolder]: For 28075/28446 co-relation queries the response was YES. [2023-08-30 23:10:36,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 13573 events. 9382/13573 cut-off events. For 28075/28446 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 79275 event pairs, 2694 based on Foata normal form. 587/13660 useless extension candidates. Maximal degree in co-relation 50727. Up to 10005 conditions per place. [2023-08-30 23:10:36,938 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 53 selfloop transitions, 5 changer transitions 25/94 dead transitions. [2023-08-30 23:10:36,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 738 flow [2023-08-30 23:10:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:10:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:10:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-08-30 23:10:36,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531063829787234 [2023-08-30 23:10:36,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-08-30 23:10:36,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-08-30 23:10:36,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:36,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-08-30 23:10:36,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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) [2023-08-30 23:10:36,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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) [2023-08-30 23:10:36,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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) [2023-08-30 23:10:36,948 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 308 flow. Second operand 5 states and 624 transitions. [2023-08-30 23:10:36,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 738 flow [2023-08-30 23:10:37,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 728 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 23:10:37,413 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 361 flow [2023-08-30 23:10:37,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-08-30 23:10:37,414 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-08-30 23:10:37,415 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 361 flow [2023-08-30 23:10:37,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 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) [2023-08-30 23:10:37,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:37,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:37,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:10:37,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:37,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1592797087, now seen corresponding path program 1 times [2023-08-30 23:10:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:37,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186045798] [2023-08-30 23:10:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:37,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186045798] [2023-08-30 23:10:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186045798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:37,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:37,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:10:37,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886140093] [2023-08-30 23:10:37,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:37,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:10:37,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:10:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:10:37,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 235 [2023-08-30 23:10:37,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2023-08-30 23:10:37,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:37,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 235 [2023-08-30 23:10:37,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:38,803 INFO L130 PetriNetUnfolder]: 9150/13312 cut-off events. [2023-08-30 23:10:38,803 INFO L131 PetriNetUnfolder]: For 29963/30194 co-relation queries the response was YES. [2023-08-30 23:10:38,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52731 conditions, 13312 events. 9150/13312 cut-off events. For 29963/30194 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 77837 event pairs, 1727 based on Foata normal form. 504/13434 useless extension candidates. Maximal degree in co-relation 52709. Up to 8735 conditions per place. [2023-08-30 23:10:38,895 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 63 selfloop transitions, 19 changer transitions 22/115 dead transitions. [2023-08-30 23:10:38,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 115 transitions, 958 flow [2023-08-30 23:10:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:10:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:10:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 742 transitions. [2023-08-30 23:10:38,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526241134751773 [2023-08-30 23:10:38,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 742 transitions. [2023-08-30 23:10:38,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 742 transitions. [2023-08-30 23:10:38,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:38,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 742 transitions. [2023-08-30 23:10:38,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 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) [2023-08-30 23:10:38,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:10:38,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:10:38,905 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 361 flow. Second operand 6 states and 742 transitions. [2023-08-30 23:10:38,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 115 transitions, 958 flow [2023-08-30 23:10:39,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 115 transitions, 949 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 23:10:39,043 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 525 flow [2023-08-30 23:10:39,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-08-30 23:10:39,045 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-08-30 23:10:39,045 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 525 flow [2023-08-30 23:10:39,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2023-08-30 23:10:39,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:39,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:39,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:10:39,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:39,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash -65965793, now seen corresponding path program 2 times [2023-08-30 23:10:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071011604] [2023-08-30 23:10:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:39,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:39,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071011604] [2023-08-30 23:10:39,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071011604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:10:39,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682245369] [2023-08-30 23:10:39,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:39,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:10:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:10:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:10:39,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 23:10:39,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 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) [2023-08-30 23:10:39,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:39,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 23:10:39,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:40,955 INFO L130 PetriNetUnfolder]: 9194/13338 cut-off events. [2023-08-30 23:10:40,956 INFO L131 PetriNetUnfolder]: For 44857/45303 co-relation queries the response was YES. [2023-08-30 23:10:40,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57191 conditions, 13338 events. 9194/13338 cut-off events. For 44857/45303 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 77005 event pairs, 1933 based on Foata normal form. 730/13700 useless extension candidates. Maximal degree in co-relation 57166. Up to 8803 conditions per place. [2023-08-30 23:10:41,033 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 65 selfloop transitions, 24 changer transitions 31/131 dead transitions. [2023-08-30 23:10:41,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 131 transitions, 1254 flow [2023-08-30 23:10:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:10:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:10:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 840 transitions. [2023-08-30 23:10:41,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-08-30 23:10:41,047 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 840 transitions. [2023-08-30 23:10:41,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 840 transitions. [2023-08-30 23:10:41,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:41,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 840 transitions. [2023-08-30 23:10:41,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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) [2023-08-30 23:10:41,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:41,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:41,059 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 525 flow. Second operand 7 states and 840 transitions. [2023-08-30 23:10:41,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 131 transitions, 1254 flow [2023-08-30 23:10:41,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 1219 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 23:10:41,273 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 682 flow [2023-08-30 23:10:41,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-30 23:10:41,274 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2023-08-30 23:10:41,274 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 682 flow [2023-08-30 23:10:41,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 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) [2023-08-30 23:10:41,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:41,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:41,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:10:41,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:41,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1594971830, now seen corresponding path program 1 times [2023-08-30 23:10:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:41,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650273145] [2023-08-30 23:10:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:42,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:42,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650273145] [2023-08-30 23:10:42,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650273145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:42,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:42,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:10:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689772587] [2023-08-30 23:10:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:42,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:10:42,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:42,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:10:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:10:42,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 235 [2023-08-30 23:10:42,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 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) [2023-08-30 23:10:42,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:42,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 235 [2023-08-30 23:10:42,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:43,673 INFO L130 PetriNetUnfolder]: 12828/17645 cut-off events. [2023-08-30 23:10:43,673 INFO L131 PetriNetUnfolder]: For 68483/68483 co-relation queries the response was YES. [2023-08-30 23:10:43,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78657 conditions, 17645 events. 12828/17645 cut-off events. For 68483/68483 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 92012 event pairs, 1231 based on Foata normal form. 476/18121 useless extension candidates. Maximal degree in co-relation 78629. Up to 10497 conditions per place. [2023-08-30 23:10:43,770 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 100 selfloop transitions, 53 changer transitions 46/199 dead transitions. [2023-08-30 23:10:43,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 199 transitions, 1999 flow [2023-08-30 23:10:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:10:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:10:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 908 transitions. [2023-08-30 23:10:43,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829787234042553 [2023-08-30 23:10:43,774 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 908 transitions. [2023-08-30 23:10:43,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 908 transitions. [2023-08-30 23:10:43,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:43,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 908 transitions. [2023-08-30 23:10:43,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.5) internal successors, (908), 8 states have internal predecessors, (908), 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) [2023-08-30 23:10:43,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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) [2023-08-30 23:10:43,780 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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) [2023-08-30 23:10:43,781 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 682 flow. Second operand 8 states and 908 transitions. [2023-08-30 23:10:43,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 199 transitions, 1999 flow [2023-08-30 23:10:44,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 199 transitions, 1967 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 23:10:44,047 INFO L231 Difference]: Finished difference. Result has 71 places, 100 transitions, 1233 flow [2023-08-30 23:10:44,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1233, PETRI_PLACES=71, PETRI_TRANSITIONS=100} [2023-08-30 23:10:44,048 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-08-30 23:10:44,048 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 100 transitions, 1233 flow [2023-08-30 23:10:44,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 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) [2023-08-30 23:10:44,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:44,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:44,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:10:44,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:44,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:44,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2145388558, now seen corresponding path program 1 times [2023-08-30 23:10:44,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:44,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329108478] [2023-08-30 23:10:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:44,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329108478] [2023-08-30 23:10:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329108478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:10:44,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101717028] [2023-08-30 23:10:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:10:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:10:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:10:45,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 23:10:45,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 100 transitions, 1233 flow. Second operand has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 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) [2023-08-30 23:10:45,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:45,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 23:10:45,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:46,498 INFO L130 PetriNetUnfolder]: 10058/14406 cut-off events. [2023-08-30 23:10:46,499 INFO L131 PetriNetUnfolder]: For 107839/108560 co-relation queries the response was YES. [2023-08-30 23:10:46,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79820 conditions, 14406 events. 10058/14406 cut-off events. For 107839/108560 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 82075 event pairs, 1558 based on Foata normal form. 670/14589 useless extension candidates. Maximal degree in co-relation 79787. Up to 9865 conditions per place. [2023-08-30 23:10:46,595 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 92 selfloop transitions, 24 changer transitions 24/162 dead transitions. [2023-08-30 23:10:46,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 162 transitions, 2053 flow [2023-08-30 23:10:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:10:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:10:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2023-08-30 23:10:46,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094224924012158 [2023-08-30 23:10:46,599 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2023-08-30 23:10:46,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2023-08-30 23:10:46,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:46,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2023-08-30 23:10:46,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 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) [2023-08-30 23:10:46,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:46,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:10:46,604 INFO L175 Difference]: Start difference. First operand has 71 places, 100 transitions, 1233 flow. Second operand 7 states and 838 transitions. [2023-08-30 23:10:46,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 162 transitions, 2053 flow [2023-08-30 23:10:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 162 transitions, 2032 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 23:10:46,733 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 1368 flow [2023-08-30 23:10:46,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1368, PETRI_PLACES=77, PETRI_TRANSITIONS=104} [2023-08-30 23:10:46,735 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2023-08-30 23:10:46,735 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 1368 flow [2023-08-30 23:10:46,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 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) [2023-08-30 23:10:46,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:46,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:10:46,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:46,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2133723940, now seen corresponding path program 1 times [2023-08-30 23:10:46,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:46,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169069230] [2023-08-30 23:10:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169069230] [2023-08-30 23:10:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169069230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:47,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:47,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:10:47,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254475320] [2023-08-30 23:10:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:47,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:10:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:10:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:10:47,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 23:10:47,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 104 transitions, 1368 flow. Second operand has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 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) [2023-08-30 23:10:47,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:47,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 23:10:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:48,897 INFO L130 PetriNetUnfolder]: 10645/15218 cut-off events. [2023-08-30 23:10:48,897 INFO L131 PetriNetUnfolder]: For 139048/139812 co-relation queries the response was YES. [2023-08-30 23:10:48,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88802 conditions, 15218 events. 10645/15218 cut-off events. For 139048/139812 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 86681 event pairs, 2063 based on Foata normal form. 711/15519 useless extension candidates. Maximal degree in co-relation 88764. Up to 10143 conditions per place. [2023-08-30 23:10:49,006 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 92 selfloop transitions, 39 changer transitions 12/165 dead transitions. [2023-08-30 23:10:49,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 165 transitions, 2222 flow [2023-08-30 23:10:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:10:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:10:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 727 transitions. [2023-08-30 23:10:49,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156028368794326 [2023-08-30 23:10:49,009 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 727 transitions. [2023-08-30 23:10:49,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 727 transitions. [2023-08-30 23:10:49,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:49,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 727 transitions. [2023-08-30 23:10:49,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 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) [2023-08-30 23:10:49,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:10:49,013 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:10:49,014 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 1368 flow. Second operand 6 states and 727 transitions. [2023-08-30 23:10:49,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 165 transitions, 2222 flow [2023-08-30 23:10:49,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 2160 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-08-30 23:10:49,315 INFO L231 Difference]: Finished difference. Result has 76 places, 115 transitions, 1612 flow [2023-08-30 23:10:49,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1612, PETRI_PLACES=76, PETRI_TRANSITIONS=115} [2023-08-30 23:10:49,316 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2023-08-30 23:10:49,316 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 115 transitions, 1612 flow [2023-08-30 23:10:49,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 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) [2023-08-30 23:10:49,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:49,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:49,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:10:49,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:49,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash -664159116, now seen corresponding path program 2 times [2023-08-30 23:10:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725796379] [2023-08-30 23:10:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:49,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725796379] [2023-08-30 23:10:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725796379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:10:49,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819476911] [2023-08-30 23:10:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:49,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:10:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:10:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:10:49,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:10:49,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 115 transitions, 1612 flow. Second operand has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 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) [2023-08-30 23:10:49,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:49,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:10:49,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:51,488 INFO L130 PetriNetUnfolder]: 11733/16834 cut-off events. [2023-08-30 23:10:51,488 INFO L131 PetriNetUnfolder]: For 160757/161571 co-relation queries the response was YES. [2023-08-30 23:10:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100140 conditions, 16834 events. 11733/16834 cut-off events. For 160757/161571 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 98555 event pairs, 2125 based on Foata normal form. 860/17176 useless extension candidates. Maximal degree in co-relation 100103. Up to 8738 conditions per place. [2023-08-30 23:10:51,602 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 91 selfloop transitions, 52 changer transitions 31/196 dead transitions. [2023-08-30 23:10:51,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 196 transitions, 2780 flow [2023-08-30 23:10:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:10:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:10:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 970 transitions. [2023-08-30 23:10:51,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2023-08-30 23:10:51,605 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 970 transitions. [2023-08-30 23:10:51,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 970 transitions. [2023-08-30 23:10:51,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:51,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 970 transitions. [2023-08-30 23:10:51,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.25) internal successors, (970), 8 states have internal predecessors, (970), 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) [2023-08-30 23:10:51,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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) [2023-08-30 23:10:51,612 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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) [2023-08-30 23:10:51,612 INFO L175 Difference]: Start difference. First operand has 76 places, 115 transitions, 1612 flow. Second operand 8 states and 970 transitions. [2023-08-30 23:10:51,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 196 transitions, 2780 flow [2023-08-30 23:10:51,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 196 transitions, 2661 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-30 23:10:51,791 INFO L231 Difference]: Finished difference. Result has 83 places, 123 transitions, 1855 flow [2023-08-30 23:10:51,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1855, PETRI_PLACES=83, PETRI_TRANSITIONS=123} [2023-08-30 23:10:51,792 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2023-08-30 23:10:51,792 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 123 transitions, 1855 flow [2023-08-30 23:10:51,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 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) [2023-08-30 23:10:51,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:51,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:51,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:10:51,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:51,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1720442247, now seen corresponding path program 1 times [2023-08-30 23:10:51,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:51,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582845846] [2023-08-30 23:10:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:51,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:52,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582845846] [2023-08-30 23:10:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582845846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:52,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:52,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:10:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963910356] [2023-08-30 23:10:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:52,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:10:52,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:10:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:10:52,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 23:10:52,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 123 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 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) [2023-08-30 23:10:52,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:52,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 23:10:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:54,448 INFO L130 PetriNetUnfolder]: 12089/17344 cut-off events. [2023-08-30 23:10:54,448 INFO L131 PetriNetUnfolder]: For 199308/200050 co-relation queries the response was YES. [2023-08-30 23:10:54,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108990 conditions, 17344 events. 12089/17344 cut-off events. For 199308/200050 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 102257 event pairs, 2223 based on Foata normal form. 561/17297 useless extension candidates. Maximal degree in co-relation 108949. Up to 11405 conditions per place. [2023-08-30 23:10:54,585 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 102 selfloop transitions, 44 changer transitions 10/178 dead transitions. [2023-08-30 23:10:54,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 178 transitions, 2686 flow [2023-08-30 23:10:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:10:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:10:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2023-08-30 23:10:54,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2023-08-30 23:10:54,587 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2023-08-30 23:10:54,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2023-08-30 23:10:54,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:54,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2023-08-30 23:10:54,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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) [2023-08-30 23:10:54,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:10:54,592 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:10:54,592 INFO L175 Difference]: Start difference. First operand has 83 places, 123 transitions, 1855 flow. Second operand 6 states and 725 transitions. [2023-08-30 23:10:54,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 178 transitions, 2686 flow [2023-08-30 23:10:54,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 2581 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-30 23:10:54,992 INFO L231 Difference]: Finished difference. Result has 81 places, 131 transitions, 2029 flow [2023-08-30 23:10:54,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2029, PETRI_PLACES=81, PETRI_TRANSITIONS=131} [2023-08-30 23:10:54,993 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-08-30 23:10:54,993 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 131 transitions, 2029 flow [2023-08-30 23:10:54,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 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) [2023-08-30 23:10:54,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:54,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:54,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:10:54,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:54,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash 874775161, now seen corresponding path program 2 times [2023-08-30 23:10:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868368286] [2023-08-30 23:10:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:54,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:55,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868368286] [2023-08-30 23:10:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868368286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:55,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:10:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995760901] [2023-08-30 23:10:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:10:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:10:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:10:55,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 235 [2023-08-30 23:10:55,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 131 transitions, 2029 flow. Second operand has 8 states, 8 states have (on average 101.25) internal successors, (810), 8 states have internal predecessors, (810), 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) [2023-08-30 23:10:55,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:10:55,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 235 [2023-08-30 23:10:55,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:10:58,291 INFO L130 PetriNetUnfolder]: 16353/22510 cut-off events. [2023-08-30 23:10:58,291 INFO L131 PetriNetUnfolder]: For 209669/209669 co-relation queries the response was YES. [2023-08-30 23:10:58,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134094 conditions, 22510 events. 16353/22510 cut-off events. For 209669/209669 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 122392 event pairs, 1419 based on Foata normal form. 240/22750 useless extension candidates. Maximal degree in co-relation 134054. Up to 12981 conditions per place. [2023-08-30 23:10:58,464 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 127 selfloop transitions, 127 changer transitions 32/286 dead transitions. [2023-08-30 23:10:58,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 286 transitions, 4158 flow [2023-08-30 23:10:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 23:10:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 23:10:58,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1136 transitions. [2023-08-30 23:10:58,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48340425531914893 [2023-08-30 23:10:58,467 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1136 transitions. [2023-08-30 23:10:58,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1136 transitions. [2023-08-30 23:10:58,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:10:58,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1136 transitions. [2023-08-30 23:10:58,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 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) [2023-08-30 23:10:58,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 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) [2023-08-30 23:10:58,473 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 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) [2023-08-30 23:10:58,473 INFO L175 Difference]: Start difference. First operand has 81 places, 131 transitions, 2029 flow. Second operand 10 states and 1136 transitions. [2023-08-30 23:10:58,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 286 transitions, 4158 flow [2023-08-30 23:10:58,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 4048 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 23:10:58,818 INFO L231 Difference]: Finished difference. Result has 93 places, 189 transitions, 3325 flow [2023-08-30 23:10:58,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=93, PETRI_TRANSITIONS=189} [2023-08-30 23:10:58,819 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2023-08-30 23:10:58,819 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 189 transitions, 3325 flow [2023-08-30 23:10:58,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.25) internal successors, (810), 8 states have internal predecessors, (810), 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) [2023-08-30 23:10:58,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:10:58,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:10:58,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:10:58,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:10:58,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:10:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1408889429, now seen corresponding path program 3 times [2023-08-30 23:10:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:10:58,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675361050] [2023-08-30 23:10:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:10:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:10:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:10:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:10:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:10:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675361050] [2023-08-30 23:10:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675361050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:10:59,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:10:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:10:59,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661051465] [2023-08-30 23:10:59,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:10:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:10:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:10:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:10:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:11:00,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 235 [2023-08-30 23:11:00,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 189 transitions, 3325 flow. Second operand has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 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) [2023-08-30 23:11:00,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:00,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 235 [2023-08-30 23:11:00,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:02,438 INFO L130 PetriNetUnfolder]: 15730/21788 cut-off events. [2023-08-30 23:11:02,438 INFO L131 PetriNetUnfolder]: For 299346/299912 co-relation queries the response was YES. [2023-08-30 23:11:02,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150182 conditions, 21788 events. 15730/21788 cut-off events. For 299346/299912 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 122824 event pairs, 1779 based on Foata normal form. 521/21760 useless extension candidates. Maximal degree in co-relation 150135. Up to 15142 conditions per place. [2023-08-30 23:11:02,586 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 186 selfloop transitions, 82 changer transitions 26/313 dead transitions. [2023-08-30 23:11:02,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 313 transitions, 5418 flow [2023-08-30 23:11:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:11:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:11:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1032 transitions. [2023-08-30 23:11:02,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879432624113475 [2023-08-30 23:11:02,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1032 transitions. [2023-08-30 23:11:02,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1032 transitions. [2023-08-30 23:11:02,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:02,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1032 transitions. [2023-08-30 23:11:02,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.66666666666667) internal successors, (1032), 9 states have internal predecessors, (1032), 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) [2023-08-30 23:11:02,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2023-08-30 23:11:02,594 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2023-08-30 23:11:02,594 INFO L175 Difference]: Start difference. First operand has 93 places, 189 transitions, 3325 flow. Second operand 9 states and 1032 transitions. [2023-08-30 23:11:02,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 313 transitions, 5418 flow [2023-08-30 23:11:03,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 313 transitions, 5095 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-08-30 23:11:03,465 INFO L231 Difference]: Finished difference. Result has 100 places, 216 transitions, 3843 flow [2023-08-30 23:11:03,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3843, PETRI_PLACES=100, PETRI_TRANSITIONS=216} [2023-08-30 23:11:03,466 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2023-08-30 23:11:03,466 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 216 transitions, 3843 flow [2023-08-30 23:11:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 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) [2023-08-30 23:11:03,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:03,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:03,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 23:11:03,467 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:03,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash -922116229, now seen corresponding path program 4 times [2023-08-30 23:11:03,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:03,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661949064] [2023-08-30 23:11:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:04,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:04,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661949064] [2023-08-30 23:11:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661949064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:04,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:11:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323387527] [2023-08-30 23:11:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:04,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:11:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:11:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:11:04,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:11:04,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 216 transitions, 3843 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2023-08-30 23:11:04,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:04,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:11:04,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:07,593 INFO L130 PetriNetUnfolder]: 16768/24302 cut-off events. [2023-08-30 23:11:07,594 INFO L131 PetriNetUnfolder]: For 378924/380345 co-relation queries the response was YES. [2023-08-30 23:11:07,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174542 conditions, 24302 events. 16768/24302 cut-off events. For 378924/380345 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 154903 event pairs, 2481 based on Foata normal form. 686/23894 useless extension candidates. Maximal degree in co-relation 174490. Up to 12191 conditions per place. [2023-08-30 23:11:07,883 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 147 selfloop transitions, 74 changer transitions 12/289 dead transitions. [2023-08-30 23:11:07,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 289 transitions, 5281 flow [2023-08-30 23:11:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:11:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:11:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 845 transitions. [2023-08-30 23:11:07,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2023-08-30 23:11:07,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 845 transitions. [2023-08-30 23:11:07,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 845 transitions. [2023-08-30 23:11:07,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:07,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 845 transitions. [2023-08-30 23:11:07,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 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) [2023-08-30 23:11:07,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:11:07,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:11:07,891 INFO L175 Difference]: Start difference. First operand has 100 places, 216 transitions, 3843 flow. Second operand 7 states and 845 transitions. [2023-08-30 23:11:07,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 289 transitions, 5281 flow [2023-08-30 23:11:08,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 289 transitions, 5023 flow, removed 77 selfloop flow, removed 8 redundant places. [2023-08-30 23:11:08,817 INFO L231 Difference]: Finished difference. Result has 99 places, 238 transitions, 4341 flow [2023-08-30 23:11:08,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4341, PETRI_PLACES=99, PETRI_TRANSITIONS=238} [2023-08-30 23:11:08,818 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2023-08-30 23:11:08,818 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 238 transitions, 4341 flow [2023-08-30 23:11:08,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2023-08-30 23:11:08,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:08,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:08,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 23:11:08,819 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:08,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash 628459863, now seen corresponding path program 5 times [2023-08-30 23:11:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:08,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275706578] [2023-08-30 23:11:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:08,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:09,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:09,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275706578] [2023-08-30 23:11:09,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275706578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:09,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:09,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:11:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344345725] [2023-08-30 23:11:09,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:09,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:11:09,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:11:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:11:09,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:11:09,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 238 transitions, 4341 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2023-08-30 23:11:09,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:09,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:11:09,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:13,137 INFO L130 PetriNetUnfolder]: 17220/25147 cut-off events. [2023-08-30 23:11:13,138 INFO L131 PetriNetUnfolder]: For 374028/375819 co-relation queries the response was YES. [2023-08-30 23:11:13,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179110 conditions, 25147 events. 17220/25147 cut-off events. For 374028/375819 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 162322 event pairs, 2996 based on Foata normal form. 883/24979 useless extension candidates. Maximal degree in co-relation 179060. Up to 12288 conditions per place. [2023-08-30 23:11:13,345 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 180 selfloop transitions, 104 changer transitions 23/363 dead transitions. [2023-08-30 23:11:13,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 363 transitions, 6939 flow [2023-08-30 23:11:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:11:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:11:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 966 transitions. [2023-08-30 23:11:13,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138297872340426 [2023-08-30 23:11:13,348 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 966 transitions. [2023-08-30 23:11:13,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 966 transitions. [2023-08-30 23:11:13,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:13,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 966 transitions. [2023-08-30 23:11:13,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.75) internal successors, (966), 8 states have internal predecessors, (966), 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) [2023-08-30 23:11:13,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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) [2023-08-30 23:11:13,354 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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) [2023-08-30 23:11:13,354 INFO L175 Difference]: Start difference. First operand has 99 places, 238 transitions, 4341 flow. Second operand 8 states and 966 transitions. [2023-08-30 23:11:13,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 363 transitions, 6939 flow [2023-08-30 23:11:13,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 363 transitions, 6920 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 23:11:13,913 INFO L231 Difference]: Finished difference. Result has 108 places, 278 transitions, 5707 flow [2023-08-30 23:11:13,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5707, PETRI_PLACES=108, PETRI_TRANSITIONS=278} [2023-08-30 23:11:13,913 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-08-30 23:11:13,913 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 278 transitions, 5707 flow [2023-08-30 23:11:13,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2023-08-30 23:11:13,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:13,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:13,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 23:11:13,914 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:13,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash 935965889, now seen corresponding path program 1 times [2023-08-30 23:11:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:13,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697444698] [2023-08-30 23:11:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:14,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697444698] [2023-08-30 23:11:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697444698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:14,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:14,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:11:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652804779] [2023-08-30 23:11:14,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:14,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:11:14,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:14,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:11:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:11:14,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:11:14,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 278 transitions, 5707 flow. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 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) [2023-08-30 23:11:14,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:14,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:11:14,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:18,868 INFO L130 PetriNetUnfolder]: 23774/34462 cut-off events. [2023-08-30 23:11:18,869 INFO L131 PetriNetUnfolder]: For 680421/683357 co-relation queries the response was YES. [2023-08-30 23:11:19,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262985 conditions, 34462 events. 23774/34462 cut-off events. For 680421/683357 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 231989 event pairs, 4229 based on Foata normal form. 1860/35613 useless extension candidates. Maximal degree in co-relation 262930. Up to 17214 conditions per place. [2023-08-30 23:11:19,110 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 299 selfloop transitions, 3 changer transitions 158/507 dead transitions. [2023-08-30 23:11:19,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 507 transitions, 11475 flow [2023-08-30 23:11:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:11:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:11:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 608 transitions. [2023-08-30 23:11:19,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174468085106383 [2023-08-30 23:11:19,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 608 transitions. [2023-08-30 23:11:19,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 608 transitions. [2023-08-30 23:11:19,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:19,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 608 transitions. [2023-08-30 23:11:19,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.6) internal successors, (608), 5 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:11:19,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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) [2023-08-30 23:11:19,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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) [2023-08-30 23:11:19,115 INFO L175 Difference]: Start difference. First operand has 108 places, 278 transitions, 5707 flow. Second operand 5 states and 608 transitions. [2023-08-30 23:11:19,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 507 transitions, 11475 flow [2023-08-30 23:11:20,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 507 transitions, 11434 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-30 23:11:20,235 INFO L231 Difference]: Finished difference. Result has 110 places, 245 transitions, 4938 flow [2023-08-30 23:11:20,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4938, PETRI_PLACES=110, PETRI_TRANSITIONS=245} [2023-08-30 23:11:20,236 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2023-08-30 23:11:20,236 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 245 transitions, 4938 flow [2023-08-30 23:11:20,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 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) [2023-08-30 23:11:20,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:20,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 23:11:20,237 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:20,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -938231587, now seen corresponding path program 2 times [2023-08-30 23:11:20,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:20,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437381946] [2023-08-30 23:11:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:20,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437381946] [2023-08-30 23:11:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437381946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:20,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:20,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:11:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268045614] [2023-08-30 23:11:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:20,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:11:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:11:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:11:20,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:11:20,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 245 transitions, 4938 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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) [2023-08-30 23:11:20,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:20,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:11:20,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:23,141 INFO L130 PetriNetUnfolder]: 12394/18504 cut-off events. [2023-08-30 23:11:23,141 INFO L131 PetriNetUnfolder]: For 424484/428977 co-relation queries the response was YES. [2023-08-30 23:11:23,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140220 conditions, 18504 events. 12394/18504 cut-off events. For 424484/428977 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 123562 event pairs, 3031 based on Foata normal form. 1580/19204 useless extension candidates. Maximal degree in co-relation 140164. Up to 15125 conditions per place. [2023-08-30 23:11:23,260 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 252 selfloop transitions, 5 changer transitions 2/317 dead transitions. [2023-08-30 23:11:23,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 317 transitions, 6973 flow [2023-08-30 23:11:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:11:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:11:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-30 23:11:23,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526241134751773 [2023-08-30 23:11:23,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-30 23:11:23,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-30 23:11:23,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:23,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-30 23:11:23,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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) [2023-08-30 23:11:23,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2023-08-30 23:11:23,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2023-08-30 23:11:23,266 INFO L175 Difference]: Start difference. First operand has 110 places, 245 transitions, 4938 flow. Second operand 3 states and 371 transitions. [2023-08-30 23:11:23,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 317 transitions, 6973 flow [2023-08-30 23:11:23,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 317 transitions, 6823 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-08-30 23:11:23,627 INFO L231 Difference]: Finished difference. Result has 108 places, 225 transitions, 4323 flow [2023-08-30 23:11:23,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4290, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4323, PETRI_PLACES=108, PETRI_TRANSITIONS=225} [2023-08-30 23:11:23,628 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-08-30 23:11:23,628 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 225 transitions, 4323 flow [2023-08-30 23:11:23,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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) [2023-08-30 23:11:23,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:23,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:23,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 23:11:23,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:23,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 121380588, now seen corresponding path program 1 times [2023-08-30 23:11:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745607735] [2023-08-30 23:11:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:23,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:23,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745607735] [2023-08-30 23:11:23,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745607735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:23,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:23,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:11:23,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517020389] [2023-08-30 23:11:23,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:23,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:11:23,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:11:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:11:23,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:11:23,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 225 transitions, 4323 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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) [2023-08-30 23:11:23,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:23,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:11:23,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:25,277 INFO L130 PetriNetUnfolder]: 6157/9742 cut-off events. [2023-08-30 23:11:25,277 INFO L131 PetriNetUnfolder]: For 212581/214755 co-relation queries the response was YES. [2023-08-30 23:11:25,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76314 conditions, 9742 events. 6157/9742 cut-off events. For 212581/214755 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 63624 event pairs, 966 based on Foata normal form. 1284/10729 useless extension candidates. Maximal degree in co-relation 76259. Up to 4948 conditions per place. [2023-08-30 23:11:25,332 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 256 selfloop transitions, 9 changer transitions 5/325 dead transitions. [2023-08-30 23:11:25,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 325 transitions, 7017 flow [2023-08-30 23:11:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:11:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:11:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 496 transitions. [2023-08-30 23:11:25,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2023-08-30 23:11:25,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 496 transitions. [2023-08-30 23:11:25,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 496 transitions. [2023-08-30 23:11:25,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:25,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 496 transitions. [2023-08-30 23:11:25,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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) [2023-08-30 23:11:25,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 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) [2023-08-30 23:11:25,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 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) [2023-08-30 23:11:25,336 INFO L175 Difference]: Start difference. First operand has 108 places, 225 transitions, 4323 flow. Second operand 4 states and 496 transitions. [2023-08-30 23:11:25,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 325 transitions, 7017 flow [2023-08-30 23:11:25,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 325 transitions, 6711 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-08-30 23:11:25,476 INFO L231 Difference]: Finished difference. Result has 106 places, 189 transitions, 3402 flow [2023-08-30 23:11:25,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3402, PETRI_PLACES=106, PETRI_TRANSITIONS=189} [2023-08-30 23:11:25,477 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2023-08-30 23:11:25,477 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 189 transitions, 3402 flow [2023-08-30 23:11:25,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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) [2023-08-30 23:11:25,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:25,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:25,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 23:11:25,478 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:25,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:25,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2016177905, now seen corresponding path program 1 times [2023-08-30 23:11:25,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:25,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074447822] [2023-08-30 23:11:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:25,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:25,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074447822] [2023-08-30 23:11:25,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074447822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:25,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:25,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:11:25,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045024644] [2023-08-30 23:11:25,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:25,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:11:25,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:25,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:11:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:11:25,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:11:25,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 189 transitions, 3402 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2023-08-30 23:11:25,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:25,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:11:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:28,114 INFO L130 PetriNetUnfolder]: 9823/15380 cut-off events. [2023-08-30 23:11:28,114 INFO L131 PetriNetUnfolder]: For 245367/245510 co-relation queries the response was YES. [2023-08-30 23:11:28,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119350 conditions, 15380 events. 9823/15380 cut-off events. For 245367/245510 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 100297 event pairs, 2584 based on Foata normal form. 225/15576 useless extension candidates. Maximal degree in co-relation 119296. Up to 7730 conditions per place. [2023-08-30 23:11:28,199 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 131 selfloop transitions, 22 changer transitions 133/289 dead transitions. [2023-08-30 23:11:28,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 289 transitions, 5564 flow [2023-08-30 23:11:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:11:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:11:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 687 transitions. [2023-08-30 23:11:28,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48723404255319147 [2023-08-30 23:11:28,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 687 transitions. [2023-08-30 23:11:28,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 687 transitions. [2023-08-30 23:11:28,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:28,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 687 transitions. [2023-08-30 23:11:28,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2023-08-30 23:11:28,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:11:28,204 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:11:28,204 INFO L175 Difference]: Start difference. First operand has 106 places, 189 transitions, 3402 flow. Second operand 6 states and 687 transitions. [2023-08-30 23:11:28,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 289 transitions, 5564 flow [2023-08-30 23:11:28,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 289 transitions, 5530 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 23:11:28,419 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 2056 flow [2023-08-30 23:11:28,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2056, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2023-08-30 23:11:28,420 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2023-08-30 23:11:28,420 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 2056 flow [2023-08-30 23:11:28,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2023-08-30 23:11:28,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:28,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:28,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 23:11:28,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:28,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash -379899133, now seen corresponding path program 1 times [2023-08-30 23:11:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:28,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160264360] [2023-08-30 23:11:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:28,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:28,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160264360] [2023-08-30 23:11:28,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160264360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:28,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:28,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:11:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691984662] [2023-08-30 23:11:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:11:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:11:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:11:28,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:11:28,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 2056 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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) [2023-08-30 23:11:28,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:28,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:11:28,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:29,464 INFO L130 PetriNetUnfolder]: 3876/6367 cut-off events. [2023-08-30 23:11:29,464 INFO L131 PetriNetUnfolder]: For 121114/122137 co-relation queries the response was YES. [2023-08-30 23:11:29,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48564 conditions, 6367 events. 3876/6367 cut-off events. For 121114/122137 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 41548 event pairs, 553 based on Foata normal form. 808/6973 useless extension candidates. Maximal degree in co-relation 48507. Up to 2934 conditions per place. [2023-08-30 23:11:29,504 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 163 selfloop transitions, 13 changer transitions 12/218 dead transitions. [2023-08-30 23:11:29,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 218 transitions, 4180 flow [2023-08-30 23:11:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:11:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:11:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2023-08-30 23:11:29,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268085106382979 [2023-08-30 23:11:29,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 619 transitions. [2023-08-30 23:11:29,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 619 transitions. [2023-08-30 23:11:29,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:29,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 619 transitions. [2023-08-30 23:11:29,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 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) [2023-08-30 23:11:29,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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) [2023-08-30 23:11:29,508 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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) [2023-08-30 23:11:29,508 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 2056 flow. Second operand 5 states and 619 transitions. [2023-08-30 23:11:29,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 218 transitions, 4180 flow [2023-08-30 23:11:29,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 218 transitions, 4022 flow, removed 45 selfloop flow, removed 7 redundant places. [2023-08-30 23:11:29,687 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 1833 flow [2023-08-30 23:11:29,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1833, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2023-08-30 23:11:29,688 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-08-30 23:11:29,688 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 1833 flow [2023-08-30 23:11:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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) [2023-08-30 23:11:29,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:29,688 INFO L208 CegarLoopForPetriNet]: 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] [2023-08-30 23:11:29,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 23:11:29,689 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:29,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1934627257, now seen corresponding path program 1 times [2023-08-30 23:11:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:29,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123084027] [2023-08-30 23:11:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:29,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123084027] [2023-08-30 23:11:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123084027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:29,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:29,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:11:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985065453] [2023-08-30 23:11:29,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:11:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:11:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:11:29,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:11:29,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 1833 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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) [2023-08-30 23:11:29,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:29,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:11:29,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:30,587 INFO L130 PetriNetUnfolder]: 3559/5767 cut-off events. [2023-08-30 23:11:30,587 INFO L131 PetriNetUnfolder]: For 100137/101151 co-relation queries the response was YES. [2023-08-30 23:11:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44886 conditions, 5767 events. 3559/5767 cut-off events. For 100137/101151 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37160 event pairs, 506 based on Foata normal form. 504/6084 useless extension candidates. Maximal degree in co-relation 44831. Up to 2604 conditions per place. [2023-08-30 23:11:30,617 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 120 selfloop transitions, 17 changer transitions 51/209 dead transitions. [2023-08-30 23:11:30,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 209 transitions, 3871 flow [2023-08-30 23:11:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:11:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:11:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 729 transitions. [2023-08-30 23:11:30,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2023-08-30 23:11:30,618 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 729 transitions. [2023-08-30 23:11:30,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 729 transitions. [2023-08-30 23:11:30,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:30,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 729 transitions. [2023-08-30 23:11:30,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 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) [2023-08-30 23:11:30,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:11:30,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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) [2023-08-30 23:11:30,621 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 1833 flow. Second operand 6 states and 729 transitions. [2023-08-30 23:11:30,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 209 transitions, 3871 flow [2023-08-30 23:11:30,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 209 transitions, 3640 flow, removed 90 selfloop flow, removed 5 redundant places. [2023-08-30 23:11:30,943 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 1264 flow [2023-08-30 23:11:30,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1264, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2023-08-30 23:11:30,943 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2023-08-30 23:11:30,943 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 1264 flow [2023-08-30 23:11:30,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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) [2023-08-30 23:11:30,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:30,944 INFO L208 CegarLoopForPetriNet]: 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] [2023-08-30 23:11:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 23:11:30,944 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:30,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash -465416219, now seen corresponding path program 1 times [2023-08-30 23:11:30,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:30,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043881421] [2023-08-30 23:11:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:30,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:31,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:31,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043881421] [2023-08-30 23:11:31,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043881421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:31,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:31,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:11:31,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776595584] [2023-08-30 23:11:31,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:31,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:11:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:31,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:11:31,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:11:31,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 235 [2023-08-30 23:11:31,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 1264 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 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) [2023-08-30 23:11:31,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:31,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 235 [2023-08-30 23:11:31,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:31,812 INFO L130 PetriNetUnfolder]: 1469/2388 cut-off events. [2023-08-30 23:11:31,812 INFO L131 PetriNetUnfolder]: For 29985/29995 co-relation queries the response was YES. [2023-08-30 23:11:31,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17237 conditions, 2388 events. 1469/2388 cut-off events. For 29985/29995 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11826 event pairs, 209 based on Foata normal form. 3/2380 useless extension candidates. Maximal degree in co-relation 17188. Up to 1515 conditions per place. [2023-08-30 23:11:31,822 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 54 selfloop transitions, 9 changer transitions 106/171 dead transitions. [2023-08-30 23:11:31,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 171 transitions, 2606 flow [2023-08-30 23:11:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:11:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:11:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2023-08-30 23:11:31,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674772036474164 [2023-08-30 23:11:31,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2023-08-30 23:11:31,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2023-08-30 23:11:31,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:31,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2023-08-30 23:11:31,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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) [2023-08-30 23:11:31,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:11:31,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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) [2023-08-30 23:11:31,825 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 1264 flow. Second operand 7 states and 769 transitions. [2023-08-30 23:11:31,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 171 transitions, 2606 flow [2023-08-30 23:11:31,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 2147 flow, removed 145 selfloop flow, removed 20 redundant places. [2023-08-30 23:11:31,875 INFO L231 Difference]: Finished difference. Result has 97 places, 53 transitions, 526 flow [2023-08-30 23:11:31,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=97, PETRI_TRANSITIONS=53} [2023-08-30 23:11:31,876 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2023-08-30 23:11:31,876 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 53 transitions, 526 flow [2023-08-30 23:11:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 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) [2023-08-30 23:11:31,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:31,877 INFO L208 CegarLoopForPetriNet]: 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] [2023-08-30 23:11:31,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 23:11:31,877 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:31,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1818452003, now seen corresponding path program 2 times [2023-08-30 23:11:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:31,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929227685] [2023-08-30 23:11:31,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:31,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:11:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:11:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:11:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929227685] [2023-08-30 23:11:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929227685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:11:33,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:11:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:11:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847216357] [2023-08-30 23:11:33,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:11:33,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:11:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:11:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:11:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:11:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 235 [2023-08-30 23:11:33,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 53 transitions, 526 flow. Second operand has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 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) [2023-08-30 23:11:33,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:11:33,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 235 [2023-08-30 23:11:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:11:33,434 INFO L130 PetriNetUnfolder]: 491/889 cut-off events. [2023-08-30 23:11:33,434 INFO L131 PetriNetUnfolder]: For 5704/5704 co-relation queries the response was YES. [2023-08-30 23:11:33,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 889 events. 491/889 cut-off events. For 5704/5704 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3999 event pairs, 84 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 4874. Up to 334 conditions per place. [2023-08-30 23:11:33,438 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 71 selfloop transitions, 13 changer transitions 50/134 dead transitions. [2023-08-30 23:11:33,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 134 transitions, 1316 flow [2023-08-30 23:11:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:11:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:11:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 965 transitions. [2023-08-30 23:11:33,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562647754137116 [2023-08-30 23:11:33,440 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 965 transitions. [2023-08-30 23:11:33,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 965 transitions. [2023-08-30 23:11:33,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:11:33,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 965 transitions. [2023-08-30 23:11:33,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 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) [2023-08-30 23:11:33,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2023-08-30 23:11:33,444 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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) [2023-08-30 23:11:33,444 INFO L175 Difference]: Start difference. First operand has 97 places, 53 transitions, 526 flow. Second operand 9 states and 965 transitions. [2023-08-30 23:11:33,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 134 transitions, 1316 flow [2023-08-30 23:11:33,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 134 transitions, 1156 flow, removed 20 selfloop flow, removed 22 redundant places. [2023-08-30 23:11:33,454 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 417 flow [2023-08-30 23:11:33,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-08-30 23:11:33,455 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2023-08-30 23:11:33,455 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 417 flow [2023-08-30 23:11:33,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 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) [2023-08-30 23:11:33,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:11:33,455 INFO L208 CegarLoopForPetriNet]: 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] [2023-08-30 23:11:33,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 23:11:33,455 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:11:33,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:11:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1875746827, now seen corresponding path program 3 times [2023-08-30 23:11:33,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:11:33,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792534361] [2023-08-30 23:11:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:11:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:11:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:11:33,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 23:11:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:11:33,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 23:11:33,558 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 23:11:33,559 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 23:11:33,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-30 23:11:33,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-30 23:11:33,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-30 23:11:33,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-30 23:11:33,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-30 23:11:33,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 23:11:33,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 23:11:33,562 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:11:33,566 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:11:33,566 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:11:33,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:11:33 BasicIcfg [2023-08-30 23:11:33,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:11:33,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:11:33,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:11:33,650 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:11:33,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:10:24" (3/4) ... [2023-08-30 23:11:33,652 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 23:11:33,756 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:11:33,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:11:33,757 INFO L158 Benchmark]: Toolchain (without parser) took 70388.95ms. Allocated memory was 71.3MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 47.3MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-08-30 23:11:33,758 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory was 48.3MB in the beginning and 48.3MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:11:33,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.36ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 47.1MB in the beginning and 56.4MB in the end (delta: -9.3MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-08-30 23:11:33,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.29ms. Allocated memory is still 86.0MB. Free memory was 56.4MB in the beginning and 53.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:11:33,758 INFO L158 Benchmark]: Boogie Preprocessor took 60.08ms. Allocated memory is still 86.0MB. Free memory was 53.7MB in the beginning and 51.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:11:33,759 INFO L158 Benchmark]: RCFGBuilder took 752.18ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 42.6MB in the end (delta: 9.0MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-08-30 23:11:33,759 INFO L158 Benchmark]: TraceAbstraction took 68931.75ms. Allocated memory was 86.0MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 41.8MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-08-30 23:11:33,759 INFO L158 Benchmark]: Witness Printer took 107.16ms. Allocated memory is still 9.5GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 23:11:33,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory was 48.3MB in the beginning and 48.3MB in the end (delta: 48.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.36ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 47.1MB in the beginning and 56.4MB in the end (delta: -9.3MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.29ms. Allocated memory is still 86.0MB. Free memory was 56.4MB in the beginning and 53.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.08ms. Allocated memory is still 86.0MB. Free memory was 53.7MB in the beginning and 51.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 752.18ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 42.6MB in the end (delta: 9.0MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 68931.75ms. Allocated memory was 86.0MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 41.8MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 107.16ms. Allocated memory is still 9.5GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 136 PlacesBefore, 44 PlacesAfterwards, 125 TransitionsBefore, 32 TransitionsAfterwards, 2986 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 8489 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3584, independent: 3350, independent conditional: 0, independent unconditional: 3350, dependent: 234, dependent conditional: 0, dependent unconditional: 234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1511, independent conditional: 0, independent unconditional: 1511, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3584, independent: 1839, independent conditional: 0, independent unconditional: 1839, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L724] 0 int y = 0; [L725] 0 _Bool y$flush_delayed; [L726] 0 int y$mem_tmp; [L727] 0 _Bool y$r_buff0_thd0; [L728] 0 _Bool y$r_buff0_thd1; [L729] 0 _Bool y$r_buff0_thd2; [L730] 0 _Bool y$r_buff0_thd3; [L731] 0 _Bool y$r_buff0_thd4; [L732] 0 _Bool y$r_buff1_thd0; [L733] 0 _Bool y$r_buff1_thd1; [L734] 0 _Bool y$r_buff1_thd2; [L735] 0 _Bool y$r_buff1_thd3; [L736] 0 _Bool y$r_buff1_thd4; [L737] 0 _Bool y$read_delayed; [L738] 0 int *y$read_delayed_var; [L739] 0 int y$w_buff0; [L740] 0 _Bool y$w_buff0_used; [L741] 0 int y$w_buff1; [L742] 0 _Bool y$w_buff1_used; [L744] 0 int z = 0; [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L846] 0 pthread_t t577; [L847] FCALL, FORK 0 pthread_create(&t577, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t577, ((void *)0), P0, ((void *)0))=-2, t577={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L848] 0 pthread_t t578; [L849] FCALL, FORK 0 pthread_create(&t578, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t578, ((void *)0), P1, ((void *)0))=-1, t577={5:0}, t578={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L850] 0 pthread_t t579; [L851] FCALL, FORK 0 pthread_create(&t579, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t579, ((void *)0), P2, ((void *)0))=0, t577={5:0}, t578={6:0}, t579={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L852] 0 pthread_t t580; [L853] FCALL, FORK 0 pthread_create(&t580, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t580, ((void *)0), P3, ((void *)0))=1, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L785] 3 y$w_buff1 = y$w_buff0 [L786] 3 y$w_buff0 = 2 [L787] 3 y$w_buff1_used = y$w_buff0_used [L788] 3 y$w_buff0_used = (_Bool)1 [L789] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L789] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L790] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L791] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L792] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L793] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L794] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L795] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L798] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L815] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L818] 4 __unbuffered_p3_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L821] 4 __unbuffered_p3_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L750] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L765] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L768] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L801] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L802] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L803] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L804] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L805] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L808] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L810] 3 return 0; [L824] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L825] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L826] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L827] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L828] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 1 return 0; [L771] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L772] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L773] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L774] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L775] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L778] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L780] 2 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L857] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L857] RET 0 assume_abort_if_not(main$tmp_guard0) [L859] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L860] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L861] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L862] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L863] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 y$flush_delayed = weak$$choice2 [L869] 0 y$mem_tmp = y [L870] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L871] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L872] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L873] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L874] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L876] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] 0 y = y$flush_delayed ? y$mem_tmp : y [L879] 0 y$flush_delayed = (_Bool)0 [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 68.7s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 52.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1803 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1479 mSDsluCounter, 1399 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1244 mSDsCounter, 390 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4659 IncrementalHoareTripleChecker+Invalid, 5049 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 390 mSolverCounterUnsat, 155 mSDtfsCounter, 4659 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5707occurred in iteration=15, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 393 ConstructedInterpolants, 0 QuantifiedInterpolants, 4588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-30 23:11:33,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE