./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix039.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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 ../sv-benchmarks/c/pthread-wmm/mix039.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 42c5ff0d69642601057eb29fc7d78b67af5ab0b43644460199f4561abe049d3b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:08:37,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:08:37,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:08:38,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:08:38,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:08:38,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:08:38,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:08:38,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:08:38,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:08:38,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:08:38,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:08:38,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:08:38,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:08:38,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:08:38,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:08:38,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:08:38,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:08:38,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:08:38,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:08:38,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:08:38,041 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:08:38,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:08:38,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:08:38,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:08:38,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:08:38,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:08:38,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:08:38,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:08:38,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:08:38,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:08:38,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:08:38,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:08:38,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:08:38,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:08:38,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:08:38,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:08:38,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:08:38,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:08:38,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:08:38,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:08:38,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:08:38,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:08:38,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:08:38,092 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:08:38,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:08:38,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:08:38,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:08:38,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:08:38,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:08:38,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:08:38,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:08:38,095 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:08:38,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:08:38,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:08:38,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:08:38,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:08:38,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:08:38,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:08:38,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:08:38,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:08:38,098 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:08:38,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:08:38,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:08:38,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:08:38,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:08:38,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:08:38,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:08:38,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:08:38,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:08:38,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:08:38,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:08:38,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:08:38,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:08:38,101 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:08:38,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:08:38,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:08:38,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42c5ff0d69642601057eb29fc7d78b67af5ab0b43644460199f4561abe049d3b [2022-07-19 21:08:38,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:08:38,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:08:38,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:08:38,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:08:38,374 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:08:38,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix039.oepc.i [2022-07-19 21:08:38,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563866804/709beecf84a9443da96263adc57ac6ea/FLAG40b819d6b [2022-07-19 21:08:38,874 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:08:38,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix039.oepc.i [2022-07-19 21:08:38,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563866804/709beecf84a9443da96263adc57ac6ea/FLAG40b819d6b [2022-07-19 21:08:39,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/563866804/709beecf84a9443da96263adc57ac6ea [2022-07-19 21:08:39,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:08:39,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:08:39,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:08:39,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:08:39,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:08:39,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b1da47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39, skipping insertion in model container [2022-07-19 21:08:39,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:08:39,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:08:39,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix039.oepc.i[945,958] [2022-07-19 21:08:39,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:08:39,585 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:08:39,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix039.oepc.i[945,958] [2022-07-19 21:08:39,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:08:39,700 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:08:39,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39 WrapperNode [2022-07-19 21:08:39,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:08:39,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:08:39,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:08:39,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:08:39,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,770 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 194 [2022-07-19 21:08:39,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:08:39,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:08:39,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:08:39,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:08:39,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:08:39,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:08:39,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:08:39,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:08:39,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (1/1) ... [2022-07-19 21:08:39,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:08:39,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:08:39,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:08:39,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:08:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:08:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:08:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:08:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:08:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:08:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:08:39,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:08:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:08:39,873 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:08:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:08:39,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:08:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:08:39,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:08:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:08:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:08:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:08:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:08:39,876 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:08:40,043 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:08:40,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:08:40,589 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:08:40,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:08:40,909 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:08:40,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:08:40 BoogieIcfgContainer [2022-07-19 21:08:40,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:08:40,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:08:40,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:08:40,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:08:40,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:08:39" (1/3) ... [2022-07-19 21:08:40,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79163bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:08:40, skipping insertion in model container [2022-07-19 21:08:40,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:39" (2/3) ... [2022-07-19 21:08:40,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79163bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:08:40, skipping insertion in model container [2022-07-19 21:08:40,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:08:40" (3/3) ... [2022-07-19 21:08:40,920 INFO L111 eAbstractionObserver]: Analyzing ICFG mix039.oepc.i [2022-07-19 21:08:40,941 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:08:40,946 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:08:40,947 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:08:40,947 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:08:41,026 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:08:41,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 140 transitions, 300 flow [2022-07-19 21:08:41,119 INFO L129 PetriNetUnfolder]: 2/136 cut-off events. [2022-07-19 21:08:41,120 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:08:41,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 2/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-19 21:08:41,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 140 transitions, 300 flow [2022-07-19 21:08:41,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 136 transitions, 284 flow [2022-07-19 21:08:41,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:08:41,155 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@95cc70d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e643d61 [2022-07-19 21:08:41,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:08:41,173 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2022-07-19 21:08:41,173 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:08:41,173 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:41,174 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:41,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:41,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1071099749, now seen corresponding path program 1 times [2022-07-19 21:08:41,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:41,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932742119] [2022-07-19 21:08:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:41,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:41,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:41,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932742119] [2022-07-19 21:08:41,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932742119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:41,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:41,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:08:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34018401] [2022-07-19 21:08:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:41,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:08:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:08:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:08:41,514 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 140 [2022-07-19 21:08:41,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 136 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:41,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:41,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 140 [2022-07-19 21:08:41,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:41,766 INFO L129 PetriNetUnfolder]: 162/624 cut-off events. [2022-07-19 21:08:41,767 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-19 21:08:41,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 624 events. 162/624 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3440 event pairs, 132 based on Foata normal form. 46/628 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-07-19 21:08:41,775 INFO L132 encePairwiseOnDemand]: 135/140 looper letters, 18 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-07-19 21:08:41,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 140 transitions, 341 flow [2022-07-19 21:08:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:08:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:08:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2022-07-19 21:08:41,788 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452380952380952 [2022-07-19 21:08:41,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2022-07-19 21:08:41,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2022-07-19 21:08:41,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:41,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2022-07-19 21:08:41,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:41,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:41,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:41,803 INFO L186 Difference]: Start difference. First operand has 147 places, 136 transitions, 284 flow. Second operand 3 states and 397 transitions. [2022-07-19 21:08:41,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 140 transitions, 341 flow [2022-07-19 21:08:41,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 334 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:08:41,829 INFO L242 Difference]: Finished difference. Result has 143 places, 132 transitions, 276 flow [2022-07-19 21:08:41,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=143, PETRI_TRANSITIONS=132} [2022-07-19 21:08:41,836 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, -4 predicate places. [2022-07-19 21:08:41,837 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 132 transitions, 276 flow [2022-07-19 21:08:41,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:41,838 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:41,838 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:41,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:08:41,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2044475513, now seen corresponding path program 1 times [2022-07-19 21:08:41,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:41,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408864622] [2022-07-19 21:08:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:42,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408864622] [2022-07-19 21:08:42,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408864622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:42,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:42,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15412659] [2022-07-19 21:08:42,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:42,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:42,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:42,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:42,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:42,085 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-19 21:08:42,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:42,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:42,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-19 21:08:42,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:45,599 INFO L129 PetriNetUnfolder]: 9293/20705 cut-off events. [2022-07-19 21:08:45,600 INFO L130 PetriNetUnfolder]: For 880/880 co-relation queries the response was YES. [2022-07-19 21:08:45,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34538 conditions, 20705 events. 9293/20705 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 207504 event pairs, 909 based on Foata normal form. 0/20354 useless extension candidates. Maximal degree in co-relation 34476. Up to 4819 conditions per place. [2022-07-19 21:08:45,743 INFO L132 encePairwiseOnDemand]: 129/140 looper letters, 43 selfloop transitions, 7 changer transitions 113/254 dead transitions. [2022-07-19 21:08:45,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 254 transitions, 842 flow [2022-07-19 21:08:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1557 transitions. [2022-07-19 21:08:45,749 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8554945054945055 [2022-07-19 21:08:45,749 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1557 transitions. [2022-07-19 21:08:45,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1557 transitions. [2022-07-19 21:08:45,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:45,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1557 transitions. [2022-07-19 21:08:45,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.76923076923077) internal successors, (1557), 13 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,761 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,762 INFO L186 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 13 states and 1557 transitions. [2022-07-19 21:08:45,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 254 transitions, 842 flow [2022-07-19 21:08:45,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 254 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:08:45,768 INFO L242 Difference]: Finished difference. Result has 165 places, 123 transitions, 344 flow [2022-07-19 21:08:45,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=344, PETRI_PLACES=165, PETRI_TRANSITIONS=123} [2022-07-19 21:08:45,769 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 18 predicate places. [2022-07-19 21:08:45,770 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 123 transitions, 344 flow [2022-07-19 21:08:45,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:45,771 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:45,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:08:45,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:45,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1530593809, now seen corresponding path program 1 times [2022-07-19 21:08:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:45,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515093406] [2022-07-19 21:08:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:45,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:45,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515093406] [2022-07-19 21:08:45,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515093406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:45,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:45,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745652621] [2022-07-19 21:08:45,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:45,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:45,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:45,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-19 21:08:45,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 123 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:45,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-19 21:08:45,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:48,095 INFO L129 PetriNetUnfolder]: 6732/11952 cut-off events. [2022-07-19 21:08:48,096 INFO L130 PetriNetUnfolder]: For 21720/21740 co-relation queries the response was YES. [2022-07-19 21:08:48,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35476 conditions, 11952 events. 6732/11952 cut-off events. For 21720/21740 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 91233 event pairs, 1164 based on Foata normal form. 236/11889 useless extension candidates. Maximal degree in co-relation 35402. Up to 4207 conditions per place. [2022-07-19 21:08:48,198 INFO L132 encePairwiseOnDemand]: 127/140 looper letters, 44 selfloop transitions, 16 changer transitions 88/239 dead transitions. [2022-07-19 21:08:48,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 239 transitions, 1246 flow [2022-07-19 21:08:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1550 transitions. [2022-07-19 21:08:48,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8516483516483516 [2022-07-19 21:08:48,206 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1550 transitions. [2022-07-19 21:08:48,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1550 transitions. [2022-07-19 21:08:48,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:48,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1550 transitions. [2022-07-19 21:08:48,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.23076923076923) internal successors, (1550), 13 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:48,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:48,216 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:48,216 INFO L186 Difference]: Start difference. First operand has 165 places, 123 transitions, 344 flow. Second operand 13 states and 1550 transitions. [2022-07-19 21:08:48,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 239 transitions, 1246 flow [2022-07-19 21:08:48,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 239 transitions, 1194 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-07-19 21:08:48,340 INFO L242 Difference]: Finished difference. Result has 161 places, 130 transitions, 469 flow [2022-07-19 21:08:48,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=469, PETRI_PLACES=161, PETRI_TRANSITIONS=130} [2022-07-19 21:08:48,343 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 14 predicate places. [2022-07-19 21:08:48,344 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 130 transitions, 469 flow [2022-07-19 21:08:48,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:48,345 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:48,345 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:48,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:08:48,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:48,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1835315408, now seen corresponding path program 1 times [2022-07-19 21:08:48,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:48,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545437312] [2022-07-19 21:08:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:48,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545437312] [2022-07-19 21:08:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545437312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:48,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:08:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727469834] [2022-07-19 21:08:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:48,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:08:48,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:08:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:08:48,595 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-19 21:08:48,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 130 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:48,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:48,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-19 21:08:48,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:52,608 INFO L129 PetriNetUnfolder]: 17594/30604 cut-off events. [2022-07-19 21:08:52,609 INFO L130 PetriNetUnfolder]: For 33378/38148 co-relation queries the response was YES. [2022-07-19 21:08:52,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73186 conditions, 30604 events. 17594/30604 cut-off events. For 33378/38148 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 274466 event pairs, 1582 based on Foata normal form. 28/28658 useless extension candidates. Maximal degree in co-relation 73104. Up to 9199 conditions per place. [2022-07-19 21:08:52,939 INFO L132 encePairwiseOnDemand]: 129/140 looper letters, 93 selfloop transitions, 20 changer transitions 0/219 dead transitions. [2022-07-19 21:08:52,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 219 transitions, 984 flow [2022-07-19 21:08:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:08:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:08:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1237 transitions. [2022-07-19 21:08:52,944 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8835714285714286 [2022-07-19 21:08:52,944 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1237 transitions. [2022-07-19 21:08:52,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1237 transitions. [2022-07-19 21:08:52,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:52,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1237 transitions. [2022-07-19 21:08:52,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.7) internal successors, (1237), 10 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:52,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:52,954 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:52,954 INFO L186 Difference]: Start difference. First operand has 161 places, 130 transitions, 469 flow. Second operand 10 states and 1237 transitions. [2022-07-19 21:08:52,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 219 transitions, 984 flow [2022-07-19 21:08:53,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 219 transitions, 954 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-07-19 21:08:53,039 INFO L242 Difference]: Finished difference. Result has 155 places, 148 transitions, 582 flow [2022-07-19 21:08:53,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=582, PETRI_PLACES=155, PETRI_TRANSITIONS=148} [2022-07-19 21:08:53,043 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2022-07-19 21:08:53,044 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 148 transitions, 582 flow [2022-07-19 21:08:53,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:53,044 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:53,045 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:53,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:08:53,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:53,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1021563462, now seen corresponding path program 1 times [2022-07-19 21:08:53,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:53,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313051411] [2022-07-19 21:08:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:53,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:53,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:53,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313051411] [2022-07-19 21:08:53,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313051411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:53,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:53,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749771584] [2022-07-19 21:08:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:53,199 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-19 21:08:53,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 148 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:53,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:53,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-19 21:08:53,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:55,705 INFO L129 PetriNetUnfolder]: 7610/18458 cut-off events. [2022-07-19 21:08:55,706 INFO L130 PetriNetUnfolder]: For 29946/33205 co-relation queries the response was YES. [2022-07-19 21:08:55,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52881 conditions, 18458 events. 7610/18458 cut-off events. For 29946/33205 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 202866 event pairs, 2046 based on Foata normal form. 393/17875 useless extension candidates. Maximal degree in co-relation 52798. Up to 3637 conditions per place. [2022-07-19 21:08:55,867 INFO L132 encePairwiseOnDemand]: 129/140 looper letters, 99 selfloop transitions, 22 changer transitions 0/230 dead transitions. [2022-07-19 21:08:55,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 230 transitions, 1281 flow [2022-07-19 21:08:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:08:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:08:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1192 transitions. [2022-07-19 21:08:55,872 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8514285714285714 [2022-07-19 21:08:55,872 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1192 transitions. [2022-07-19 21:08:55,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1192 transitions. [2022-07-19 21:08:55,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:55,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1192 transitions. [2022-07-19 21:08:55,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.2) internal successors, (1192), 10 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:55,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:55,878 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:55,878 INFO L186 Difference]: Start difference. First operand has 155 places, 148 transitions, 582 flow. Second operand 10 states and 1192 transitions. [2022-07-19 21:08:55,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 230 transitions, 1281 flow [2022-07-19 21:08:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 230 transitions, 1279 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:08:55,985 INFO L242 Difference]: Finished difference. Result has 171 places, 160 transitions, 775 flow [2022-07-19 21:08:55,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=775, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-07-19 21:08:55,987 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 24 predicate places. [2022-07-19 21:08:55,987 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 775 flow [2022-07-19 21:08:55,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:55,988 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:55,988 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:55,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:08:55,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1512984125, now seen corresponding path program 1 times [2022-07-19 21:08:55,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:55,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805698870] [2022-07-19 21:08:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:56,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:56,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805698870] [2022-07-19 21:08:56,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805698870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:56,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:56,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929995588] [2022-07-19 21:08:56,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:56,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:56,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 140 [2022-07-19 21:08:56,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 775 flow. Second operand has 7 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:56,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:56,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 140 [2022-07-19 21:08:56,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:00,877 INFO L129 PetriNetUnfolder]: 13905/33314 cut-off events. [2022-07-19 21:09:00,877 INFO L130 PetriNetUnfolder]: For 74528/80270 co-relation queries the response was YES. [2022-07-19 21:09:01,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100152 conditions, 33314 events. 13905/33314 cut-off events. For 74528/80270 co-relation queries the response was YES. Maximal size of possible extension queue 1832. Compared 396865 event pairs, 2241 based on Foata normal form. 551/32190 useless extension candidates. Maximal degree in co-relation 100056. Up to 6996 conditions per place. [2022-07-19 21:09:01,169 INFO L132 encePairwiseOnDemand]: 126/140 looper letters, 110 selfloop transitions, 54 changer transitions 0/271 dead transitions. [2022-07-19 21:09:01,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 271 transitions, 1844 flow [2022-07-19 21:09:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:09:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:09:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1290 transitions. [2022-07-19 21:09:01,173 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8376623376623377 [2022-07-19 21:09:01,173 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1290 transitions. [2022-07-19 21:09:01,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1290 transitions. [2022-07-19 21:09:01,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:01,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1290 transitions. [2022-07-19 21:09:01,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 117.27272727272727) internal successors, (1290), 11 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:01,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 140.0) internal successors, (1680), 12 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:01,180 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 140.0) internal successors, (1680), 12 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:01,180 INFO L186 Difference]: Start difference. First operand has 171 places, 160 transitions, 775 flow. Second operand 11 states and 1290 transitions. [2022-07-19 21:09:01,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 271 transitions, 1844 flow [2022-07-19 21:09:01,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 271 transitions, 1798 flow, removed 23 selfloop flow, removed 0 redundant places. [2022-07-19 21:09:01,564 INFO L242 Difference]: Finished difference. Result has 190 places, 199 transitions, 1403 flow [2022-07-19 21:09:01,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1403, PETRI_PLACES=190, PETRI_TRANSITIONS=199} [2022-07-19 21:09:01,565 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 43 predicate places. [2022-07-19 21:09:01,566 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 199 transitions, 1403 flow [2022-07-19 21:09:01,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:01,566 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:01,566 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:01,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:09:01,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1670473457, now seen corresponding path program 2 times [2022-07-19 21:09:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:01,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365294144] [2022-07-19 21:09:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:01,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:01,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365294144] [2022-07-19 21:09:01,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365294144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:01,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:01,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052149952] [2022-07-19 21:09:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:01,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:01,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:01,674 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-19 21:09:01,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 199 transitions, 1403 flow. Second operand has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:01,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:01,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-19 21:09:01,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:10,727 INFO L129 PetriNetUnfolder]: 33221/59439 cut-off events. [2022-07-19 21:09:10,728 INFO L130 PetriNetUnfolder]: For 229374/249062 co-relation queries the response was YES. [2022-07-19 21:09:11,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204527 conditions, 59439 events. 33221/59439 cut-off events. For 229374/249062 co-relation queries the response was YES. Maximal size of possible extension queue 3785. Compared 599971 event pairs, 1607 based on Foata normal form. 1679/59000 useless extension candidates. Maximal degree in co-relation 204422. Up to 12421 conditions per place. [2022-07-19 21:09:11,333 INFO L132 encePairwiseOnDemand]: 129/140 looper letters, 133 selfloop transitions, 38 changer transitions 15/326 dead transitions. [2022-07-19 21:09:11,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 326 transitions, 2605 flow [2022-07-19 21:09:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1613 transitions. [2022-07-19 21:09:11,337 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8862637362637362 [2022-07-19 21:09:11,337 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1613 transitions. [2022-07-19 21:09:11,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1613 transitions. [2022-07-19 21:09:11,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:11,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1613 transitions. [2022-07-19 21:09:11,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.07692307692308) internal successors, (1613), 13 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:11,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:11,345 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:11,345 INFO L186 Difference]: Start difference. First operand has 190 places, 199 transitions, 1403 flow. Second operand 13 states and 1613 transitions. [2022-07-19 21:09:11,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 326 transitions, 2605 flow [2022-07-19 21:09:12,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 326 transitions, 2523 flow, removed 41 selfloop flow, removed 0 redundant places. [2022-07-19 21:09:12,882 INFO L242 Difference]: Finished difference. Result has 208 places, 204 transitions, 1430 flow [2022-07-19 21:09:12,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1430, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2022-07-19 21:09:12,883 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 61 predicate places. [2022-07-19 21:09:12,883 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 1430 flow [2022-07-19 21:09:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:12,884 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:12,884 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:09:12,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1612650571, now seen corresponding path program 1 times [2022-07-19 21:09:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:12,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111368379] [2022-07-19 21:09:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:13,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:13,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111368379] [2022-07-19 21:09:13,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111368379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:13,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:13,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:09:13,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691249490] [2022-07-19 21:09:13,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:13,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:09:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:13,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:09:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:09:13,042 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-19 21:09:13,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 1430 flow. Second operand has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:13,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:13,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-19 21:09:13,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:22,042 INFO L129 PetriNetUnfolder]: 31683/56283 cut-off events. [2022-07-19 21:09:22,043 INFO L130 PetriNetUnfolder]: For 296022/311840 co-relation queries the response was YES. [2022-07-19 21:09:22,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227083 conditions, 56283 events. 31683/56283 cut-off events. For 296022/311840 co-relation queries the response was YES. Maximal size of possible extension queue 3755. Compared 569509 event pairs, 1461 based on Foata normal form. 1263/55506 useless extension candidates. Maximal degree in co-relation 226969. Up to 11801 conditions per place. [2022-07-19 21:09:22,665 INFO L132 encePairwiseOnDemand]: 129/140 looper letters, 128 selfloop transitions, 58 changer transitions 49/361 dead transitions. [2022-07-19 21:09:22,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 361 transitions, 3103 flow [2022-07-19 21:09:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:09:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:09:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1988 transitions. [2022-07-19 21:09:22,670 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8875 [2022-07-19 21:09:22,670 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1988 transitions. [2022-07-19 21:09:22,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1988 transitions. [2022-07-19 21:09:22,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:22,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1988 transitions. [2022-07-19 21:09:22,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 124.25) internal successors, (1988), 16 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:22,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:22,679 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:22,680 INFO L186 Difference]: Start difference. First operand has 208 places, 204 transitions, 1430 flow. Second operand 16 states and 1988 transitions. [2022-07-19 21:09:22,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 361 transitions, 3103 flow