./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/weaver/parallel-bakery-4.wvr.c -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 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:07:10,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:07:10,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:07:10,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:07:10,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:07:10,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:07:10,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:07:10,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:07:10,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:07:10,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:07:10,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:07:10,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:07:10,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:07:10,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:07:10,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:07:10,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:07:10,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:07:10,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:07:10,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:07:10,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:07:10,788 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:07:10,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:07:10,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:07:10,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:07:10,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:07:10,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:07:10,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:07:10,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:07:10,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:07:10,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:07:10,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:07:10,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:07:10,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:07:10,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:07:10,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:07:10,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:07:10,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:07:10,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:07:10,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:07:10,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:07:10,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:07:10,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:07:10,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:07:10,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:07:10,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:07:10,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:07:10,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:07:10,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:07:10,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:07:10,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:07:10,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:07:10,845 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:07:10,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:07:10,846 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:07:10,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:07:10,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:07:10,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:07:10,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:07:10,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:07:10,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:07:10,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:07:10,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:07:10,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:07:10,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:07:10,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:07:10,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:07:10,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:07:10,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:10,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:07:10,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:07:10,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:07:10,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:07:10,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:07:10,852 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:07:10,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:07:10,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:07:10,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 [2022-07-13 22:07:11,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:07:11,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:07:11,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:07:11,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:07:11,122 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:07:11,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-07-13 22:07:11,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13eaf8e97/cfb938b7adba45b28af2e2b33e875e21/FLAGdfc0de1b2 [2022-07-13 22:07:11,566 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:07:11,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2022-07-13 22:07:11,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13eaf8e97/cfb938b7adba45b28af2e2b33e875e21/FLAGdfc0de1b2 [2022-07-13 22:07:11,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13eaf8e97/cfb938b7adba45b28af2e2b33e875e21 [2022-07-13 22:07:11,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:07:11,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:07:11,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:11,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:07:11,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:07:11,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:11,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53dc5775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11, skipping insertion in model container [2022-07-13 22:07:11,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:11,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:07:11,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:07:11,882 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/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-07-13 22:07:11,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:11,891 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:07:11,936 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/weaver/parallel-bakery-4.wvr.c[7978,7991] [2022-07-13 22:07:11,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:07:11,948 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:07:11,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11 WrapperNode [2022-07-13 22:07:11,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:07:11,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:11,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:07:11,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:07:11,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:11,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:11,996 INFO L137 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 440 [2022-07-13 22:07:11,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:07:11,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:07:11,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:07:11,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:07:12,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:07:12,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:07:12,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:07:12,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:07:12,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (1/1) ... [2022-07-13 22:07:12,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:07:12,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:07:12,060 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) [2022-07-13 22:07:12,079 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 [2022-07-13 22:07:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:07:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:07:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:07:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:07:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:07:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:07:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:07:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-13 22:07:12,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-13 22:07:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:07:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:07:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:07:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:07:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:07:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:07:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:07:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:07:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:07:12,102 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:07:12,186 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:07:12,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:07:12,605 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:07:12,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:07:12,790 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:07:12,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:12 BoogieIcfgContainer [2022-07-13 22:07:12,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:07:12,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:07:12,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:07:12,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:07:12,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:07:11" (1/3) ... [2022-07-13 22:07:12,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a990d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:12, skipping insertion in model container [2022-07-13 22:07:12,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:07:11" (2/3) ... [2022-07-13 22:07:12,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a990d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:07:12, skipping insertion in model container [2022-07-13 22:07:12,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:07:12" (3/3) ... [2022-07-13 22:07:12,802 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2022-07-13 22:07:12,806 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:07:12,814 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:07:12,815 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:07:12,815 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:07:12,899 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-13 22:07:12,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 213 places, 202 transitions, 436 flow [2022-07-13 22:07:13,071 INFO L129 PetriNetUnfolder]: 2/198 cut-off events. [2022-07-13 22:07:13,071 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:07:13,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 198 events. 2/198 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 206 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-07-13 22:07:13,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 202 transitions, 436 flow [2022-07-13 22:07:13,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 185 transitions, 394 flow [2022-07-13 22:07:13,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:07:13,106 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@72847840, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c3158c1 [2022-07-13 22:07:13,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 22:07:13,151 INFO L129 PetriNetUnfolder]: 2/184 cut-off events. [2022-07-13 22:07:13,152 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:07:13,153 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:13,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:13,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:07:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 560411039, now seen corresponding path program 1 times [2022-07-13 22:07:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:13,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449957833] [2022-07-13 22:07:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:13,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:14,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449957833] [2022-07-13 22:07:14,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449957833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:14,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:14,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 22:07:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832538088] [2022-07-13 22:07:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:14,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:07:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:07:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:07:14,170 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 202 [2022-07-13 22:07:14,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 394 flow. Second operand has 15 states, 15 states have (on average 127.93333333333334) internal successors, (1919), 15 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:14,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:14,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 202 [2022-07-13 22:07:14,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:31,650 INFO L129 PetriNetUnfolder]: 93240/165958 cut-off events. [2022-07-13 22:07:31,652 INFO L130 PetriNetUnfolder]: For 11533/11533 co-relation queries the response was YES. [2022-07-13 22:07:32,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302885 conditions, 165958 events. 93240/165958 cut-off events. For 11533/11533 co-relation queries the response was YES. Maximal size of possible extension queue 3498. Compared 1709710 event pairs, 56436 based on Foata normal form. 9/165022 useless extension candidates. Maximal degree in co-relation 301046. Up to 76469 conditions per place. [2022-07-13 22:07:32,956 INFO L132 encePairwiseOnDemand]: 180/202 looper letters, 341 selfloop transitions, 31 changer transitions 30/509 dead transitions. [2022-07-13 22:07:32,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 509 transitions, 1948 flow [2022-07-13 22:07:32,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 22:07:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-13 22:07:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3610 transitions. [2022-07-13 22:07:32,977 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6873571972581873 [2022-07-13 22:07:32,978 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3610 transitions. [2022-07-13 22:07:32,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3610 transitions. [2022-07-13 22:07:32,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:32,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3610 transitions. [2022-07-13 22:07:33,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 138.84615384615384) internal successors, (3610), 26 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,031 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:33,033 INFO L186 Difference]: Start difference. First operand has 196 places, 185 transitions, 394 flow. Second operand 26 states and 3610 transitions. [2022-07-13 22:07:33,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 509 transitions, 1948 flow [2022-07-13 22:07:34,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 509 transitions, 1864 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-13 22:07:34,381 INFO L242 Difference]: Finished difference. Result has 220 places, 210 transitions, 543 flow [2022-07-13 22:07:34,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=543, PETRI_PLACES=220, PETRI_TRANSITIONS=210} [2022-07-13 22:07:34,386 INFO L279 CegarLoopForPetriNet]: 196 programPoint places, 24 predicate places. [2022-07-13 22:07:34,387 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 210 transitions, 543 flow [2022-07-13 22:07:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 127.93333333333334) internal successors, (1919), 15 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:34,389 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:34,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:34,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:07:34,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:07:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1383593079, now seen corresponding path program 2 times [2022-07-13 22:07:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:34,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138465639] [2022-07-13 22:07:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:34,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138465639] [2022-07-13 22:07:34,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138465639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:34,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:34,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:07:34,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309042858] [2022-07-13 22:07:34,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:34,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:07:34,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:07:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:07:34,571 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 202 [2022-07-13 22:07:34,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 210 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:34,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:34,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 202 [2022-07-13 22:07:34,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:07:44,224 INFO L129 PetriNetUnfolder]: 54028/98174 cut-off events. [2022-07-13 22:07:44,224 INFO L130 PetriNetUnfolder]: For 2539/2539 co-relation queries the response was YES. [2022-07-13 22:07:44,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183907 conditions, 98174 events. 54028/98174 cut-off events. For 2539/2539 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 973514 event pairs, 36143 based on Foata normal form. 2050/99561 useless extension candidates. Maximal degree in co-relation 183869. Up to 46800 conditions per place. [2022-07-13 22:07:45,035 INFO L132 encePairwiseOnDemand]: 197/202 looper letters, 81 selfloop transitions, 2 changer transitions 0/240 dead transitions. [2022-07-13 22:07:45,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 240 transitions, 772 flow [2022-07-13 22:07:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:07:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:07:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2022-07-13 22:07:45,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8646864686468647 [2022-07-13 22:07:45,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2022-07-13 22:07:45,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2022-07-13 22:07:45,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:07:45,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2022-07-13 22:07:45,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,042 INFO L186 Difference]: Start difference. First operand has 220 places, 210 transitions, 543 flow. Second operand 3 states and 524 transitions. [2022-07-13 22:07:45,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 240 transitions, 772 flow [2022-07-13 22:07:45,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 240 transitions, 762 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-13 22:07:45,086 INFO L242 Difference]: Finished difference. Result has 204 places, 210 transitions, 545 flow [2022-07-13 22:07:45,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=204, PETRI_TRANSITIONS=210} [2022-07-13 22:07:45,087 INFO L279 CegarLoopForPetriNet]: 196 programPoint places, 8 predicate places. [2022-07-13 22:07:45,087 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 210 transitions, 545 flow [2022-07-13 22:07:45,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,088 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:07:45,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:07:45,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:07:45,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:07:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:07:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1826355215, now seen corresponding path program 3 times [2022-07-13 22:07:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:07:45,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399641409] [2022-07-13 22:07:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:07:45,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:07:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:07:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:07:45,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:07:45,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399641409] [2022-07-13 22:07:45,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399641409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:07:45,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:07:45,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:07:45,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052408649] [2022-07-13 22:07:45,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:07:45,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:07:45,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:07:45,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:07:45,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:07:45,188 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 202 [2022-07-13 22:07:45,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 210 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:07:45,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:07:45,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 202 [2022-07-13 22:07:45,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand