./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --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/weaver/parallel-simple-equiv.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 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:30:04,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:30:04,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:30:04,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:30:04,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:30:04,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:30:04,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:30:04,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:30:04,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:30:04,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:30:04,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:30:04,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:30:04,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:30:04,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:30:04,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:30:04,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:30:04,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:30:04,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:30:04,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:30:04,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:30:04,592 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:30:04,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:30:04,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:30:04,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:30:04,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:30:04,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:30:04,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:30:04,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:30:04,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:30:04,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:30:04,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:30:04,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:30:04,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:30:04,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:30:04,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:30:04,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:30:04,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:30:04,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:30:04,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:30:04,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:30:04,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:30:04,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:30:04,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:30:04,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:30:04,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:30:04,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:30:04,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:30:04,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:30:04,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:30:04,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:30:04,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:30:04,629 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:30:04,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:30:04,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:30:04,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:30:04,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:30:04,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:30:04,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:30:04,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:30:04,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:30:04,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:30:04,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:30:04,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:30:04,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:30:04,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:30:04,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:30:04,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:30:04,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:04,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:30:04,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:30:04,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:30:04,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:30:04,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:30:04,634 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:30:04,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:30:04,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:30:04,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2022-07-19 21:30:04,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:30:04,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:30:04,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:30:04,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:30:04,863 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:30:04,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2022-07-19 21:30:04,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19134c2a4/61a8f092b3d345cb8577fb91eedb73ff/FLAG29b38abdc [2022-07-19 21:30:05,278 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:30:05,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2022-07-19 21:30:05,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19134c2a4/61a8f092b3d345cb8577fb91eedb73ff/FLAG29b38abdc [2022-07-19 21:30:05,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19134c2a4/61a8f092b3d345cb8577fb91eedb73ff [2022-07-19 21:30:05,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:30:05,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:30:05,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:05,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:30:05,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:30:05,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:05,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b553d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05, skipping insertion in model container [2022-07-19 21:30:05,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:05,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:30:05,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:30:05,877 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-simple-equiv.wvr.c[2212,2225] [2022-07-19 21:30:05,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:05,893 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:30:05,927 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-simple-equiv.wvr.c[2212,2225] [2022-07-19 21:30:05,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:05,948 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:30:05,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05 WrapperNode [2022-07-19 21:30:05,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:05,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:05,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:30:05,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:30:05,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:05,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:05,984 INFO L137 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-19 21:30:05,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:05,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:30:05,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:30:05,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:30:05,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:05,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:05,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:06,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:06,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:06,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:06,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:06,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:30:06,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:30:06,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:30:06,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:30:06,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (1/1) ... [2022-07-19 21:30:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:06,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:30:06,044 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 21:30:06,055 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 21:30:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:30:06,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:30:06,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:30:06,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:30:06,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:30:06,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:30:06,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:30:06,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:30:06,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:30:06,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:30:06,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:30:06,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:30:06,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:30:06,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:30:06,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:30:06,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:30:06,079 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 21:30:06,132 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:30:06,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:30:06,315 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:30:06,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:30:06,331 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:30:06,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:06 BoogieIcfgContainer [2022-07-19 21:30:06,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:30:06,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:30:06,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:30:06,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:30:06,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:05" (1/3) ... [2022-07-19 21:30:06,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163717e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:06, skipping insertion in model container [2022-07-19 21:30:06,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:05" (2/3) ... [2022-07-19 21:30:06,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163717e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:06, skipping insertion in model container [2022-07-19 21:30:06,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:06" (3/3) ... [2022-07-19 21:30:06,338 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2022-07-19 21:30:06,342 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:30:06,348 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:30:06,349 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:30:06,349 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:30:06,381 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:30:06,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 212 flow [2022-07-19 21:30:06,476 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2022-07-19 21:30:06,477 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:30:06,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 2/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-07-19 21:30:06,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 212 flow [2022-07-19 21:30:06,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 80 transitions, 178 flow [2022-07-19 21:30:06,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:30:06,504 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@3d35e5db, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7908e6a9 [2022-07-19 21:30:06,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:30:06,529 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2022-07-19 21:30:06,530 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:30:06,530 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:06,531 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] [2022-07-19 21:30:06,531 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 1 more)] === [2022-07-19 21:30:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561410, now seen corresponding path program 1 times [2022-07-19 21:30:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344102939] [2022-07-19 21:30:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:06,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:07,101 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 21:30:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344102939] [2022-07-19 21:30:07,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344102939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:07,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:07,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179165157] [2022-07-19 21:30:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:07,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:07,143 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-19 21:30:07,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:07,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:07,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-19 21:30:07,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:07,776 INFO L129 PetriNetUnfolder]: 47/220 cut-off events. [2022-07-19 21:30:07,776 INFO L130 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-07-19 21:30:07,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 220 events. 47/220 cut-off events. For 73/79 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 737 event pairs, 21 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 250. Up to 85 conditions per place. [2022-07-19 21:30:07,792 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 27 selfloop transitions, 15 changer transitions 13/105 dead transitions. [2022-07-19 21:30:07,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 359 flow [2022-07-19 21:30:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:30:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:30:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 878 transitions. [2022-07-19 21:30:07,804 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7184942716857611 [2022-07-19 21:30:07,805 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 878 transitions. [2022-07-19 21:30:07,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 878 transitions. [2022-07-19 21:30:07,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:07,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 878 transitions. [2022-07-19 21:30:07,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.53846153846153) internal successors, (878), 13 states have internal predecessors, (878), 0 states have call successors, (0), 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 21:30:07,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:07,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:07,819 INFO L186 Difference]: Start difference. First operand has 88 places, 80 transitions, 178 flow. Second operand 13 states and 878 transitions. [2022-07-19 21:30:07,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 359 flow [2022-07-19 21:30:07,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 333 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:30:07,824 INFO L242 Difference]: Finished difference. Result has 99 places, 88 transitions, 249 flow [2022-07-19 21:30:07,826 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=249, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2022-07-19 21:30:07,828 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2022-07-19 21:30:07,828 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 249 flow [2022-07-19 21:30:07,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:07,832 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:07,832 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] [2022-07-19 21:30:07,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:30:07,833 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 1 more)] === [2022-07-19 21:30:07,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash 653009678, now seen corresponding path program 2 times [2022-07-19 21:30:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:07,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701794574] [2022-07-19 21:30:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:07,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:08,128 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 21:30:08,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:08,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701794574] [2022-07-19 21:30:08,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701794574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:08,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:08,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:08,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176517290] [2022-07-19 21:30:08,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:08,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-19 21:30:08,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:08,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:08,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-19 21:30:08,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:08,487 INFO L129 PetriNetUnfolder]: 61/271 cut-off events. [2022-07-19 21:30:08,487 INFO L130 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2022-07-19 21:30:08,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 271 events. 61/271 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1057 event pairs, 0 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 560. Up to 71 conditions per place. [2022-07-19 21:30:08,489 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 41 selfloop transitions, 19 changer transitions 19/129 dead transitions. [2022-07-19 21:30:08,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 562 flow [2022-07-19 21:30:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:30:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:30:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 885 transitions. [2022-07-19 21:30:08,493 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7242225859247136 [2022-07-19 21:30:08,493 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 885 transitions. [2022-07-19 21:30:08,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 885 transitions. [2022-07-19 21:30:08,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:08,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 885 transitions. [2022-07-19 21:30:08,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.07692307692308) internal successors, (885), 13 states have internal predecessors, (885), 0 states have call successors, (0), 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 21:30:08,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:08,498 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:08,498 INFO L186 Difference]: Start difference. First operand has 99 places, 88 transitions, 249 flow. Second operand 13 states and 885 transitions. [2022-07-19 21:30:08,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 562 flow [2022-07-19 21:30:08,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 548 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-19 21:30:08,502 INFO L242 Difference]: Finished difference. Result has 105 places, 101 transitions, 373 flow [2022-07-19 21:30:08,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2022-07-19 21:30:08,503 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2022-07-19 21:30:08,503 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 373 flow [2022-07-19 21:30:08,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:08,504 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:08,504 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] [2022-07-19 21:30:08,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:30:08,505 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 1 more)] === [2022-07-19 21:30:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1277421210, now seen corresponding path program 3 times [2022-07-19 21:30:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:08,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67312980] [2022-07-19 21:30:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:08,768 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 21:30:08,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:08,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67312980] [2022-07-19 21:30:08,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67312980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:08,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:08,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:08,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790597889] [2022-07-19 21:30:08,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:08,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:08,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:08,773 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-19 21:30:08,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:08,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:08,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-19 21:30:08,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:09,094 INFO L129 PetriNetUnfolder]: 53/280 cut-off events. [2022-07-19 21:30:09,094 INFO L130 PetriNetUnfolder]: For 220/228 co-relation queries the response was YES. [2022-07-19 21:30:09,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 280 events. 53/280 cut-off events. For 220/228 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1186 event pairs, 7 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 670. Up to 49 conditions per place. [2022-07-19 21:30:09,096 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 24 selfloop transitions, 15 changer transitions 41/130 dead transitions. [2022-07-19 21:30:09,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 672 flow [2022-07-19 21:30:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:30:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:30:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 883 transitions. [2022-07-19 21:30:09,099 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7225859247135843 [2022-07-19 21:30:09,099 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 883 transitions. [2022-07-19 21:30:09,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 883 transitions. [2022-07-19 21:30:09,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:09,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 883 transitions. [2022-07-19 21:30:09,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.92307692307692) internal successors, (883), 13 states have internal predecessors, (883), 0 states have call successors, (0), 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 21:30:09,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:09,103 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:09,103 INFO L186 Difference]: Start difference. First operand has 105 places, 101 transitions, 373 flow. Second operand 13 states and 883 transitions. [2022-07-19 21:30:09,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 672 flow [2022-07-19 21:30:09,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 619 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-07-19 21:30:09,107 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 302 flow [2022-07-19 21:30:09,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2022-07-19 21:30:09,107 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2022-07-19 21:30:09,108 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 302 flow [2022-07-19 21:30:09,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:09,108 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:09,108 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] [2022-07-19 21:30:09,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:30:09,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:30:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2093518344, now seen corresponding path program 4 times [2022-07-19 21:30:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:09,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020615899] [2022-07-19 21:30:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:09,339 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 21:30:09,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:09,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020615899] [2022-07-19 21:30:09,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020615899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:09,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:09,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328498519] [2022-07-19 21:30:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:09,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:09,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:09,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-19 21:30:09,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 302 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:09,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:09,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-19 21:30:09,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:09,594 INFO L129 PetriNetUnfolder]: 12/139 cut-off events. [2022-07-19 21:30:09,594 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-07-19 21:30:09,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 139 events. 12/139 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 323 event pairs, 2 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 305. Up to 26 conditions per place. [2022-07-19 21:30:09,595 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 22 selfloop transitions, 6 changer transitions 19/97 dead transitions. [2022-07-19 21:30:09,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 433 flow [2022-07-19 21:30:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:30:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:30:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 865 transitions. [2022-07-19 21:30:09,599 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7078559738134206 [2022-07-19 21:30:09,599 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 865 transitions. [2022-07-19 21:30:09,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 865 transitions. [2022-07-19 21:30:09,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:09,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 865 transitions. [2022-07-19 21:30:09,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.53846153846153) internal successors, (865), 13 states have internal predecessors, (865), 0 states have call successors, (0), 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 21:30:09,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:09,603 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 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 21:30:09,603 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 302 flow. Second operand 13 states and 865 transitions. [2022-07-19 21:30:09,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 433 flow [2022-07-19 21:30:09,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 368 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-07-19 21:30:09,605 INFO L242 Difference]: Finished difference. Result has 107 places, 78 transitions, 221 flow [2022-07-19 21:30:09,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2022-07-19 21:30:09,606 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2022-07-19 21:30:09,606 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 221 flow [2022-07-19 21:30:09,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:09,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:09,608 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] [2022-07-19 21:30:09,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:30:09,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:30:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash 557027142, now seen corresponding path program 5 times [2022-07-19 21:30:09,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:09,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724951246] [2022-07-19 21:30:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:09,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:09,826 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 21:30:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:09,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724951246] [2022-07-19 21:30:09,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724951246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:09,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:09,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:30:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546195478] [2022-07-19 21:30:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:09,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:30:09,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:30:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:30:09,829 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-07-19 21:30:09,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:09,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:09,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-07-19 21:30:09,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:10,159 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2022-07-19 21:30:10,159 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-19 21:30:10,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 89 events. 4/89 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 160. Up to 7 conditions per place. [2022-07-19 21:30:10,159 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-07-19 21:30:10,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 78 transitions, 282 flow [2022-07-19 21:30:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:30:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:30:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2022-07-19 21:30:10,161 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6976950354609929 [2022-07-19 21:30:10,162 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 787 transitions. [2022-07-19 21:30:10,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 787 transitions. [2022-07-19 21:30:10,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:10,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 787 transitions. [2022-07-19 21:30:10,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.58333333333333) internal successors, (787), 12 states have internal predecessors, (787), 0 states have call successors, (0), 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 21:30:10,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 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 21:30:10,165 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 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 21:30:10,165 INFO L186 Difference]: Start difference. First operand has 107 places, 78 transitions, 221 flow. Second operand 12 states and 787 transitions. [2022-07-19 21:30:10,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 78 transitions, 282 flow [2022-07-19 21:30:10,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 247 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-07-19 21:30:10,167 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-07-19 21:30:10,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-07-19 21:30:10,167 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2022-07-19 21:30:10,167 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-07-19 21:30:10,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 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 21:30:10,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-19 21:30:10,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-19 21:30:10,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:30:10,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-19 21:30:10,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:30:10,170 INFO L356 BasicCegarLoop]: Path program histogram: [5] [2022-07-19 21:30:10,173 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:30:10,173 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:30:10,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:30:10 BasicIcfg [2022-07-19 21:30:10,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:30:10,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:30:10,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:30:10,177 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:30:10,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:06" (3/4) ... [2022-07-19 21:30:10,179 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:30:10,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:30:10,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:30:10,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-19 21:30:10,185 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-07-19 21:30:10,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:30:10,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:30:10,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:30:10,213 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:30:10,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:30:10,214 INFO L158 Benchmark]: Toolchain (without parser) took 4512.22ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 76.4MB in the beginning and 106.6MB in the end (delta: -30.1MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-07-19 21:30:10,214 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:30:10,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.38ms. Allocated memory is still 109.1MB. Free memory was 76.4MB in the beginning and 84.1MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:30:10,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.65ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:30:10,214 INFO L158 Benchmark]: Boogie Preprocessor took 27.99ms. Allocated memory is still 109.1MB. Free memory was 82.1MB in the beginning and 80.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:30:10,215 INFO L158 Benchmark]: RCFGBuilder took 318.67ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 68.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:30:10,215 INFO L158 Benchmark]: TraceAbstraction took 3842.87ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 67.9MB in the beginning and 108.7MB in the end (delta: -40.7MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-07-19 21:30:10,215 INFO L158 Benchmark]: Witness Printer took 36.42ms. Allocated memory is still 159.4MB. Free memory was 108.7MB in the beginning and 106.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:30:10,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.38ms. Allocated memory is still 109.1MB. Free memory was 76.4MB in the beginning and 84.1MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.65ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 82.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.99ms. Allocated memory is still 109.1MB. Free memory was 82.1MB in the beginning and 80.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.67ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 68.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3842.87ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 67.9MB in the beginning and 108.7MB in the end (delta: -40.7MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Witness Printer took 36.42ms. Allocated memory is still 159.4MB. Free memory was 108.7MB in the beginning and 106.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 267 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 582 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1296 IncrementalHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 61 mSDtfsCounter, 1296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=2, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 6489 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:30:10,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE