./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_45-escape_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/goblint-regression/28-race_reach_45-escape_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:17:05,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:17:05,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:17:05,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:17:05,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:17:05,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:17:05,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:17:05,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:17:05,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:17:05,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:17:05,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:17:05,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:17:05,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:17:05,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:17:05,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:17:05,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:17:05,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:17:05,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:17:05,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:17:05,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:17:05,679 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:17:05,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:17:05,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:17:05,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:17:05,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:17:05,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:17:05,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:17:05,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:17:05,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:17:05,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:17:05,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:17:05,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:17:05,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:17:05,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:17:05,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:17:05,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:17:05,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:17:05,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:17:05,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:17:05,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:17:05,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:17:05,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:17:05,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:17:05,717 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:17:05,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:17:05,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:17:05,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:17:05,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:17:05,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:17:05,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:17:05,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:17:05,719 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:17:05,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:17:05,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:17:05,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:17:05,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:17:05,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:17:05,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:17:05,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:17:05,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:17:05,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:17:05,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:17:05,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:17:05,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:17:05,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:17:05,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:17:05,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:17:05,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:17:05,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:17:05,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:17:05,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:17:05,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:17:05,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:17:05,723 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:17:05,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:17:05,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:17:05,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf [2022-07-12 10:17:05,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:17:05,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:17:05,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:17:05,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:17:05,925 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:17:05,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_45-escape_racing.i [2022-07-12 10:17:05,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25289cc59/2c6c200e0a244dfab75a323260c30534/FLAG9cb5d6c7f [2022-07-12 10:17:06,393 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:17:06,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_45-escape_racing.i [2022-07-12 10:17:06,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25289cc59/2c6c200e0a244dfab75a323260c30534/FLAG9cb5d6c7f [2022-07-12 10:17:06,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25289cc59/2c6c200e0a244dfab75a323260c30534 [2022-07-12 10:17:06,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:17:06,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:17:06,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:17:06,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:17:06,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:17:06,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9e5fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06, skipping insertion in model container [2022-07-12 10:17:06,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:17:06,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:17:06,718 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/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2022-07-12 10:17:06,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:17:06,743 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:17:06,768 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/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2022-07-12 10:17:06,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:17:06,797 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:17:06,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06 WrapperNode [2022-07-12 10:17:06,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:17:06,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:17:06,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:17:06,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:17:06,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,831 INFO L137 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-07-12 10:17:06,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:17:06,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:17:06,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:17:06,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:17:06,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:17:06,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:17:06,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:17:06,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:17:06,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (1/1) ... [2022-07-12 10:17:06,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:17:06,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:17:06,894 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) [2022-07-12 10:17:06,915 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 [2022-07-12 10:17:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:17:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:17:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:17:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:17:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:17:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-12 10:17:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-12 10:17:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:17:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:17:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:17:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:17:06,924 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:17:07,019 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:17:07,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:17:07,198 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:17:07,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:17:07,203 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 10:17:07,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:17:07 BoogieIcfgContainer [2022-07-12 10:17:07,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:17:07,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:17:07,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:17:07,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:17:07,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:17:06" (1/3) ... [2022-07-12 10:17:07,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668efaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:17:07, skipping insertion in model container [2022-07-12 10:17:07,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:17:06" (2/3) ... [2022-07-12 10:17:07,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668efaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:17:07, skipping insertion in model container [2022-07-12 10:17:07,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:17:07" (3/3) ... [2022-07-12 10:17:07,210 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2022-07-12 10:17:07,213 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:17:07,219 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:17:07,219 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:17:07,219 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:17:07,259 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:17:07,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 108 transitions, 224 flow [2022-07-12 10:17:07,364 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2022-07-12 10:17:07,364 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:17:07,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 9/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2022-07-12 10:17:07,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 108 transitions, 224 flow [2022-07-12 10:17:07,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 97 transitions, 197 flow [2022-07-12 10:17:07,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:17:07,392 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@12bf92a3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@537a989e [2022-07-12 10:17:07,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 10:17:07,413 INFO L129 PetriNetUnfolder]: 5/88 cut-off events. [2022-07-12 10:17:07,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:17:07,414 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:17:07,415 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] [2022-07-12 10:17:07,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:17:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:17:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1331683409, now seen corresponding path program 1 times [2022-07-12 10:17:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:17:07,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650360900] [2022-07-12 10:17:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:17:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:17:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:17:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:17:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:17:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650360900] [2022-07-12 10:17:07,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650360900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:17:07,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:17:07,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:17:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163904556] [2022-07-12 10:17:07,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:17:07,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:17:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:17:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:17:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:17:07,754 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 108 [2022-07-12 10:17:07,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 97 transitions, 197 flow. Second operand has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 9 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:07,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:17:07,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 108 [2022-07-12 10:17:07,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:17:08,055 INFO L129 PetriNetUnfolder]: 41/306 cut-off events. [2022-07-12 10:17:08,056 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:17:08,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 306 events. 41/306 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1405 event pairs, 10 based on Foata normal form. 96/399 useless extension candidates. Maximal degree in co-relation 370. Up to 29 conditions per place. [2022-07-12 10:17:08,058 INFO L132 encePairwiseOnDemand]: 89/108 looper letters, 34 selfloop transitions, 4 changer transitions 38/118 dead transitions. [2022-07-12 10:17:08,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 118 transitions, 383 flow [2022-07-12 10:17:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:17:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:17:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 842 transitions. [2022-07-12 10:17:08,074 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5568783068783069 [2022-07-12 10:17:08,074 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 842 transitions. [2022-07-12 10:17:08,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 842 transitions. [2022-07-12 10:17:08,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:17:08,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 842 transitions. [2022-07-12 10:17:08,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 108.0) internal successors, (1620), 15 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,095 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 108.0) internal successors, (1620), 15 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,096 INFO L186 Difference]: Start difference. First operand has 92 places, 97 transitions, 197 flow. Second operand 14 states and 842 transitions. [2022-07-12 10:17:08,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 118 transitions, 383 flow [2022-07-12 10:17:08,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:17:08,101 INFO L242 Difference]: Finished difference. Result has 110 places, 80 transitions, 186 flow [2022-07-12 10:17:08,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=186, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2022-07-12 10:17:08,105 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 18 predicate places. [2022-07-12 10:17:08,105 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 186 flow [2022-07-12 10:17:08,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.77777777777778) internal successors, (502), 9 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:17:08,106 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] [2022-07-12 10:17:08,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:17:08,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:17:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:17:08,106 INFO L85 PathProgramCache]: Analyzing trace with hash 37163589, now seen corresponding path program 1 times [2022-07-12 10:17:08,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:17:08,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191127056] [2022-07-12 10:17:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:17:08,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:17:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:17:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:17:08,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:17:08,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191127056] [2022-07-12 10:17:08,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191127056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:17:08,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:17:08,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:17:08,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729718016] [2022-07-12 10:17:08,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:17:08,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:17:08,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:17:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:17:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:17:08,223 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 108 [2022-07-12 10:17:08,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:17:08,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 108 [2022-07-12 10:17:08,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:17:08,288 INFO L129 PetriNetUnfolder]: 8/135 cut-off events. [2022-07-12 10:17:08,288 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-12 10:17:08,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 135 events. 8/135 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 4 based on Foata normal form. 4/139 useless extension candidates. Maximal degree in co-relation 192. Up to 20 conditions per place. [2022-07-12 10:17:08,289 INFO L132 encePairwiseOnDemand]: 101/108 looper letters, 16 selfloop transitions, 7 changer transitions 1/83 dead transitions. [2022-07-12 10:17:08,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 240 flow [2022-07-12 10:17:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:17:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:17:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2022-07-12 10:17:08,291 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7351851851851852 [2022-07-12 10:17:08,291 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2022-07-12 10:17:08,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2022-07-12 10:17:08,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:17:08,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2022-07-12 10:17:08,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,294 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,294 INFO L186 Difference]: Start difference. First operand has 110 places, 80 transitions, 186 flow. Second operand 5 states and 397 transitions. [2022-07-12 10:17:08,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 240 flow [2022-07-12 10:17:08,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 220 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-07-12 10:17:08,297 INFO L242 Difference]: Finished difference. Result has 88 places, 80 transitions, 180 flow [2022-07-12 10:17:08,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2022-07-12 10:17:08,297 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -4 predicate places. [2022-07-12 10:17:08,298 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 180 flow [2022-07-12 10:17:08,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:17:08,298 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:17:08,298 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] [2022-07-12 10:17:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:17:08,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:17:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:17:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -587546771, now seen corresponding path program 1 times [2022-07-12 10:17:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:17:08,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376028703] [2022-07-12 10:17:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:17:08,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:17:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:17:08,327 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:17:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:17:08,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:17:08,394 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:17:08,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 10:17:08,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-12 10:17:08,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:17:08,397 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-12 10:17:08,400 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:17:08,400 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:17:08,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:17:08 BasicIcfg [2022-07-12 10:17:08,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:17:08,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:17:08,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:17:08,441 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:17:08,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:17:07" (3/4) ... [2022-07-12 10:17:08,442 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 10:17:08,480 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:17:08,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:17:08,481 INFO L158 Benchmark]: Toolchain (without parser) took 2057.23ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 72.9MB in the beginning and 95.3MB in the end (delta: -22.4MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-07-12 10:17:08,481 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:17:08,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.73ms. Allocated memory is still 104.9MB. Free memory was 72.6MB in the beginning and 71.9MB in the end (delta: 723.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 10:17:08,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.46ms. Allocated memory is still 104.9MB. Free memory was 71.9MB in the beginning and 69.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:17:08,482 INFO L158 Benchmark]: Boogie Preprocessor took 29.21ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:17:08,483 INFO L158 Benchmark]: RCFGBuilder took 342.87ms. Allocated memory is still 104.9MB. Free memory was 68.5MB in the beginning and 55.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:17:08,487 INFO L158 Benchmark]: TraceAbstraction took 1234.52ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 54.7MB in the beginning and 101.6MB in the end (delta: -46.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-07-12 10:17:08,488 INFO L158 Benchmark]: Witness Printer took 39.86ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 95.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 10:17:08,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.73ms. Allocated memory is still 104.9MB. Free memory was 72.6MB in the beginning and 71.9MB in the end (delta: 723.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.46ms. Allocated memory is still 104.9MB. Free memory was 71.9MB in the beginning and 69.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.21ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.87ms. Allocated memory is still 104.9MB. Free memory was 68.5MB in the beginning and 55.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1234.52ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 54.7MB in the beginning and 101.6MB in the end (delta: -46.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 39.86ms. Allocated memory is still 134.2MB. Free memory was 101.6MB in the beginning and 95.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [__global_lock={3:0}] [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [__global_lock={3:0}, mutex1={4:0}] [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [__global_lock={3:0}, mutex1={4:0}, mutex2={5:0}] [L707] 0 pthread_t id; VAL [__global_lock={3:0}, id={7:0}, mutex1={4:0}, mutex2={5:0}] [L708] 0 int i = 0; VAL [__global_lock={3:0}, i={6:0}, id={7:0}, mutex1={4:0}, mutex2={5:0}] [L709] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={6:0}, i={6:0}, id={7:0}, mutex1={4:0}, mutex2={5:0}, pthread_create(&id, ((void *)0), t_fun, (void *) &i)=-1] [L700] 1 int *p = (int *) arg; VAL [__global_lock={3:0}, arg={6:0}, arg={6:0}, mutex1={4:0}, mutex2={5:0}, p={6:0}] [L702] EXPR 1 \read(*p) VAL [\read(*p)=0, __global_lock={3:0}, arg={6:0}, arg={6:0}, mutex1={4:0}, mutex2={5:0}, p={6:0}] [L702] 1 (*p)++ VAL [(*p)++=0, \read(*p)=0, __global_lock={3:0}, arg={6:0}, arg={6:0}, mutex1={4:0}, mutex2={5:0}, p={6:0}] [L711] EXPR 0 \read(i) VAL [\read(i)=1, __global_lock={3:0}, arg={6:0}, arg={6:0}, i={6:0}, id={7:0}, mutex1={4:0}, mutex2={5:0}, p={6:0}] [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) VAL [\old(cond)=0, __global_lock={3:0}, arg={6:0}, arg={6:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={6:0}] [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={6:0}, arg={6:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={6:0}] - UnprovableResult [Line: 709]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 129 locations, 2 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 153 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 40 mSDtfsCounter, 156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 10:17:08,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE