./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/ldv-races/race-1_2-join.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 b74577f7b762bc71b4ec24b3f1b1d4417fb82a2d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:43:27,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:43:27,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:43:27,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:43:27,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:43:27,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:43:27,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:43:27,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:43:27,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:43:27,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:43:27,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:43:27,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:43:27,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:43:27,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:43:27,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:43:27,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:43:27,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:43:27,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:43:27,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:43:27,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:43:27,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:43:27,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:43:27,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:43:27,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:43:27,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:43:27,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:43:27,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:43:27,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:43:27,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:43:27,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:43:27,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:43:27,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:43:27,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:43:27,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:43:27,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:43:27,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:43:27,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:43:27,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:43:27,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:43:27,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:43:27,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:43:27,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:43:27,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:43:27,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:43:27,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:43:27,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:43:27,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:43:27,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:43:27,622 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:43:27,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:43:27,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:43:27,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:43:27,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:43:27,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:43:27,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:43:27,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:43:27,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:43:27,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b74577f7b762bc71b4ec24b3f1b1d4417fb82a2d [2021-08-26 14:43:27,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:43:27,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:43:27,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:43:27,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:43:27,938 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:43:27,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-08-26 14:43:28,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32a202c8/ed513aadcc0d41a792479907973f48c8/FLAGb8b79b495 [2021-08-26 14:43:28,537 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:43:28,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-08-26 14:43:28,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32a202c8/ed513aadcc0d41a792479907973f48c8/FLAGb8b79b495 [2021-08-26 14:43:29,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32a202c8/ed513aadcc0d41a792479907973f48c8 [2021-08-26 14:43:29,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:43:29,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:43:29,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:43:29,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:43:29,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:43:29,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714a199f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29, skipping insertion in model container [2021-08-26 14:43:29,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:43:29,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:43:29,616 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-08-26 14:43:29,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:43:29,650 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:43:29,686 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-08-26 14:43:29,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:43:29,808 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:43:29,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29 WrapperNode [2021-08-26 14:43:29,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:43:29,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:43:29,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:43:29,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:43:29,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:43:29,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:43:29,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:43:29,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:43:29,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:43:29,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:43:29,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:43:29,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:43:29,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (1/1) ... [2021-08-26 14:43:29,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:43:29,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:43:29,987 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) [2021-08-26 14:43:30,046 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 [2021-08-26 14:43:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-26 14:43:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:43:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-26 14:43:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 14:43:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-26 14:43:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 14:43:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:43:30,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:43:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:43:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-26 14:43:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-26 14:43:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:43:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:43:30,068 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:43:30,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:43:30,516 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-26 14:43:30,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:43:30 BoogieIcfgContainer [2021-08-26 14:43:30,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:43:30,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:43:30,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:43:30,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:43:30,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:43:29" (1/3) ... [2021-08-26 14:43:30,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de8b2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:43:30, skipping insertion in model container [2021-08-26 14:43:30,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:43:29" (2/3) ... [2021-08-26 14:43:30,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de8b2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:43:30, skipping insertion in model container [2021-08-26 14:43:30,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:43:30" (3/3) ... [2021-08-26 14:43:30,524 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-08-26 14:43:30,527 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:43:30,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:43:30,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-26 14:43:30,527 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:43:30,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,558 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,558 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,558 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,558 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,558 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,559 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,559 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,559 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,559 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,561 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,562 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,562 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,562 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,563 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,563 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:43:30,568 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-26 14:43:30,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:43:30,610 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 14:43:30,610 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-26 14:43:30,627 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:43:30,633 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 90 transitions, 188 flow [2021-08-26 14:43:30,635 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 90 transitions, 188 flow [2021-08-26 14:43:30,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-08-26 14:43:30,669 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-08-26 14:43:30,669 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-26 14:43:30,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2021-08-26 14:43:30,673 INFO L116 LiptonReduction]: Number of co-enabled transitions 252 [2021-08-26 14:43:35,191 INFO L131 LiptonReduction]: Checked pairs total: 265 [2021-08-26 14:43:35,191 INFO L133 LiptonReduction]: Total number of compositions: 107 [2021-08-26 14:43:35,214 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-08-26 14:43:35,224 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-08-26 14:43:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 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) [2021-08-26 14:43:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-08-26 14:43:35,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:43:35,243 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-08-26 14:43:35,243 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:43:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:43:35,249 INFO L82 PathProgramCache]: Analyzing trace with hash 371, now seen corresponding path program 1 times [2021-08-26 14:43:35,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:43:35,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944212181] [2021-08-26 14:43:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:43:35,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:43:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:43:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:43:35,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:43:35,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944212181] [2021-08-26 14:43:35,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944212181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:43:35,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:43:35,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-08-26 14:43:35,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813501175] [2021-08-26 14:43:35,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 14:43:35,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:43:35,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 14:43:35,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 14:43:35,575 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-08-26 14:43:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:43:35,581 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-08-26 14:43:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 14:43:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2021-08-26 14:43:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:43:35,586 INFO L225 Difference]: With dead ends: 17 [2021-08-26 14:43:35,586 INFO L226 Difference]: Without dead ends: 8 [2021-08-26 14:43:35,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 14:43:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-08-26 14:43:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-26 14:43:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2021-08-26 14:43:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-08-26 14:43:35,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 1 [2021-08-26 14:43:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:43:35,603 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-08-26 14:43:35,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-08-26 14:43:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-08-26 14:43:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 14:43:35,603 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:43:35,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 14:43:35,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:43:35,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:43:35,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:43:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash 11317780, now seen corresponding path program 1 times [2021-08-26 14:43:35,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:43:35,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162478216] [2021-08-26 14:43:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:43:35,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:43:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:43:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:43:35,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:43:35,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162478216] [2021-08-26 14:43:35,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162478216] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:43:35,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:43:35,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:43:35,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173921449] [2021-08-26 14:43:35,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:43:35,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:43:35,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:43:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:43:35,693 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-08-26 14:43:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:43:35,700 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-08-26 14:43:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:43:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2021-08-26 14:43:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:43:35,701 INFO L225 Difference]: With dead ends: 8 [2021-08-26 14:43:35,701 INFO L226 Difference]: Without dead ends: 6 [2021-08-26 14:43:35,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:43:35,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-08-26 14:43:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-08-26 14:43:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2021-08-26 14:43:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-08-26 14:43:35,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2021-08-26 14:43:35,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:43:35,703 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-08-26 14:43:35,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-08-26 14:43:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-08-26 14:43:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 14:43:35,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:43:35,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 14:43:35,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:43:35,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 14:43:35,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:43:35,704 INFO L82 PathProgramCache]: Analyzing trace with hash 350855975, now seen corresponding path program 1 times [2021-08-26 14:43:35,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:43:35,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841157104] [2021-08-26 14:43:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:43:35,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:43:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 14:43:35,732 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 14:43:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 14:43:35,758 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 14:43:35,758 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 14:43:35,759 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:43:35,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:43:35,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:43:35,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:43:35,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:43:35,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 14:43:35,764 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:43:35,764 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:43:35,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:43:35 BasicIcfg [2021-08-26 14:43:35,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:43:35,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:43:35,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:43:35,777 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:43:35,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:43:30" (3/4) ... [2021-08-26 14:43:35,779 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 14:43:35,801 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:43:35,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:43:35,802 INFO L168 Benchmark]: Toolchain (without parser) took 6783.35 ms. Allocated memory was 56.6 MB in the beginning and 174.1 MB in the end (delta: 117.4 MB). Free memory was 38.0 MB in the beginning and 108.0 MB in the end (delta: -70.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. [2021-08-26 14:43:35,802 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.7 MB in the beginning and 28.7 MB in the end (delta: 21.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:43:35,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.18 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 37.9 MB in the beginning and 54.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-08-26 14:43:35,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.66 ms. Allocated memory is still 79.7 MB. Free memory was 54.1 MB in the beginning and 51.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:43:35,803 INFO L168 Benchmark]: Boogie Preprocessor took 42.67 ms. Allocated memory is still 79.7 MB. Free memory was 51.0 MB in the beginning and 48.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:43:35,804 INFO L168 Benchmark]: RCFGBuilder took 599.08 ms. Allocated memory is still 79.7 MB. Free memory was 48.6 MB in the beginning and 27.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-08-26 14:43:35,804 INFO L168 Benchmark]: TraceAbstraction took 5256.88 ms. Allocated memory was 79.7 MB in the beginning and 174.1 MB in the end (delta: 94.4 MB). Free memory was 26.4 MB in the beginning and 110.1 MB in the end (delta: -83.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:43:35,804 INFO L168 Benchmark]: Witness Printer took 24.00 ms. Allocated memory is still 174.1 MB. Free memory was 110.1 MB in the beginning and 108.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:43:35,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.7 MB in the beginning and 28.7 MB in the end (delta: 21.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 790.18 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 37.9 MB in the beginning and 54.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.66 ms. Allocated memory is still 79.7 MB. Free memory was 54.1 MB in the beginning and 51.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.67 ms. Allocated memory is still 79.7 MB. Free memory was 51.0 MB in the beginning and 48.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 599.08 ms. Allocated memory is still 79.7 MB. Free memory was 48.6 MB in the beginning and 27.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5256.88 ms. Allocated memory was 79.7 MB in the beginning and 174.1 MB in the end (delta: 94.4 MB). Free memory was 26.4 MB in the beginning and 110.1 MB in the end (delta: -83.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 24.00 ms. Allocated memory is still 174.1 MB. Free memory was 110.1 MB in the beginning and 108.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4556.9ms, 89 PlacesBefore, 17 PlacesAfterwards, 90 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 7 FixpointIterations, 72 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 107 TotalNumberOfCompositions, 265 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 232, positive: 212, positive conditional: 0, positive unconditional: 212, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 176, positive: 168, positive conditional: 0, positive unconditional: 168, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 176, positive: 167, positive conditional: 0, positive unconditional: 167, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 232, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 176, unknown conditional: 0, unknown unconditional: 176] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={5:0}, pdev=1, t1={7:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={5:0}, pdev=2, t1={7:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={5:0}, pdev=6, t1={7:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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, 95 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5160.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 18.7ms, AutomataDifference: 29.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4613.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.6ms SsaConstructionTime, 79.9ms SatisfiabilityAnalysisTime, 116.8ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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! [2021-08-26 14:43:35,849 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...