./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 35987657 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-?-3598765 [2022-07-21 08:51:46,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:51:46,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:51:46,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:51:46,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:51:46,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:51:46,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:51:46,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:51:46,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:51:46,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:51:46,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:51:46,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:51:46,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:51:46,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:51:46,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:51:46,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:51:46,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:51:46,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:51:46,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:51:46,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:51:46,344 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:51:46,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:51:46,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:51:46,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:51:46,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:51:46,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:51:46,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:51:46,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:51:46,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:51:46,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:51:46,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:51:46,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:51:46,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:51:46,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:51:46,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:51:46,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:51:46,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:51:46,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:51:46,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:51:46,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:51:46,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:51:46,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:51:46,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:51:46,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:51:46,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:51:46,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:51:46,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:51:46,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:51:46,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:51:46,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:51:46,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:51:46,393 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:51:46,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:51:46,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:51:46,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:51:46,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:51:46,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:51:46,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:51:46,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:51:46,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:51:46,398 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:51:46,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:51:46,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:51:46,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:51:46,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:51:46,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:51:46,399 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:51:46,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:51:46,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:51:46,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf [2022-07-21 08:51:46,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:51:46,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:51:46,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:51:46,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:51:46,683 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:51:46,684 INFO L432 ainManager$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 [2022-07-21 08:51:46,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26560d30c/655d45db23034f6a8bd028201f9f3d74/FLAGa206400bc [2022-07-21 08:51:47,104 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:51:47,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_45-escape_racing.i [2022-07-21 08:51:47,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26560d30c/655d45db23034f6a8bd028201f9f3d74/FLAGa206400bc [2022-07-21 08:51:47,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26560d30c/655d45db23034f6a8bd028201f9f3d74 [2022-07-21 08:51:47,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:51:47,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:51:47,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:51:47,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:51:47,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:51:47,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a350196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47, skipping insertion in model container [2022-07-21 08:51:47,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:51:47,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:51:47,764 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] [2022-07-21 08:51:47,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:51:47,819 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:51:47,854 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] [2022-07-21 08:51:47,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:51:47,892 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:51:47,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47 WrapperNode [2022-07-21 08:51:47,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:51:47,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:51:47,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:51:47,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:51:47,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,939 INFO L137 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-07-21 08:51:47,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:51:47,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:51:47,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:51:47,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:51:47,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:51:47,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:51:47,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:51:47,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:51:47,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (1/1) ... [2022-07-21 08:51:47,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:51:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:51:48,020 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) [2022-07-21 08:51:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:51:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:51:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:51:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:51:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:51:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-21 08:51:48,046 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-21 08:51:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:51:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:51:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:51:48,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:51:48,047 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:51:48,028 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 [2022-07-21 08:51:48,162 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:51:48,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:51:48,309 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:51:48,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:51:48,314 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-21 08:51:48,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:51:48 BoogieIcfgContainer [2022-07-21 08:51:48,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:51:48,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:51:48,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:51:48,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:51:48,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:51:47" (1/3) ... [2022-07-21 08:51:48,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402d30af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:51:48, skipping insertion in model container [2022-07-21 08:51:48,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:47" (2/3) ... [2022-07-21 08:51:48,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402d30af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:51:48, skipping insertion in model container [2022-07-21 08:51:48,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:51:48" (3/3) ... [2022-07-21 08:51:48,321 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2022-07-21 08:51:48,324 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:51:48,330 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:51:48,330 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:51:48,330 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:51:48,360 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-21 08:51:48,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 108 transitions, 224 flow [2022-07-21 08:51:48,423 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2022-07-21 08:51:48,424 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:51:48,427 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. [2022-07-21 08:51:48,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 108 transitions, 224 flow [2022-07-21 08:51:48,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 97 transitions, 197 flow [2022-07-21 08:51:48,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:51:48,449 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@587034d4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@30e3634a [2022-07-21 08:51:48,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:51:48,464 INFO L129 PetriNetUnfolder]: 5/88 cut-off events. [2022-07-21 08:51:48,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:51:48,465 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:51:48,465 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] [2022-07-21 08:51:48,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:51:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:51:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1331683409, now seen corresponding path program 1 times [2022-07-21 08:51:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:51:48,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491005785] [2022-07-21 08:51:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:51:48,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:51:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:51:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:51:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:51:48,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491005785] [2022-07-21 08:51:48,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491005785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:51:48,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:51:48,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:51:48,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848868263] [2022-07-21 08:51:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:51:48,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:51:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:51:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:51:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:51:48,817 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 108 [2022-07-21 08:51:48,819 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) [2022-07-21 08:51:48,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:51:48,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 108 [2022-07-21 08:51:48,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:51:49,159 INFO L129 PetriNetUnfolder]: 41/306 cut-off events. [2022-07-21 08:51:49,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:51:49,161 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. [2022-07-21 08:51:49,163 INFO L132 encePairwiseOnDemand]: 89/108 looper letters, 34 selfloop transitions, 4 changer transitions 38/118 dead transitions. [2022-07-21 08:51:49,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 118 transitions, 383 flow [2022-07-21 08:51:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:51:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:51:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 842 transitions. [2022-07-21 08:51:49,180 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5568783068783069 [2022-07-21 08:51:49,180 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 842 transitions. [2022-07-21 08:51:49,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 842 transitions. [2022-07-21 08:51:49,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:51:49,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 842 transitions. [2022-07-21 08:51:49,187 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) [2022-07-21 08:51:49,193 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) [2022-07-21 08:51:49,193 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) [2022-07-21 08:51:49,194 INFO L186 Difference]: Start difference. First operand has 92 places, 97 transitions, 197 flow. Second operand 14 states and 842 transitions. [2022-07-21 08:51:49,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 118 transitions, 383 flow [2022-07-21 08:51:49,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:51:49,212 INFO L242 Difference]: Finished difference. Result has 110 places, 80 transitions, 186 flow [2022-07-21 08:51:49,214 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} [2022-07-21 08:51:49,220 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 18 predicate places. [2022-07-21 08:51:49,220 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 186 flow [2022-07-21 08:51:49,220 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) [2022-07-21 08:51:49,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:51:49,221 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] [2022-07-21 08:51:49,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:51:49,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:51:49,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:51:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 37163589, now seen corresponding path program 1 times [2022-07-21 08:51:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:51:49,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086627159] [2022-07-21 08:51:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:51:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:51:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:51:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:51:49,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:51:49,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086627159] [2022-07-21 08:51:49,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086627159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:51:49,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:51:49,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:51:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856620808] [2022-07-21 08:51:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:51:49,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:51:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:51:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:51:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:51:49,386 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 108 [2022-07-21 08:51:49,387 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) [2022-07-21 08:51:49,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:51:49,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 108 [2022-07-21 08:51:49,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:51:49,460 INFO L129 PetriNetUnfolder]: 8/135 cut-off events. [2022-07-21 08:51:49,460 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-21 08:51:49,467 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. [2022-07-21 08:51:49,469 INFO L132 encePairwiseOnDemand]: 101/108 looper letters, 16 selfloop transitions, 7 changer transitions 1/83 dead transitions. [2022-07-21 08:51:49,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 240 flow [2022-07-21 08:51:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:51:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:51:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2022-07-21 08:51:49,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7351851851851852 [2022-07-21 08:51:49,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2022-07-21 08:51:49,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2022-07-21 08:51:49,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:51:49,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2022-07-21 08:51:49,472 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) [2022-07-21 08:51:49,473 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) [2022-07-21 08:51:49,474 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) [2022-07-21 08:51:49,474 INFO L186 Difference]: Start difference. First operand has 110 places, 80 transitions, 186 flow. Second operand 5 states and 397 transitions. [2022-07-21 08:51:49,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 240 flow [2022-07-21 08:51:49,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 220 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-07-21 08:51:49,478 INFO L242 Difference]: Finished difference. Result has 88 places, 80 transitions, 180 flow [2022-07-21 08:51:49,478 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} [2022-07-21 08:51:49,480 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -4 predicate places. [2022-07-21 08:51:49,481 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 180 flow [2022-07-21 08:51:49,481 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) [2022-07-21 08:51:49,482 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:51:49,482 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] [2022-07-21 08:51:49,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:51:49,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:51:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:51:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash -587546771, now seen corresponding path program 1 times [2022-07-21 08:51:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:51:49,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766600479] [2022-07-21 08:51:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:51:49,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:51:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:51:49,526 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:51:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:51:49,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:51:49,571 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:51:49,575 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:51:49,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-21 08:51:49,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:51:49,577 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 08:51:49,581 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:51:49,583 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:51:49,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:51:49 BasicIcfg [2022-07-21 08:51:49,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:51:49,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:51:49,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:51:49,628 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:51:49,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:51:48" (3/4) ... [2022-07-21 08:51:49,629 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 08:51:49,662 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:51:49,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:51:49,667 INFO L158 Benchmark]: Toolchain (without parser) took 2159.83ms. Allocated memory was 58.7MB in the beginning and 100.7MB in the end (delta: 41.9MB). Free memory was 36.7MB in the beginning and 63.8MB in the end (delta: -27.1MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-07-21 08:51:49,667 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:51:49,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.83ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 36.5MB in the beginning and 59.1MB in the end (delta: -22.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:51:49,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.09ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 57.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:51:49,671 INFO L158 Benchmark]: Boogie Preprocessor took 41.95ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 55.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:51:49,671 INFO L158 Benchmark]: RCFGBuilder took 331.80ms. Allocated memory is still 83.9MB. Free memory was 55.5MB in the beginning and 62.3MB in the end (delta: -6.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-07-21 08:51:49,672 INFO L158 Benchmark]: TraceAbstraction took 1310.39ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.4MB in the beginning and 70.7MB in the end (delta: -9.3MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2022-07-21 08:51:49,672 INFO L158 Benchmark]: Witness Printer took 34.89ms. Allocated memory is still 100.7MB. Free memory was 70.1MB in the beginning and 63.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 08:51:49,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.83ms. Allocated memory was 58.7MB in the beginning and 83.9MB in the end (delta: 25.2MB). Free memory was 36.5MB in the beginning and 59.1MB in the end (delta: -22.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.09ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 57.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.95ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 55.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 331.80ms. Allocated memory is still 83.9MB. Free memory was 55.5MB in the beginning and 62.3MB in the end (delta: -6.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1310.39ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.4MB in the beginning and 70.7MB in the end (delta: -9.3MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Witness Printer took 34.89ms. Allocated memory is still 100.7MB. Free memory was 70.1MB in the beginning and 63.8MB 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: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.2s 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, 0.2s 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, 0.3s 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! [2022-07-21 08:51:49,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE