./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 00:20:06,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 00:20:06,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 00:20:06,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 00:20:06,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 00:20:06,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 00:20:06,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 00:20:06,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 00:20:06,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 00:20:06,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 00:20:06,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 00:20:06,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 00:20:06,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 00:20:06,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 00:20:06,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 00:20:06,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 00:20:06,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 00:20:06,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 00:20:06,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 00:20:06,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 00:20:06,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 00:20:06,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 00:20:06,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 00:20:06,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 00:20:06,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 00:20:06,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 00:20:06,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 00:20:06,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 00:20:06,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 00:20:06,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 00:20:06,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 00:20:06,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 00:20:06,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 00:20:06,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 00:20:06,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 00:20:06,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 00:20:06,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 00:20:06,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 00:20:06,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 00:20:06,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 00:20:06,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 00:20:06,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 00:20:06,102 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 00:20:06,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 00:20:06,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 00:20:06,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 00:20:06,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 00:20:06,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 00:20:06,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 00:20:06,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 00:20:06,107 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 00:20:06,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 00:20:06,108 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 00:20:06,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 00:20:06,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 00:20:06,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 00:20:06,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 00:20:06,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 00:20:06,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 00:20:06,109 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 00:20:06,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 00:20:06,109 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 00:20:06,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 00:20:06,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 00:20:06,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 00:20:06,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 00:20:06,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:20:06,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 00:20:06,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 00:20:06,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 00:20:06,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 00:20:06,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 00:20:06,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 00:20:06,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 00:20:06,111 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 00:20:06,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 00:20:06,112 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 00:20:06,112 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 00:20:06,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 00:20:06,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 00:20:06,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 00:20:06,362 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 00:20:06,362 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 00:20:06,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-08-31 00:20:07,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 00:20:07,613 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 00:20:07,613 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-08-31 00:20:07,622 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34875ad8/668aea46f6da4f63906abd4ee2889c76/FLAG05c2dee1f [2023-08-31 00:20:07,634 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34875ad8/668aea46f6da4f63906abd4ee2889c76 [2023-08-31 00:20:07,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 00:20:07,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 00:20:07,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 00:20:07,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 00:20:07,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 00:20:07,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:07,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a91762b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07, skipping insertion in model container [2023-08-31 00:20:07,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:07,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 00:20:07,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 00:20:07,885 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-08-31 00:20:07,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:20:07,922 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 00:20:07,962 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-08-31 00:20:07,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:20:07,993 INFO L208 MainTranslator]: Completed translation [2023-08-31 00:20:07,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07 WrapperNode [2023-08-31 00:20:07,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 00:20:07,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 00:20:07,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 00:20:07,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 00:20:07,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,047 INFO L138 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-08-31 00:20:08,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 00:20:08,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 00:20:08,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 00:20:08,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 00:20:08,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 00:20:08,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 00:20:08,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 00:20:08,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 00:20:08,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (1/1) ... [2023-08-31 00:20:08,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:20:08,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:20:08,101 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) [2023-08-31 00:20:08,124 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 [2023-08-31 00:20:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 00:20:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 00:20:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 00:20:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 00:20:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 00:20:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 00:20:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 00:20:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 00:20:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 00:20:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 00:20:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 00:20:08,135 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 00:20:08,276 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 00:20:08,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 00:20:08,405 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 00:20:08,409 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 00:20:08,410 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-31 00:20:08,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:20:08 BoogieIcfgContainer [2023-08-31 00:20:08,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 00:20:08,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 00:20:08,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 00:20:08,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 00:20:08,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 12:20:07" (1/3) ... [2023-08-31 00:20:08,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e309b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:20:08, skipping insertion in model container [2023-08-31 00:20:08,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:20:07" (2/3) ... [2023-08-31 00:20:08,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e309b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:20:08, skipping insertion in model container [2023-08-31 00:20:08,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:20:08" (3/3) ... [2023-08-31 00:20:08,416 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2023-08-31 00:20:08,422 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 00:20:08,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 00:20:08,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 00:20:08,428 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 00:20:08,465 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 00:20:08,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 102 transitions, 212 flow [2023-08-31 00:20:08,553 INFO L130 PetriNetUnfolder]: 9/101 cut-off events. [2023-08-31 00:20:08,554 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 00:20:08,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 9/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-08-31 00:20:08,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 102 transitions, 212 flow [2023-08-31 00:20:08,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 92 transitions, 187 flow [2023-08-31 00:20:08,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:20:08,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 92 transitions, 187 flow [2023-08-31 00:20:08,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 92 transitions, 187 flow [2023-08-31 00:20:08,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 187 flow [2023-08-31 00:20:08,616 INFO L130 PetriNetUnfolder]: 9/92 cut-off events. [2023-08-31 00:20:08,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:20:08,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-08-31 00:20:08,619 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-08-31 00:20:11,205 INFO L134 LiptonReduction]: Checked pairs total: 3012 [2023-08-31 00:20:11,205 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-31 00:20:11,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:20:11,220 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b5f20de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:20:11,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 00:20:11,222 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-31 00:20:11,222 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:20:11,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:20:11,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 00:20:11,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 00:20:11,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:20:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash 360293902, now seen corresponding path program 1 times [2023-08-31 00:20:11,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:20:11,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617260056] [2023-08-31 00:20:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:20:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:20:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:20:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:20:11,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:20:11,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617260056] [2023-08-31 00:20:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617260056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:20:11,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:20:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 00:20:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116590835] [2023-08-31 00:20:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:20:11,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:20:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:20:11,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:20:11,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:20:11,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 179 [2023-08-31 00:20:11,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 26 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2023-08-31 00:20:11,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:20:11,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 179 [2023-08-31 00:20:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:20:11,736 INFO L130 PetriNetUnfolder]: 41/125 cut-off events. [2023-08-31 00:20:11,736 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:20:11,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 125 events. 41/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 428 event pairs, 13 based on Foata normal form. 5/123 useless extension candidates. Maximal degree in co-relation 226. Up to 62 conditions per place. [2023-08-31 00:20:11,738 INFO L137 encePairwiseOnDemand]: 166/179 looper letters, 13 selfloop transitions, 2 changer transitions 11/27 dead transitions. [2023-08-31 00:20:11,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 27 transitions, 105 flow [2023-08-31 00:20:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 00:20:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 00:20:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-31 00:20:11,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363128491620112 [2023-08-31 00:20:11,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-31 00:20:11,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-31 00:20:11,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:20:11,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-31 00:20:11,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-08-31 00:20:11,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-08-31 00:20:11,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-08-31 00:20:11,767 INFO L175 Difference]: Start difference. First operand has 22 places, 26 transitions, 55 flow. Second operand 3 states and 288 transitions. [2023-08-31 00:20:11,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 27 transitions, 105 flow [2023-08-31 00:20:11,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 00:20:11,770 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 40 flow [2023-08-31 00:20:11,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-08-31 00:20:11,775 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-08-31 00:20:11,775 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 40 flow [2023-08-31 00:20:11,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2023-08-31 00:20:11,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:20:11,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:20:11,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 00:20:11,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 00:20:11,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:20:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash 717087026, now seen corresponding path program 1 times [2023-08-31 00:20:11,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:20:11,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985294768] [2023-08-31 00:20:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:20:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:20:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:20:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:20:11,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:20:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985294768] [2023-08-31 00:20:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985294768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:20:11,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:20:11,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 00:20:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798497643] [2023-08-31 00:20:11,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:20:11,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:20:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:20:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:20:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:20:11,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 179 [2023-08-31 00:20:11,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-08-31 00:20:11,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:20:11,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 179 [2023-08-31 00:20:11,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:20:11,962 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-08-31 00:20:11,962 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 00:20:11,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 41 events. 10/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 4 based on Foata normal form. 7/48 useless extension candidates. Maximal degree in co-relation 86. Up to 21 conditions per place. [2023-08-31 00:20:11,964 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 10 selfloop transitions, 6 changer transitions 1/18 dead transitions. [2023-08-31 00:20:11,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 84 flow [2023-08-31 00:20:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 00:20:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 00:20:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-31 00:20:11,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897579143389199 [2023-08-31 00:20:11,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-31 00:20:11,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-31 00:20:11,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:20:11,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-31 00:20:11,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2023-08-31 00:20:11,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-08-31 00:20:11,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2023-08-31 00:20:11,977 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 40 flow. Second operand 3 states and 263 transitions. [2023-08-31 00:20:11,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 84 flow [2023-08-31 00:20:11,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 78 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 00:20:11,978 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 56 flow [2023-08-31 00:20:11,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-31 00:20:11,979 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-08-31 00:20:11,979 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 56 flow [2023-08-31 00:20:11,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-08-31 00:20:11,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:20:11,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:20:11,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 00:20:11,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 00:20:11,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:20:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 755391486, now seen corresponding path program 1 times [2023-08-31 00:20:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:20:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371222875] [2023-08-31 00:20:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:20:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:20:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:20:12,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 00:20:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:20:12,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 00:20:12,058 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 00:20:12,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-31 00:20:12,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 00:20:12,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 00:20:12,065 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-31 00:20:12,069 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 00:20:12,069 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 00:20:12,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 12:20:12 BasicIcfg [2023-08-31 00:20:12,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 00:20:12,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 00:20:12,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 00:20:12,113 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 00:20:12,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:20:08" (3/4) ... [2023-08-31 00:20:12,115 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-31 00:20:12,140 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 00:20:12,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 00:20:12,141 INFO L158 Benchmark]: Toolchain (without parser) took 4504.18ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 63.1MB in the beginning and 76.2MB in the end (delta: -13.1MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-08-31 00:20:12,141 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 00:20:12,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.28ms. Allocated memory is still 83.9MB. Free memory was 62.9MB in the beginning and 43.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-31 00:20:12,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.27ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 63.0MB in the end (delta: -19.7MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-08-31 00:20:12,145 INFO L158 Benchmark]: Boogie Preprocessor took 24.26ms. Allocated memory is still 83.9MB. Free memory was 62.6MB in the beginning and 61.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 00:20:12,145 INFO L158 Benchmark]: RCFGBuilder took 338.50ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 46.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 00:20:12,145 INFO L158 Benchmark]: TraceAbstraction took 3700.12ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 46.2MB in the beginning and 78.4MB in the end (delta: -32.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-08-31 00:20:12,146 INFO L158 Benchmark]: Witness Printer took 27.23ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 76.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 00:20:12,147 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 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.28ms. Allocated memory is still 83.9MB. Free memory was 62.9MB in the beginning and 43.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.27ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 63.0MB in the end (delta: -19.7MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.26ms. Allocated memory is still 83.9MB. Free memory was 62.6MB in the beginning and 61.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.50ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 46.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3700.12ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 46.2MB in the beginning and 78.4MB in the end (delta: -32.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 27.23ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 76.2MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 87 PlacesBefore, 22 PlacesAfterwards, 92 TransitionsBefore, 26 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 3012 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1298, independent: 1150, independent conditional: 0, independent unconditional: 1150, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 799, independent: 763, independent conditional: 0, independent unconditional: 763, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1298, independent: 387, independent conditional: 0, independent unconditional: 387, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 799, unknown conditional: 0, unknown unconditional: 799] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id; [L708] 0 int i = 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; [L702] EXPR 1 \read(*p) [L702] 1 (*p)++ [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) [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, 123 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: 3.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 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! [2023-08-31 00:20:12,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE