./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/ldv-races/race-1_2-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:59:37,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:37,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:37,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:37,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:37,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:37,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:37,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:37,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:37,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:37,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:37,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:37,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:37,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:37,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:37,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:37,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:37,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:37,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:37,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:37,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:37,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:37,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:37,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:37,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:37,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:37,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:37,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:37,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:37,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:37,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:37,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:37,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:37,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:37,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:37,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:37,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:37,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:37,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:37,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:37,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:37,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:37,201 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:37,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:37,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:37,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:37,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:37,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:37,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:37,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:37,204 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:37,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:37,205 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:37,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:37,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:37,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:37,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:37,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:37,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:37,206 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:37,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:37,206 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:37,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:37,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:37,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:37,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:37,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:37,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:37,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:37,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:37,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:37,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:37,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:37,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:37,208 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:37,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:37,208 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:37,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:37,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:37,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:37,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:37,456 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:37,456 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:37,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-09-01 09:59:38,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:38,716 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:38,717 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-09-01 09:59:38,734 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02c595a0/a3968f9426bb4fa284be93f15e21456c/FLAG54afe32dc [2023-09-01 09:59:38,748 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02c595a0/a3968f9426bb4fa284be93f15e21456c [2023-09-01 09:59:38,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:38,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:38,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:38,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:38,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:38,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:38" (1/1) ... [2023-09-01 09:59:38,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62012c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:38, skipping insertion in model container [2023-09-01 09:59:38,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:38" (1/1) ... [2023-09-01 09:59:38,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:38,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:59:39,181 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2023-09-01 09:59:39,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:39,202 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:59:39,249 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2023-09-01 09:59:39,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:39,351 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:39,351 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:39,355 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:59:39,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39 WrapperNode [2023-09-01 09:59:39,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:39,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:39,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:59:39,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:59:39,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,416 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-09-01 09:59:39,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:39,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:59:39,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:59:39,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:59:39,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:59:39,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:59:39,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:59:39,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:59:39,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (1/1) ... [2023-09-01 09:59:39,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:39,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:59:39,491 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) [2023-09-01 09:59:39,496 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 [2023-09-01 09:59:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:59:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:59:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:59:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 09:59:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 09:59:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:59:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 09:59:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:59:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:59:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:59:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 09:59:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 09:59:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:59:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:59:39,516 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:59:39,769 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:59:39,770 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:59:39,876 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:59:39,897 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:59:39,897 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:59:39,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:39 BoogieIcfgContainer [2023-09-01 09:59:39,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:59:39,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:59:39,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:59:39,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:59:39,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:38" (1/3) ... [2023-09-01 09:59:39,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b8179c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:39, skipping insertion in model container [2023-09-01 09:59:39,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:39" (2/3) ... [2023-09-01 09:59:39,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b8179c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:39, skipping insertion in model container [2023-09-01 09:59:39,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:39" (3/3) ... [2023-09-01 09:59:39,905 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2023-09-01 09:59:39,910 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:59:39,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:59:39,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 09:59:39,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:59:39,959 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 09:59:39,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 95 transitions, 198 flow [2023-09-01 09:59:40,031 INFO L130 PetriNetUnfolder]: 4/106 cut-off events. [2023-09-01 09:59:40,031 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 09:59:40,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 106 events. 4/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2023-09-01 09:59:40,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 95 transitions, 198 flow [2023-09-01 09:59:40,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 162 flow [2023-09-01 09:59:40,040 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:59:40,049 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 78 transitions, 162 flow [2023-09-01 09:59:40,054 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 78 transitions, 162 flow [2023-09-01 09:59:40,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 162 flow [2023-09-01 09:59:40,082 INFO L130 PetriNetUnfolder]: 1/78 cut-off events. [2023-09-01 09:59:40,083 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 09:59:40,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 1/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-09-01 09:59:40,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 182 [2023-09-01 09:59:42,505 INFO L134 LiptonReduction]: Checked pairs total: 239 [2023-09-01 09:59:42,505 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-09-01 09:59:42,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:59:42,521 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;@4960c70e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:59:42,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 09:59:42,522 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 09:59:42,522 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:42,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:42,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 09:59:42,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 09:59:42,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash 353, now seen corresponding path program 1 times [2023-09-01 09:59:42,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:42,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115239793] [2023-09-01 09:59:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:42,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:42,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115239793] [2023-09-01 09:59:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115239793] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:42,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:42,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 09:59:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158635085] [2023-09-01 09:59:42,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:42,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 09:59:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 09:59:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 09:59:42,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 171 [2023-09-01 09:59:42,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 26 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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) [2023-09-01 09:59:42,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:42,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 171 [2023-09-01 09:59:42,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:42,727 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-09-01 09:59:42,727 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 09:59:42,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 13 events. 3/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 3 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 20. Up to 14 conditions per place. [2023-09-01 09:59:42,728 INFO L137 encePairwiseOnDemand]: 168/171 looper letters, 5 selfloop transitions, 0 changer transitions 2/7 dead transitions. [2023-09-01 09:59:42,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 34 flow [2023-09-01 09:59:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 09:59:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 09:59:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2023-09-01 09:59:42,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2023-09-01 09:59:42,738 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2023-09-01 09:59:42,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2023-09-01 09:59:42,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:42,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2023-09-01 09:59:42,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 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) [2023-09-01 09:59:42,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-09-01 09:59:42,750 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-09-01 09:59:42,751 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 26 flow. Second operand 2 states and 180 transitions. [2023-09-01 09:59:42,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 34 flow [2023-09-01 09:59:42,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:59:42,754 INFO L231 Difference]: Finished difference. Result has 10 places, 5 transitions, 11 flow [2023-09-01 09:59:42,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=11, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2023-09-01 09:59:42,758 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2023-09-01 09:59:42,758 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 11 flow [2023-09-01 09:59:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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) [2023-09-01 09:59:42,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:42,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 09:59:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:59:42,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 09:59:42,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash 10822535, now seen corresponding path program 1 times [2023-09-01 09:59:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:42,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378371508] [2023-09-01 09:59:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:59:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:59:42,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:59:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378371508] [2023-09-01 09:59:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378371508] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:59:42,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:59:42,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:59:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069434878] [2023-09-01 09:59:42,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:59:42,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:59:42,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:59:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:59:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:59:42,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 171 [2023-09-01 09:59:42,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2023-09-01 09:59:42,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:59:42,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 171 [2023-09-01 09:59:42,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:59:42,970 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-09-01 09:59:42,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:59:42,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-09-01 09:59:42,970 INFO L137 encePairwiseOnDemand]: 168/171 looper letters, 3 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2023-09-01 09:59:42,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 25 flow [2023-09-01 09:59:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:59:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:59:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-09-01 09:59:42,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756335282651072 [2023-09-01 09:59:42,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-09-01 09:59:42,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-09-01 09:59:42,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:59:42,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-09-01 09:59:42,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-09-01 09:59:42,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 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) [2023-09-01 09:59:42,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 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) [2023-09-01 09:59:42,975 INFO L175 Difference]: Start difference. First operand has 10 places, 5 transitions, 11 flow. Second operand 3 states and 244 transitions. [2023-09-01 09:59:42,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 25 flow [2023-09-01 09:59:42,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 25 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:59:42,976 INFO L231 Difference]: Finished difference. Result has 11 places, 5 transitions, 19 flow [2023-09-01 09:59:42,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2023-09-01 09:59:42,976 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2023-09-01 09:59:42,976 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 19 flow [2023-09-01 09:59:42,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2023-09-01 09:59:42,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:59:42,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 09:59:42,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:59:42,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 09:59:42,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:59:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash 335502616, now seen corresponding path program 1 times [2023-09-01 09:59:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:59:42,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412799546] [2023-09-01 09:59:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:59:42,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:59:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:59:43,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 09:59:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:59:43,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 09:59:43,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 09:59:43,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 09:59:43,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-09-01 09:59:43,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-09-01 09:59:43,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-09-01 09:59:43,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-09-01 09:59:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:59:43,047 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-09-01 09:59:43,050 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:59:43,050 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:59:43,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:59:43 BasicIcfg [2023-09-01 09:59:43,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:59:43,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:59:43,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:59:43,063 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:59:43,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:39" (3/4) ... [2023-09-01 09:59:43,064 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 09:59:43,085 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:59:43,085 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:59:43,086 INFO L158 Benchmark]: Toolchain (without parser) took 4334.15ms. Allocated memory was 77.6MB in the beginning and 121.6MB in the end (delta: 44.0MB). Free memory was 52.2MB in the beginning and 71.5MB in the end (delta: -19.4MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-09-01 09:59:43,086 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:59:43,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.60ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 52.0MB in the beginning and 52.2MB in the end (delta: -238.1kB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-09-01 09:59:43,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.64ms. Allocated memory is still 94.4MB. Free memory was 52.2MB in the beginning and 48.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:59:43,087 INFO L158 Benchmark]: Boogie Preprocessor took 51.71ms. Allocated memory is still 94.4MB. Free memory was 48.8MB in the beginning and 46.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:59:43,087 INFO L158 Benchmark]: RCFGBuilder took 430.16ms. Allocated memory is still 94.4MB. Free memory was 46.3MB in the beginning and 51.7MB in the end (delta: -5.4MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-09-01 09:59:43,087 INFO L158 Benchmark]: TraceAbstraction took 3161.60ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 50.7MB in the beginning and 73.6MB in the end (delta: -23.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-09-01 09:59:43,087 INFO L158 Benchmark]: Witness Printer took 22.83ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 71.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:59:43,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.60ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 52.0MB in the beginning and 52.2MB in the end (delta: -238.1kB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.64ms. Allocated memory is still 94.4MB. Free memory was 52.2MB in the beginning and 48.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.71ms. Allocated memory is still 94.4MB. Free memory was 48.8MB in the beginning and 46.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.16ms. Allocated memory is still 94.4MB. Free memory was 46.3MB in the beginning and 51.7MB in the end (delta: -5.4MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3161.60ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 50.7MB in the beginning and 73.6MB in the end (delta: -23.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Witness Printer took 22.83ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 71.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 81 PlacesBefore, 14 PlacesAfterwards, 78 TransitionsBefore, 10 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, 239 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 202, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 114, independent: 100, independent conditional: 0, independent unconditional: 100, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 202, independent: 62, independent conditional: 0, independent unconditional: 62, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 114, unknown conditional: 0, unknown unconditional: 114] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 100 locations, 5 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: 3.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-09-01 09:59:43,108 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