/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:03:34,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:03:34,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:03:34,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:03:34,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:03:34,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:03:34,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:03:34,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:03:34,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:03:34,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:03:34,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:03:34,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:03:34,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:03:34,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:03:34,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:03:34,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:03:34,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:03:34,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:03:34,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:03:34,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:03:34,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:03:34,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:03:34,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:03:34,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:03:34,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-12 19:03:34,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:03:34,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:03:34,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:03:34,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 19:03:35,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:03:35,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:03:35,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:03:35,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:03:35,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:03:35,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:03:35,025 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:03:35,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:03:35,026 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:03:35,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:03:35,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:03:35,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:03:35,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:03:35,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:03:35,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:03:35,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:03:35,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:03:35,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:03:35,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:03:35,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:03:35,293 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:03:35,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-12 19:03:36,371 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:03:36,618 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:03:36,618 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-12 19:03:36,641 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46305d6f0/75e1e620764744deb3356d512ba17e78/FLAG60138e58f [2022-12-12 19:03:36,658 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46305d6f0/75e1e620764744deb3356d512ba17e78 [2022-12-12 19:03:36,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:03:36,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:03:36,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:03:36,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:03:36,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:03:36,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:03:36" (1/1) ... [2022-12-12 19:03:36,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4433b0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:36, skipping insertion in model container [2022-12-12 19:03:36,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:03:36" (1/1) ... [2022-12-12 19:03:36,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:03:36,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:03:36,832 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2022-12-12 19:03:36,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:03:36,947 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:03:36,957 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2022-12-12 19:03:36,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:03:37,007 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:03:37,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37 WrapperNode [2022-12-12 19:03:37,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:03:37,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:03:37,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:03:37,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:03:37,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,047 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-12 19:03:37,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:03:37,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:03:37,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:03:37,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:03:37,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:03:37,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:03:37,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:03:37,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:03:37,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (1/1) ... [2022-12-12 19:03:37,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:03:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:03:37,101 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) [2022-12-12 19:03:37,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 19:03:37,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:03:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:03:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:03:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 19:03:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 19:03:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:03:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:03:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:03:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:03:37,137 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 19:03:37,229 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:03:37,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:03:37,361 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:03:37,365 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:03:37,365 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 19:03:37,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:03:37 BoogieIcfgContainer [2022-12-12 19:03:37,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:03:37,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:03:37,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:03:37,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:03:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:03:36" (1/3) ... [2022-12-12 19:03:37,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c459a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:03:37, skipping insertion in model container [2022-12-12 19:03:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:37" (2/3) ... [2022-12-12 19:03:37,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c459a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:03:37, skipping insertion in model container [2022-12-12 19:03:37,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:03:37" (3/3) ... [2022-12-12 19:03:37,373 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-12 19:03:37,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:03:37,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 19:03:37,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:03:37,440 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 19:03:37,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 79 flow [2022-12-12 19:03:37,505 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2022-12-12 19:03:37,505 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:37,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2022-12-12 19:03:37,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 79 flow [2022-12-12 19:03:37,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 65 flow [2022-12-12 19:03:37,512 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:03:37,529 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-12 19:03:37,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 65 flow [2022-12-12 19:03:37,549 INFO L130 PetriNetUnfolder]: 0/31 cut-off events. [2022-12-12 19:03:37,549 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:37,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-12-12 19:03:37,551 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-12 19:03:37,551 INFO L226 LiptonReduction]: Number of co-enabled transitions 126 [2022-12-12 19:03:38,718 INFO L241 LiptonReduction]: Total number of compositions: 27 [2022-12-12 19:03:38,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:03:38,732 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=false, 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;@3404adef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:03:38,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 19:03:38,734 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-12 19:03:38,734 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:38,734 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:38,735 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-12 19:03:38,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-12 19:03:38,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash 161610, now seen corresponding path program 1 times [2022-12-12 19:03:38,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:38,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640283178] [2022-12-12 19:03:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 19:03:38,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 19:03:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 19:03:38,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 19:03:38,836 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 19:03:38,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 19:03:38,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 19:03:38,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-12 19:03:38,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:03:38,839 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-12 19:03:38,843 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 19:03:38,843 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 19:03:38,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 07:03:38 BasicIcfg [2022-12-12 19:03:38,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 19:03:38,855 INFO L158 Benchmark]: Toolchain (without parser) took 2193.56ms. Allocated memory was 192.9MB in the beginning and 242.2MB in the end (delta: 49.3MB). Free memory was 167.7MB in the beginning and 157.1MB in the end (delta: 10.7MB). Peak memory consumption was 60.2MB. Max. memory is 8.0GB. [2022-12-12 19:03:38,855 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:03:38,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.01ms. Allocated memory is still 192.9MB. Free memory was 167.4MB in the beginning and 149.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 19:03:38,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.07ms. Allocated memory is still 192.9MB. Free memory was 149.1MB in the beginning and 147.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 19:03:38,856 INFO L158 Benchmark]: Boogie Preprocessor took 23.11ms. Allocated memory is still 192.9MB. Free memory was 147.5MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 19:03:38,857 INFO L158 Benchmark]: RCFGBuilder took 294.65ms. Allocated memory is still 192.9MB. Free memory was 145.9MB in the beginning and 135.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-12 19:03:38,857 INFO L158 Benchmark]: TraceAbstraction took 1485.82ms. Allocated memory was 192.9MB in the beginning and 242.2MB in the end (delta: 49.3MB). Free memory was 133.9MB in the beginning and 157.1MB in the end (delta: -23.2MB). Peak memory consumption was 26.6MB. Max. memory is 8.0GB. [2022-12-12 19:03:38,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 347.01ms. Allocated memory is still 192.9MB. Free memory was 167.4MB in the beginning and 149.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.07ms. Allocated memory is still 192.9MB. Free memory was 149.1MB in the beginning and 147.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.11ms. Allocated memory is still 192.9MB. Free memory was 147.5MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 294.65ms. Allocated memory is still 192.9MB. Free memory was 145.9MB in the beginning and 135.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1485.82ms. Allocated memory was 192.9MB in the beginning and 242.2MB in the end (delta: 49.3MB). Free memory was 133.9MB in the beginning and 157.1MB in the end (delta: -23.2MB). Peak memory consumption was 26.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 35 PlacesBefore, 14 PlacesAfterwards, 31 TransitionsBefore, 10 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 14 ConcurrentYvCompositions, 0 ChoiceCompositions, 27 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 152, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 95, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 95, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 152, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 95, unknown conditional: 0, unknown unconditional: 95] , Statistics on independence cache: Total cache size (in pairs): 304, Positive cache size: 304, Positive conditional cache size: 0, Positive unconditional cache size: 304, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 690]: 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, 52 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-12 19:03:38,886 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...