/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-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 06:51:06,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 06:51:06,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 06:51:06,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 06:51:06,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 06:51:06,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 06:51:06,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 06:51:06,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 06:51:06,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 06:51:06,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 06:51:06,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 06:51:06,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 06:51:06,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 06:51:06,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 06:51:06,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 06:51:06,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 06:51:06,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 06:51:06,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 06:51:06,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 06:51:06,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 06:51:06,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 06:51:06,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 06:51:06,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 06:51:06,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 06:51:06,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-13 06:51:06,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 06:51:06,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 06:51:06,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 06:51:06,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 06:51:06,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 06:51:06,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 06:51:06,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 06:51:06,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 06:51:06,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 06:51:06,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 06:51:06,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 06:51:06,912 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-RepeatedSemanticLbe.epf [2022-12-13 06:51:06,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 06:51:06,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 06:51:06,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 06:51:06,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 06:51:06,946 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 06:51:06,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 06:51:06,946 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 06:51:06,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 06:51:06,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 06:51:06,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 06:51:06,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 06:51:06,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 06:51:06,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 06:51:06,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 06:51:06,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 06:51:06,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 06:51:06,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 06:51:06,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 06:51:06,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 06:51:06,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 06:51:06,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 06:51:06,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:51:06,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 06:51:06,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 06:51:06,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 06:51:06,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 06:51:06,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 06:51:06,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 06:51:06,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-13 06:51:07,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 06:51:07,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 06:51:07,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 06:51:07,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 06:51:07,262 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 06:51:07,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2022-12-13 06:51:08,394 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 06:51:08,626 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 06:51:08,626 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2022-12-13 06:51:08,636 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ec5f603/042439d3635c46cba6bb08b149370daf/FLAG968d36f3c [2022-12-13 06:51:08,645 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ec5f603/042439d3635c46cba6bb08b149370daf [2022-12-13 06:51:08,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 06:51:08,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 06:51:08,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 06:51:08,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 06:51:08,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 06:51:08,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:08" (1/1) ... [2022-12-13 06:51:08,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f813be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:08, skipping insertion in model container [2022-12-13 06:51:08,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:08" (1/1) ... [2022-12-13 06:51:08,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 06:51:08,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 06:51:08,819 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_17-traces-rpb-litmus_unknown_1_pos.i[1098,1111] [2022-12-13 06:51:08,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:51:08,952 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 06:51:08,963 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_17-traces-rpb-litmus_unknown_1_pos.i[1098,1111] [2022-12-13 06:51:08,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:51:09,019 INFO L208 MainTranslator]: Completed translation [2022-12-13 06:51:09,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09 WrapperNode [2022-12-13 06:51:09,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 06:51:09,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 06:51:09,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 06:51:09,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 06:51:09,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,064 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-12-13 06:51:09,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 06:51:09,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 06:51:09,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 06:51:09,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 06:51:09,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 06:51:09,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 06:51:09,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 06:51:09,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 06:51:09,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (1/1) ... [2022-12-13 06:51:09,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:51:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 06:51:09,131 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) [2022-12-13 06:51:09,138 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 [2022-12-13 06:51:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 06:51:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 06:51:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 06:51:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 06:51:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 06:51:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 06:51:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 06:51:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 06:51:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 06:51:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 06:51:09,164 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 06:51:09,263 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 06:51:09,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 06:51:09,376 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 06:51:09,393 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 06:51:09,393 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 06:51:09,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:09 BoogieIcfgContainer [2022-12-13 06:51:09,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 06:51:09,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 06:51:09,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 06:51:09,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 06:51:09,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:51:08" (1/3) ... [2022-12-13 06:51:09,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bcbd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:09, skipping insertion in model container [2022-12-13 06:51:09,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:09" (2/3) ... [2022-12-13 06:51:09,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bcbd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:09, skipping insertion in model container [2022-12-13 06:51:09,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:09" (3/3) ... [2022-12-13 06:51:09,401 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2022-12-13 06:51:09,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 06:51:09,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 06:51:09,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 06:51:09,462 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 06:51:09,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 149 flow [2022-12-13 06:51:09,534 INFO L130 PetriNetUnfolder]: 2/71 cut-off events. [2022-12-13 06:51:09,535 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-12-13 06:51:09,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 72 transitions, 149 flow [2022-12-13 06:51:09,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 61 transitions, 125 flow [2022-12-13 06:51:09,550 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:51:09,569 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 61 transitions, 125 flow [2022-12-13 06:51:09,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 125 flow [2022-12-13 06:51:09,606 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-12-13 06:51:09,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-12-13 06:51:09,609 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 61 transitions, 125 flow [2022-12-13 06:51:09,609 INFO L226 LiptonReduction]: Number of co-enabled transitions 360 [2022-12-13 06:51:12,058 INFO L241 LiptonReduction]: Total number of compositions: 48 [2022-12-13 06:51:12,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 06:51:12,097 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=REPEATED_LIPTON_PN, 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;@310ea97f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 06:51:12,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 06:51:12,100 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-13 06:51:12,100 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:12,100 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:51:12,115 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 06:51:12,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 06:51:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:51:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash 232260390, now seen corresponding path program 1 times [2022-12-13 06:51:12,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:51:12,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930547581] [2022-12-13 06:51:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:51:12,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:51:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 06:51:12,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 06:51:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 06:51:12,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 06:51:12,251 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 06:51:12,252 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-13 06:51:12,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-13 06:51:12,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 06:51:12,254 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 06:51:12,258 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 06:51:12,258 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 06:51:12,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:51:12 BasicIcfg [2022-12-13 06:51:12,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 06:51:12,271 INFO L158 Benchmark]: Toolchain (without parser) took 3623.36ms. Allocated memory was 164.6MB in the beginning and 205.5MB in the end (delta: 40.9MB). Free memory was 140.0MB in the beginning and 93.6MB in the end (delta: 46.5MB). Peak memory consumption was 88.4MB. Max. memory is 8.0GB. [2022-12-13 06:51:12,272 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 164.6MB. Free memory was 140.6MB in the beginning and 140.5MB in the end (delta: 82.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 06:51:12,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.64ms. Allocated memory is still 164.6MB. Free memory was 139.5MB in the beginning and 120.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-13 06:51:12,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.27ms. Allocated memory is still 164.6MB. Free memory was 120.6MB in the beginning and 119.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 06:51:12,273 INFO L158 Benchmark]: Boogie Preprocessor took 26.72ms. Allocated memory is still 164.6MB. Free memory was 119.0MB in the beginning and 117.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 06:51:12,273 INFO L158 Benchmark]: RCFGBuilder took 302.96ms. Allocated memory is still 164.6MB. Free memory was 117.5MB in the beginning and 104.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-13 06:51:12,273 INFO L158 Benchmark]: TraceAbstraction took 2873.88ms. Allocated memory was 164.6MB in the beginning and 205.5MB in the end (delta: 40.9MB). Free memory was 103.3MB in the beginning and 93.6MB in the end (delta: 9.8MB). Peak memory consumption was 51.7MB. Max. memory is 8.0GB. [2022-12-13 06:51:12,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 164.6MB. Free memory was 140.6MB in the beginning and 140.5MB in the end (delta: 82.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 371.64ms. Allocated memory is still 164.6MB. Free memory was 139.5MB in the beginning and 120.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.27ms. Allocated memory is still 164.6MB. Free memory was 120.6MB in the beginning and 119.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.72ms. Allocated memory is still 164.6MB. Free memory was 119.0MB in the beginning and 117.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 302.96ms. Allocated memory is still 164.6MB. Free memory was 117.5MB in the beginning and 104.4MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2873.88ms. Allocated memory was 164.6MB in the beginning and 205.5MB in the end (delta: 40.9MB). Free memory was 103.3MB in the beginning and 93.6MB in the end (delta: 9.8MB). Peak memory consumption was 51.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 64 PlacesBefore, 22 PlacesAfterwards, 61 TransitionsBefore, 19 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 16 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 424, independent: 365, independent conditional: 365, independent unconditional: 0, dependent: 59, dependent conditional: 59, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 424, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 424, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 424, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 291, independent: 260, independent conditional: 0, independent unconditional: 260, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 291, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 81, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 424, independent: 105, independent conditional: 0, independent unconditional: 105, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 291, unknown conditional: 0, unknown unconditional: 291] , Statistics on independence cache: Total cache size (in pairs): 395, Positive cache size: 364, Positive conditional cache size: 0, Positive unconditional cache size: 364, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, 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: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, arg={0:0}, B={4:0}, g=42, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, r=0] [L700] COND FALSE 0 !(\read(r)) [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(t == 17) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [\old(cond)=0, A={3:0}, arg={0:0}, B={4:0}, cond=0, g=42] - UnprovableResult [Line: 697]: 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, 83 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 5 NumberOfCodeBlocks, 5 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! [2022-12-13 06:51:12,296 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...