/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:56:35,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:56:35,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:56:35,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:56:35,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:56:35,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:56:35,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:56:35,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:56:35,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:56:35,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:56:35,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:56:35,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:56:35,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:56:35,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:56:35,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:56:35,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:56:35,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:56:35,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:56:35,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:56:35,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:56:35,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:56:35,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:56:35,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:56:35,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:56:35,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:56:35,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:56:35,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:56:35,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:56:35,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:56:35,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-12-06 16:56:35,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:56:35,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:56:35,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:56:35,292 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-NoLbe.epf [2022-12-06 16:56:35,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:56:35,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:56:35,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:56:35,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:56:35,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:56:35,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:56:35,308 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:56:35,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:56:35,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:56:35,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:56:35,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:56:35,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:56:35,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:56:35,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:56:35,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:56:35,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:56:35,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:56:35,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:56:35,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:56:35,574 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:56:35,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2022-12-06 16:56:36,431 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:56:36,708 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:56:36,709 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2022-12-06 16:56:36,718 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec6733a3/1b4082908be3403bbc5cee959eee1f0f/FLAGf4a82d138 [2022-12-06 16:56:36,727 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec6733a3/1b4082908be3403bbc5cee959eee1f0f [2022-12-06 16:56:36,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:56:36,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:56:36,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:56:36,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:56:36,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:56:36,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:56:36" (1/1) ... [2022-12-06 16:56:36,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbff4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:36, skipping insertion in model container [2022-12-06 16:56:36,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:56:36" (1/1) ... [2022-12-06 16:56:36,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:56:36,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:56:36,892 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/13-privatized_18-first-reads_unknown_2_neg.i[1097,1110] [2022-12-06 16:56:37,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:56:37,024 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:56:37,037 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/13-privatized_18-first-reads_unknown_2_neg.i[1097,1110] [2022-12-06 16:56:37,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:56:37,124 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:56:37,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37 WrapperNode [2022-12-06 16:56:37,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:56:37,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:56:37,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:56:37,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:56:37,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,178 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-12-06 16:56:37,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:56:37,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:56:37,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:56:37,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:56:37,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:56:37,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:56:37,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:56:37,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:56:37,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (1/1) ... [2022-12-06 16:56:37,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:56:37,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:56:37,253 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) [2022-12-06 16:56:37,284 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 [2022-12-06 16:56:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 16:56:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:56:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-06 16:56:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:56:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:56:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-06 16:56:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-06 16:56:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:56:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:56:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:56:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:56:37,299 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:56:37,403 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:56:37,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:56:37,486 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:56:37,491 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:56:37,491 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 16:56:37,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:56:37 BoogieIcfgContainer [2022-12-06 16:56:37,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:56:37,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:56:37,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:56:37,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:56:37,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:56:36" (1/3) ... [2022-12-06 16:56:37,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731b010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:56:37, skipping insertion in model container [2022-12-06 16:56:37,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:56:37" (2/3) ... [2022-12-06 16:56:37,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731b010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:56:37, skipping insertion in model container [2022-12-06 16:56:37,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:56:37" (3/3) ... [2022-12-06 16:56:37,497 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2022-12-06 16:56:37,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:56:37,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:56:37,510 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:56:37,542 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-06 16:56:37,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 58 transitions, 124 flow [2022-12-06 16:56:37,587 INFO L130 PetriNetUnfolder]: 2/57 cut-off events. [2022-12-06 16:56:37,587 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:56:37,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 57 events. 2/57 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-12-06 16:56:37,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 58 transitions, 124 flow [2022-12-06 16:56:37,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 43 transitions, 89 flow [2022-12-06 16:56:37,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:56:37,602 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;@3fa2e7bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:56:37,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 16:56:37,616 INFO L130 PetriNetUnfolder]: 1/42 cut-off events. [2022-12-06 16:56:37,616 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:56:37,616 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:56:37,616 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:56:37,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-06 16:56:37,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:56:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1547985198, now seen corresponding path program 1 times [2022-12-06 16:56:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:56:37,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457661029] [2022-12-06 16:56:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:56:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:56:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:56:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:56:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:56:38,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457661029] [2022-12-06 16:56:38,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457661029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:56:38,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:56:38,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:56:38,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753558383] [2022-12-06 16:56:38,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:56:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:56:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:56:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:56:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:56:38,118 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 58 [2022-12-06 16:56:38,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 89 flow. Second operand has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:38,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:56:38,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 58 [2022-12-06 16:56:38,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:56:38,211 INFO L130 PetriNetUnfolder]: 0/47 cut-off events. [2022-12-06 16:56:38,212 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:56:38,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 47 events. 0/47 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-12-06 16:56:38,213 INFO L137 encePairwiseOnDemand]: 52/58 looper letters, 8 selfloop transitions, 2 changer transitions 5/47 dead transitions. [2022-12-06 16:56:38,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 127 flow [2022-12-06 16:56:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 16:56:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 16:56:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2022-12-06 16:56:38,223 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7701149425287356 [2022-12-06 16:56:38,225 INFO L294 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2022-12-06 16:56:38,225 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 127 flow [2022-12-06 16:56:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:56:38,226 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:56:38,226 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:56:38,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:56:38,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-06 16:56:38,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:56:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 892169052, now seen corresponding path program 1 times [2022-12-06 16:56:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:56:38,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926007552] [2022-12-06 16:56:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:56:38,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:56:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 16:56:38,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-06 16:56:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 16:56:38,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-06 16:56:38,278 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-06 16:56:38,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 16:56:38,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 16:56:38,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-06 16:56:38,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:56:38,281 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-06 16:56:38,285 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:56:38,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:56:38,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:56:38 BasicIcfg [2022-12-06 16:56:38,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:56:38,306 INFO L158 Benchmark]: Toolchain (without parser) took 1574.84ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 172.0MB in the beginning and 199.4MB in the end (delta: -27.4MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2022-12-06 16:56:38,306 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory was 173.1MB in the beginning and 173.0MB in the end (delta: 63.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:56:38,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.31ms. Allocated memory is still 196.1MB. Free memory was 172.0MB in the beginning and 153.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-06 16:56:38,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.53ms. Allocated memory is still 196.1MB. Free memory was 153.1MB in the beginning and 151.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:56:38,307 INFO L158 Benchmark]: Boogie Preprocessor took 19.33ms. Allocated memory is still 196.1MB. Free memory was 151.0MB in the beginning and 149.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:56:38,307 INFO L158 Benchmark]: RCFGBuilder took 292.87ms. Allocated memory is still 196.1MB. Free memory was 149.4MB in the beginning and 137.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 16:56:38,308 INFO L158 Benchmark]: TraceAbstraction took 811.60ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 136.3MB in the beginning and 199.4MB in the end (delta: -63.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:56:38,310 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 196.1MB. Free memory was 173.1MB in the beginning and 173.0MB in the end (delta: 63.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 394.31ms. Allocated memory is still 196.1MB. Free memory was 172.0MB in the beginning and 153.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.53ms. Allocated memory is still 196.1MB. Free memory was 153.1MB in the beginning and 151.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.33ms. Allocated memory is still 196.1MB. Free memory was 151.0MB in the beginning and 149.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 292.87ms. Allocated memory is still 196.1MB. Free memory was 149.4MB in the beginning and 137.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 811.60ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 136.3MB in the beginning and 199.4MB in the end (delta: -63.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int glob1 = 0; VAL [glob1=0] [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; VAL [glob1=0, mutex1={3:0}] [L697] 0 pthread_t id; VAL [glob1=0, id={5:0}, mutex1={3:0}] [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L685] 1 int t = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=42, arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=42] [L687] COND TRUE 1 t == 42 VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=42] [L688] 1 glob1 = 1 VAL [arg={0:0}, arg={0:0}, glob1=1, mutex1={3:0}, t=42] [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(!(t == 1)) [L19] COND TRUE 1 !(cond) VAL [\old(cond)=0, cond=0, glob1=1, mutex1={3:0}] [L19] 1 reach_error() VAL [\old(cond)=0, cond=0, glob1=1, mutex1={3:0}] - UnprovableResult [Line: 698]: 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, 79 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=1, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-12-06 16:56:38,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...