/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 --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 11:37:58,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 11:37:58,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 11:37:58,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 11:37:58,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 11:37:58,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 11:37:58,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 11:37:58,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 11:37:58,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 11:37:58,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 11:37:58,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 11:37:58,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 11:37:58,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 11:37:58,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 11:37:58,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 11:37:58,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 11:37:58,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 11:37:58,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 11:37:58,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 11:37:58,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 11:37:58,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 11:37:58,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 11:37:58,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 11:37:58,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 11:37:58,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 11:37:58,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 11:37:58,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 11:37:58,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 11:37:58,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 11:37:58,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 11:37:58,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 11:37:58,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 11:37:58,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 11:37:58,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 11:37:58,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 11:37:58,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 11:37:58,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 11:37:58,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 11:37:58,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 11:37:58,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 11:37:58,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 11:37:58,431 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 [2022-12-12 11:37:58,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 11:37:58,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 11:37:58,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 11:37:58,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 11:37:58,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 11:37:58,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 11:37:58,460 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 11:37:58,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 11:37:58,460 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 11:37:58,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 11:37:58,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 11:37:58,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 11:37:58,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 11:37:58,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 11:37:58,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 11:37:58,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 11:37:58,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 11:37:58,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 11:37:58,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 11:37:58,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 11:37:58,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 11:37:58,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 11:37:58,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 11:37:58,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:37:58,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 11:37:58,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 11:37:58,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 11:37:58,464 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 11:37:58,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 11:37:58,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 11:37:58,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 11:37:58,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 11:37:58,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 11:37:58,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 11:37:58,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 11:37:58,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 11:37:58,817 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 11:37:58,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2022-12-12 11:38:00,022 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 11:38:00,224 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 11:38:00,224 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2022-12-12 11:38:00,249 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c0820f8/6356839d03bf4595a1a5e362901a88a2/FLAGaf5df5bd2 [2022-12-12 11:38:00,259 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c0820f8/6356839d03bf4595a1a5e362901a88a2 [2022-12-12 11:38:00,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 11:38:00,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 11:38:00,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 11:38:00,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 11:38:00,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 11:38:00,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cfde7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00, skipping insertion in model container [2022-12-12 11:38:00,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 11:38:00,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 11:38:00,612 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2022-12-12 11:38:00,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:38:00,629 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 11:38:00,683 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2022-12-12 11:38:00,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:38:00,727 INFO L208 MainTranslator]: Completed translation [2022-12-12 11:38:00,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00 WrapperNode [2022-12-12 11:38:00,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 11:38:00,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 11:38:00,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 11:38:00,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 11:38:00,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,765 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-12-12 11:38:00,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 11:38:00,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 11:38:00,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 11:38:00,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 11:38:00,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 11:38:00,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 11:38:00,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 11:38:00,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 11:38:00,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (1/1) ... [2022-12-12 11:38:00,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:38:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:38:00,816 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 11:38:00,828 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 11:38:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 11:38:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 11:38:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 11:38:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 11:38:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 11:38:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 11:38:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 11:38:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 11:38:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 11:38:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 11:38:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 11:38:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 11:38:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 11:38:00,852 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 11:38:00,970 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 11:38:00,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 11:38:01,212 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 11:38:01,218 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 11:38:01,218 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 11:38:01,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:38:01 BoogieIcfgContainer [2022-12-12 11:38:01,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 11:38:01,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 11:38:01,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 11:38:01,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 11:38:01,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:38:00" (1/3) ... [2022-12-12 11:38:01,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73064e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:38:01, skipping insertion in model container [2022-12-12 11:38:01,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:38:00" (2/3) ... [2022-12-12 11:38:01,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73064e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:38:01, skipping insertion in model container [2022-12-12 11:38:01,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:38:01" (3/3) ... [2022-12-12 11:38:01,226 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-12-12 11:38:01,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 11:38:01,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 11:38:01,243 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 11:38:01,299 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 11:38:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 194 flow [2022-12-12 11:38:01,415 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2022-12-12 11:38:01,415 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 11:38:01,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 1/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-12-12 11:38:01,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 194 flow [2022-12-12 11:38:01,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 166 flow [2022-12-12 11:38:01,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 11:38:01,444 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;@3cfbc85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 11:38:01,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 11:38:01,482 INFO L130 PetriNetUnfolder]: 0/76 cut-off events. [2022-12-12 11:38:01,482 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 11:38:01,482 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:38:01,483 INFO L214 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, 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, 1, 1, 1, 1, 1] [2022-12-12 11:38:01,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 11:38:01,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:38:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1503455470, now seen corresponding path program 1 times [2022-12-12 11:38:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:38:01,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787492760] [2022-12-12 11:38:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:38:01,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:38:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 11:38:01,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 11:38:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 11:38:01,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 11:38:01,875 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 11:38:01,876 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 11:38:01,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 11:38:01,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 11:38:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 11:38:01,881 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-12 11:38:01,890 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 11:38:01,890 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 11:38:01,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:38:01 BasicIcfg [2022-12-12 11:38:01,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 11:38:01,975 INFO L158 Benchmark]: Toolchain (without parser) took 1713.37ms. Allocated memory is still 198.2MB. Free memory was 155.0MB in the beginning and 73.2MB in the end (delta: 81.8MB). Peak memory consumption was 81.8MB. Max. memory is 8.0GB. [2022-12-12 11:38:01,976 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 198.2MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 11:38:01,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.59ms. Allocated memory is still 198.2MB. Free memory was 155.0MB in the beginning and 135.6MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 11:38:01,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.84ms. Allocated memory is still 198.2MB. Free memory was 135.6MB in the beginning and 133.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 11:38:01,977 INFO L158 Benchmark]: Boogie Preprocessor took 19.87ms. Allocated memory is still 198.2MB. Free memory was 133.5MB in the beginning and 131.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 11:38:01,977 INFO L158 Benchmark]: RCFGBuilder took 434.24ms. Allocated memory is still 198.2MB. Free memory was 131.9MB in the beginning and 117.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 11:38:01,978 INFO L158 Benchmark]: TraceAbstraction took 752.39ms. Allocated memory is still 198.2MB. Free memory was 116.7MB in the beginning and 73.2MB in the end (delta: 43.5MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-12-12 11:38:01,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 198.2MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 463.59ms. Allocated memory is still 198.2MB. Free memory was 155.0MB in the beginning and 135.6MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.84ms. Allocated memory is still 198.2MB. Free memory was 135.6MB in the beginning and 133.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.87ms. Allocated memory is still 198.2MB. Free memory was 133.5MB in the beginning and 131.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 434.24ms. Allocated memory is still 198.2MB. Free memory was 131.9MB in the beginning and 117.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 752.39ms. Allocated memory is still 198.2MB. Free memory was 116.7MB in the beginning and 73.2MB in the end (delta: 43.5MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; VAL [ma={3:0}, mb={4:0}] [L693] 0 int data1, data2; VAL [data1=0, data2=0, ma={3:0}, mb={4:0}] [L716] 0 pthread_t t1, t2; VAL [data1=0, data2=0, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L719] 0 data1 = 10 VAL [data1=10, data2=0, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L720] 0 data2 = 10 VAL [data1=10, data2=10, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-1, t1={6:0}, t2={5:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; VAL [\result={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=0, t1={6:0}, t2={5:0}] [L723] 0 \read(t1) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L707] 2 data1+=5 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: 722]: 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. - UnprovableResult [Line: 721]: 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 5 procedures, 119 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 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 11:38:02,003 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...