/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/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:21:07,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:21:07,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:21:07,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:21:07,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:21:08,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:21:08,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:21:08,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:21:08,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:21:08,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:21:08,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:21:08,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:21:08,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:21:08,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:21:08,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:21:08,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:21:08,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:21:08,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:21:08,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:21:08,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:21:08,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:21:08,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:21:08,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:21:08,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:21:08,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:21:08,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:21:08,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:21:08,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:21:08,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:21:08,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:21:08,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:21:08,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:21:08,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:21:08,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:21:08,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:21:08,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:21:08,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:21:08,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:21:08,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:21:08,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:21:08,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:21:08,045 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 12:21:08,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:21:08,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:21:08,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:21:08,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:21:08,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:21:08,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:21:08,077 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:21:08,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:21:08,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:21:08,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:21:08,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:21:08,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:21:08,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:21:08,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:21:08,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:21:08,078 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:21:08,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:21:08,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:21:08,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:21:08,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:21:08,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:21:08,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:21:08,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:21:08,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:21:08,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:21:08,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:21:08,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:21:08,080 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:21:08,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:21:08,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:21:08,080 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:21:08,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:21:08,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:21:08,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:21:08,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:21:08,371 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:21:08,371 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:21:08,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-12 12:21:09,355 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:21:09,620 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:21:09,620 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-12 12:21:09,650 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84aaf0fac/120862f08476480fa87d5ca7cba6ab27/FLAG284df9514 [2022-12-12 12:21:09,663 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84aaf0fac/120862f08476480fa87d5ca7cba6ab27 [2022-12-12 12:21:09,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:21:09,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:21:09,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:21:09,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:21:09,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:21:09,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:21:09" (1/1) ... [2022-12-12 12:21:09,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3379d593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:09, skipping insertion in model container [2022-12-12 12:21:09,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:21:09" (1/1) ... [2022-12-12 12:21:09,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:21:09,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:21:09,844 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2022-12-12 12:21:09,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:21:09,974 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:21:09,984 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2022-12-12 12:21:10,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:21:10,038 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:21:10,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10 WrapperNode [2022-12-12 12:21:10,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:21:10,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:21:10,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:21:10,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:21:10,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,065 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-12 12:21:10,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:21:10,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:21:10,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:21:10,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:21:10,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,077 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:21:10,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:21:10,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:21:10,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:21:10,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (1/1) ... [2022-12-12 12:21:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:21:10,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:21:10,112 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 12:21:10,127 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 12:21:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:21:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:21:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:21:10,162 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 12:21:10,162 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 12:21:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:21:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:21:10,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:21:10,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:21:10,164 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:21:10,285 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:21:10,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:21:10,381 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:21:10,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:21:10,385 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:21:10,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:21:10 BoogieIcfgContainer [2022-12-12 12:21:10,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:21:10,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:21:10,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:21:10,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:21:10,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:21:09" (1/3) ... [2022-12-12 12:21:10,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e14035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:21:10, skipping insertion in model container [2022-12-12 12:21:10,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:21:10" (2/3) ... [2022-12-12 12:21:10,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e14035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:21:10, skipping insertion in model container [2022-12-12 12:21:10,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:21:10" (3/3) ... [2022-12-12 12:21:10,392 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-12 12:21:10,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:21:10,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:21:10,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:21:10,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 12:21:10,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 79 flow [2022-12-12 12:21:10,503 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2022-12-12 12:21:10,504 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:21:10,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2022-12-12 12:21:10,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 79 flow [2022-12-12 12:21:10,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 65 flow [2022-12-12 12:21:10,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:21:10,526 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;@4db2ba0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:21:10,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 12:21:10,545 INFO L130 PetriNetUnfolder]: 0/30 cut-off events. [2022-12-12 12:21:10,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:21:10,546 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:21:10,546 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] [2022-12-12 12:21:10,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-12 12:21:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:21:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1900788141, now seen corresponding path program 1 times [2022-12-12 12:21:10,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:21:10,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498030715] [2022-12-12 12:21:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:21:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:21:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 12:21:10,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 12:21:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 12:21:10,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 12:21:10,725 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 12:21:10,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 12:21:10,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 12:21:10,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-12 12:21:10,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:21:10,729 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-12 12:21:10,735 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:21:10,735 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:21:10,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:21:10 BasicIcfg [2022-12-12 12:21:10,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:21:10,765 INFO L158 Benchmark]: Toolchain (without parser) took 1098.22ms. Allocated memory is still 226.5MB. Free memory was 201.5MB in the beginning and 145.0MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2022-12-12 12:21:10,765 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 226.5MB. Free memory was 202.7MB in the beginning and 202.5MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:21:10,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.07ms. Allocated memory is still 226.5MB. Free memory was 201.1MB in the beginning and 182.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 12:21:10,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.15ms. Allocated memory is still 226.5MB. Free memory was 182.7MB in the beginning and 181.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:21:10,770 INFO L158 Benchmark]: Boogie Preprocessor took 12.42ms. Allocated memory is still 226.5MB. Free memory was 181.1MB in the beginning and 179.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:21:10,770 INFO L158 Benchmark]: RCFGBuilder took 307.43ms. Allocated memory is still 226.5MB. Free memory was 179.6MB in the beginning and 168.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 12:21:10,772 INFO L158 Benchmark]: TraceAbstraction took 375.19ms. Allocated memory is still 226.5MB. Free memory was 167.0MB in the beginning and 145.0MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-12 12:21:10,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 226.5MB. Free memory was 202.7MB in the beginning and 202.5MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 372.07ms. Allocated memory is still 226.5MB. Free memory was 201.1MB in the beginning and 182.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.15ms. Allocated memory is still 226.5MB. Free memory was 182.7MB in the beginning and 181.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.42ms. Allocated memory is still 226.5MB. Free memory was 181.1MB in the beginning and 179.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 307.43ms. Allocated memory is still 226.5MB. Free memory was 179.6MB in the beginning and 168.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 375.19ms. Allocated memory is still 226.5MB. Free memory was 167.0MB in the beginning and 145.0MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. 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: [L688] 0 int x = 3; VAL [x=3] [L689] 0 pthread_t id; VAL [id={3:0}, x=3] [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=3, arg={0:0}, arg={0:0}, x=3] [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) VAL [\old(cond)=0, cond=0] [L19] 1 reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 690]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 52 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 24 NumberOfCodeBlocks, 24 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 12:21:10,809 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...