/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi005.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:15:34,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:15:34,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:15:34,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:15:34,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:15:34,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:15:34,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:15:34,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:15:34,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:15:34,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:15:34,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:15:34,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:15:34,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:15:34,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:15:34,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:15:34,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:15:34,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:15:34,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:15:34,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:15:34,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:15:34,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:15:34,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:15:34,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:15:34,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:15:34,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:15:34,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:15:34,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:15:34,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:15:34,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:15:34,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:15:34,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:15:34,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:15:34,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:15:34,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:15:34,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:15:34,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:15:34,994 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-VariableLbe.epf [2023-01-27 18:15:35,018 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:15:35,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:15:35,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:15:35,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:15:35,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:15:35,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:15:35,020 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:15:35,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:15:35,020 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:15:35,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:15:35,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:15:35,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:15:35,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:15:35,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:15:35,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:15:35,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:15:35,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:15:35,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:15:35,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:15:35,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:15:35,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:15:35,023 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:15:35,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:15:35,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:15:35,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:15:35,235 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:15:35,235 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:15:35,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi005.i [2023-01-27 18:15:36,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:15:36,429 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:15:36,430 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i [2023-01-27 18:15:36,443 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eaf0fc93/161e7d3c579b4eff9c31f9751cbc1207/FLAG04ae10880 [2023-01-27 18:15:36,454 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eaf0fc93/161e7d3c579b4eff9c31f9751cbc1207 [2023-01-27 18:15:36,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:15:36,457 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:15:36,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:15:36,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:15:36,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:15:36,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73dcbc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36, skipping insertion in model container [2023-01-27 18:15:36,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:15:36,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:15:36,597 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i[983,996] [2023-01-27 18:15:36,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:15:36,782 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:15:36,792 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i[983,996] [2023-01-27 18:15:36,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:15:36,878 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:15:36,878 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:15:36,883 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:15:36,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36 WrapperNode [2023-01-27 18:15:36,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:15:36,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:15:36,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:15:36,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:15:36,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,945 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2023-01-27 18:15:36,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:15:36,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:15:36,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:15:36,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:15:36,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,976 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:36,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:15:36,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:15:36,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:15:36,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:15:36,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (1/1) ... [2023-01-27 18:15:37,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:15:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:15:37,026 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) [2023-01-27 18:15:37,033 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 [2023-01-27 18:15:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:15:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:15:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:15:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:15:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:15:37,085 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:15:37,180 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:15:37,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:15:37,463 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:15:37,620 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:15:37,621 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:15:37,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:15:37 BoogieIcfgContainer [2023-01-27 18:15:37,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:15:37,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:15:37,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:15:37,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:15:37,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:15:36" (1/3) ... [2023-01-27 18:15:37,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b89480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:15:37, skipping insertion in model container [2023-01-27 18:15:37,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:36" (2/3) ... [2023-01-27 18:15:37,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b89480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:15:37, skipping insertion in model container [2023-01-27 18:15:37,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:15:37" (3/3) ... [2023-01-27 18:15:37,628 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi005.i [2023-01-27 18:15:37,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:15:37,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 18:15:37,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:15:37,688 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:15:37,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 91 transitions, 192 flow [2023-01-27 18:15:37,765 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-01-27 18:15:37,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:37,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-01-27 18:15:37,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 91 transitions, 192 flow [2023-01-27 18:15:37,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 89 transitions, 184 flow [2023-01-27 18:15:37,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:15:37,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 89 transitions, 184 flow [2023-01-27 18:15:37,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 89 transitions, 184 flow [2023-01-27 18:15:37,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 184 flow [2023-01-27 18:15:37,821 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-01-27 18:15:37,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:37,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-01-27 18:15:37,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-01-27 18:15:40,777 INFO L134 LiptonReduction]: Checked pairs total: 2945 [2023-01-27 18:15:40,777 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-01-27 18:15:40,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:15:40,802 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;@4ac35922, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:15:40,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 18:15:40,806 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-27 18:15:40,807 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:40,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:40,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-27 18:15:40,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:40,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 488886995, now seen corresponding path program 1 times [2023-01-27 18:15:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:40,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140457614] [2023-01-27 18:15:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:40,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:15:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:41,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140457614] [2023-01-27 18:15:41,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140457614] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:41,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:41,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:15:41,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205483403] [2023-01-27 18:15:41,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:15:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:41,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:15:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:15:41,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 175 [2023-01-27 18:15:41,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-01-27 18:15:41,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:41,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 175 [2023-01-27 18:15:41,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:41,323 INFO L130 PetriNetUnfolder]: 204/373 cut-off events. [2023-01-27 18:15:41,323 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:15:41,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 373 events. 204/373 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1466 event pairs, 18 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 730. Up to 307 conditions per place. [2023-01-27 18:15:41,326 INFO L137 encePairwiseOnDemand]: 172/175 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-27 18:15:41,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 104 flow [2023-01-27 18:15:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-01-27 18:15:41,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819047619047619 [2023-01-27 18:15:41,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-01-27 18:15:41,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-01-27 18:15:41,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:41,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-01-27 18:15:41,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2023-01-27 18:15:41,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-01-27 18:15:41,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-01-27 18:15:41,351 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 253 transitions. [2023-01-27 18:15:41,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 104 flow [2023-01-27 18:15:41,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:41,354 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 44 flow [2023-01-27 18:15:41,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-01-27 18:15:41,359 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-27 18:15:41,359 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 44 flow [2023-01-27 18:15:41,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-01-27 18:15:41,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:41,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 18:15:41,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:15:41,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-27 18:15:41,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:41,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2024371918, now seen corresponding path program 1 times [2023-01-27 18:15:41,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:41,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796195974] [2023-01-27 18:15:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:41,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 18:15:41,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 18:15:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 18:15:41,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 18:15:41,422 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 18:15:41,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-27 18:15:41,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-27 18:15:41,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-01-27 18:15:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-01-27 18:15:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-27 18:15:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-27 18:15:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-27 18:15:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:15:41,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-27 18:15:41,440 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:15:41,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:15:41,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:15:41 BasicIcfg [2023-01-27 18:15:41,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:15:41,483 INFO L158 Benchmark]: Toolchain (without parser) took 5025.77ms. Allocated memory is still 775.9MB. Free memory was 732.6MB in the beginning and 683.8MB in the end (delta: 48.8MB). Peak memory consumption was 51.8MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,483 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 398.5MB. Free memory is still 345.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:15:41,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.28ms. Allocated memory is still 775.9MB. Free memory was 732.6MB in the beginning and 707.9MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.94ms. Allocated memory is still 775.9MB. Free memory was 707.9MB in the beginning and 704.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,484 INFO L158 Benchmark]: Boogie Preprocessor took 49.41ms. Allocated memory is still 775.9MB. Free memory was 704.9MB in the beginning and 702.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,484 INFO L158 Benchmark]: RCFGBuilder took 626.23ms. Allocated memory is still 775.9MB. Free memory was 702.8MB in the beginning and 727.6MB in the end (delta: -24.9MB). Peak memory consumption was 44.7MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,485 INFO L158 Benchmark]: TraceAbstraction took 3858.43ms. Allocated memory is still 775.9MB. Free memory was 727.6MB in the beginning and 683.8MB in the end (delta: 43.9MB). Peak memory consumption was 44.9MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 398.5MB. Free memory is still 345.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 426.28ms. Allocated memory is still 775.9MB. Free memory was 732.6MB in the beginning and 707.9MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.94ms. Allocated memory is still 775.9MB. Free memory was 707.9MB in the beginning and 704.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.41ms. Allocated memory is still 775.9MB. Free memory was 704.9MB in the beginning and 702.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 626.23ms. Allocated memory is still 775.9MB. Free memory was 702.8MB in the beginning and 727.6MB in the end (delta: -24.9MB). Peak memory consumption was 44.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3858.43ms. Allocated memory is still 775.9MB. Free memory was 727.6MB in the beginning and 683.8MB in the end (delta: 43.9MB). Peak memory consumption was 44.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 94 PlacesBefore, 26 PlacesAfterwards, 89 TransitionsBefore, 19 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 84 TotalNumberOfCompositions, 2945 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1404, independent: 1264, independent conditional: 0, independent unconditional: 1264, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 625, independent: 586, independent conditional: 0, independent unconditional: 586, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1404, independent: 678, independent conditional: 0, independent unconditional: 678, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 625, unknown conditional: 0, unknown unconditional: 625] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff1_thd0; [L728] 0 _Bool y$r_buff1_thd1; [L729] 0 _Bool y$r_buff1_thd2; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1665; [L835] FCALL, FORK 0 pthread_create(&t1665, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1665, ((void *)0), P0, ((void *)0))=-2, t1665={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L836] 0 pthread_t t1666; [L837] FCALL, FORK 0 pthread_create(&t1666, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1666, ((void *)0), P1, ((void *)0))=-1, t1665={5:0}, t1666={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L771] 2 y$w_buff1 = y$w_buff0 [L772] 2 y$w_buff0 = 1 [L773] 2 y$w_buff1_used = y$w_buff0_used [L774] 2 y$w_buff0_used = (_Bool)1 [L775] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L775] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L776] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L777] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L778] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L779] 2 y$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L782] 2 y$w_buff1 = y$w_buff0 [L783] 2 y$w_buff0 = 2 [L784] 2 y$w_buff1_used = y$w_buff0_used [L785] 2 y$w_buff0_used = (_Bool)1 [L786] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND TRUE 2 !expression [L19] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=1, y$w_buff1_used=1, y=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 835]: 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: 837]: 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, 111 locations, 7 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: 3.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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! [2023-01-27 18:15:41,525 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...