/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi005.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:44:38,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:44:38,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:44:38,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:44:38,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:44:38,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:44:38,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:44:38,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:44:38,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:44:38,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:44:38,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:44:38,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:44:38,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:44:38,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:44:38,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:44:38,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:44:38,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:44:38,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 00:44:38,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 00:44:38,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 00:44:38,150 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 [2023-01-28 00:44:38,180 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:44:38,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:44:38,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:44:38,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:44:38,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:44:38,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:44:38,183 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:44:38,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:44:38,183 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:44:38,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:44:38,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:44:38,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:44:38,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:44:38,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:44:38,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:44:38,185 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:44:38,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:44:38,185 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:44:38,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:44:38,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:44:38,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:44:38,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:44:38,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:44:38,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:44:38,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:44:38,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:44:38,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:44:38,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:44:38,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:44:38,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:44:38,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:44:38,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:44:38,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:44:38,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:44:38,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:44:38,402 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:44:38,402 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:44:38,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi005.i [2023-01-28 00:44:39,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:44:39,831 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:44:39,831 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i [2023-01-28 00:44:39,848 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7010b7392/aa2a512a1f774d9fa0301d86433458cc/FLAG6bd2f15b9 [2023-01-28 00:44:39,862 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7010b7392/aa2a512a1f774d9fa0301d86433458cc [2023-01-28 00:44:39,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:44:39,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:44:39,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:44:39,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:44:39,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:44:39,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:44:39" (1/1) ... [2023-01-28 00:44:39,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34165c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:39, skipping insertion in model container [2023-01-28 00:44:39,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:44:39" (1/1) ... [2023-01-28 00:44:39,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:44:39,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:44:40,063 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] [2023-01-28 00:44:40,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:44:40,286 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:44:40,298 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] [2023-01-28 00:44:40,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:44:40,396 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:44:40,396 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:44:40,402 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:44:40,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40 WrapperNode [2023-01-28 00:44:40,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:44:40,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:44:40,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:44:40,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:44:40,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,458 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2023-01-28 00:44:40,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:44:40,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:44:40,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:44:40,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:44:40,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:44:40,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:44:40,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:44:40,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:44:40,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (1/1) ... [2023-01-28 00:44:40,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:44:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:44:40,541 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) [2023-01-28 00:44:40,546 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 [2023-01-28 00:44:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:44:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:44:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:44:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:44:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:44:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:44:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:44:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:44:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:44:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:44:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:44:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:44:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:44:40,579 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:44:40,710 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:44:40,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:44:41,160 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:44:41,318 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:44:41,318 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:44:41,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:44:41 BoogieIcfgContainer [2023-01-28 00:44:41,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:44:41,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:44:41,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:44:41,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:44:41,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:44:39" (1/3) ... [2023-01-28 00:44:41,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b024276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:44:41, skipping insertion in model container [2023-01-28 00:44:41,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:44:40" (2/3) ... [2023-01-28 00:44:41,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b024276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:44:41, skipping insertion in model container [2023-01-28 00:44:41,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:44:41" (3/3) ... [2023-01-28 00:44:41,327 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi005.i [2023-01-28 00:44:41,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:44:41,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-28 00:44:41,343 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:44:41,398 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:44:41,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 91 transitions, 192 flow [2023-01-28 00:44:41,472 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-01-28 00:44:41,472 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:44:41,476 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. [2023-01-28 00:44:41,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 91 transitions, 192 flow [2023-01-28 00:44:41,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 89 transitions, 184 flow [2023-01-28 00:44:41,483 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:44:41,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 89 transitions, 184 flow [2023-01-28 00:44:41,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 89 transitions, 184 flow [2023-01-28 00:44:41,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 184 flow [2023-01-28 00:44:41,513 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-01-28 00:44:41,513 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:44:41,514 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. [2023-01-28 00:44:41,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-01-28 00:44:45,161 INFO L134 LiptonReduction]: Checked pairs total: 2945 [2023-01-28 00:44:45,162 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-01-28 00:44:45,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:44:45,178 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;@674390f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:44:45,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 00:44:45,182 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-28 00:44:45,182 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:44:45,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:44:45,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 00:44:45,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 00:44:45,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:44:45,187 INFO L85 PathProgramCache]: Analyzing trace with hash 488886995, now seen corresponding path program 1 times [2023-01-28 00:44:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:44:45,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641776399] [2023-01-28 00:44:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:44:45,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:44:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:44:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:44:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:44:45,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641776399] [2023-01-28 00:44:45,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641776399] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:44:45,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:44:45,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:44:45,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805200560] [2023-01-28 00:44:45,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:44:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:44:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:44:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:44:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:44:45,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 175 [2023-01-28 00:44:45,629 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) [2023-01-28 00:44:45,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:44:45,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 175 [2023-01-28 00:44:45,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:44:45,821 INFO L130 PetriNetUnfolder]: 204/373 cut-off events. [2023-01-28 00:44:45,821 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:44:45,823 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. [2023-01-28 00:44:45,827 INFO L137 encePairwiseOnDemand]: 172/175 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-28 00:44:45,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 104 flow [2023-01-28 00:44:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:44:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:44:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-01-28 00:44:45,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819047619047619 [2023-01-28 00:44:45,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-01-28 00:44:45,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-01-28 00:44:45,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:44:45,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-01-28 00:44:45,853 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) [2023-01-28 00:44:45,858 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) [2023-01-28 00:44:45,858 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) [2023-01-28 00:44:45,860 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 253 transitions. [2023-01-28 00:44:45,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 104 flow [2023-01-28 00:44:45,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:44:45,864 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 44 flow [2023-01-28 00:44:45,866 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} [2023-01-28 00:44:45,869 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-28 00:44:45,870 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 44 flow [2023-01-28 00:44:45,870 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) [2023-01-28 00:44:45,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:44:45,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 00:44:45,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:44:45,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-01-28 00:44:45,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:44:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2024371918, now seen corresponding path program 1 times [2023-01-28 00:44:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:44:45,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798667513] [2023-01-28 00:44:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:44:45,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:44:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:44:45,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 00:44:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:44:45,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 00:44:45,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 00:44:45,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 00:44:45,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-28 00:44:45,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-01-28 00:44:45,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-01-28 00:44:45,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 00:44:45,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-28 00:44:45,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-28 00:44:45,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:44:45,977 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-28 00:44:45,984 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:44:45,985 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:44:46,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:44:46 BasicIcfg [2023-01-28 00:44:46,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:44:46,012 INFO L158 Benchmark]: Toolchain (without parser) took 6147.39ms. Allocated memory was 352.3MB in the beginning and 434.1MB in the end (delta: 81.8MB). Free memory was 309.4MB in the beginning and 288.9MB in the end (delta: 20.5MB). Peak memory consumption was 104.2MB. Max. memory is 16.0GB. [2023-01-28 00:44:46,013 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory was 213.7MB in the beginning and 213.5MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:44:46,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.86ms. Allocated memory is still 352.3MB. Free memory was 309.2MB in the beginning and 284.4MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 00:44:46,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.77ms. Allocated memory is still 352.3MB. Free memory was 284.4MB in the beginning and 281.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 00:44:46,014 INFO L158 Benchmark]: Boogie Preprocessor took 48.70ms. Allocated memory is still 352.3MB. Free memory was 281.2MB in the beginning and 279.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:44:46,014 INFO L158 Benchmark]: RCFGBuilder took 811.10ms. Allocated memory is still 352.3MB. Free memory was 279.1MB in the beginning and 296.6MB in the end (delta: -17.5MB). Peak memory consumption was 25.6MB. Max. memory is 16.0GB. [2023-01-28 00:44:46,015 INFO L158 Benchmark]: TraceAbstraction took 4689.98ms. Allocated memory was 352.3MB in the beginning and 434.1MB in the end (delta: 81.8MB). Free memory was 295.3MB in the beginning and 288.9MB in the end (delta: 6.4MB). Peak memory consumption was 86.9MB. Max. memory is 16.0GB. [2023-01-28 00:44:46,017 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 255.9MB. Free memory was 213.7MB in the beginning and 213.5MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 536.86ms. Allocated memory is still 352.3MB. Free memory was 309.2MB in the beginning and 284.4MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.77ms. Allocated memory is still 352.3MB. Free memory was 284.4MB in the beginning and 281.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.70ms. Allocated memory is still 352.3MB. Free memory was 281.2MB in the beginning and 279.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 811.10ms. Allocated memory is still 352.3MB. Free memory was 279.1MB in the beginning and 296.6MB in the end (delta: -17.5MB). Peak memory consumption was 25.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4689.98ms. Allocated memory was 352.3MB in the beginning and 434.1MB in the end (delta: 81.8MB). Free memory was 295.3MB in the beginning and 288.9MB in the end (delta: 6.4MB). Peak memory consumption was 86.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 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: 4.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s 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, 0.0s SatisfiabilityAnalysisTime, 0.3s 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! [2023-01-28 00:44:46,036 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...