/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:39:00,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:39:00,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:39:00,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:39:00,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:39:00,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:39:00,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:39:00,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:39:00,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:39:00,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:39:00,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:39:00,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:39:00,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:39:00,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:39:00,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:39:00,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:39:00,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:39:00,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:39:00,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:39:00,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:39:00,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:39:00,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:39:00,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:39:00,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:39:00,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 06:39:00,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:39:00,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:39:00,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:39:00,343 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 06:39:00,364 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:39:00,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:39:00,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:39:00,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:39:00,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:39:00,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:39:00,366 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:39:00,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:39:00,366 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:39:00,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:39:00,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:39:00,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:39:00,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:39:00,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:39:00,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:39:00,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:39:00,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:39:00,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:39:00,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:39:00,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:39:00,572 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:39:00,572 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:39:00,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-01-28 06:39:01,638 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:39:01,836 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:39:01,836 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-01-28 06:39:01,847 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ced39568/f43dc8b26cad48fd8f5c2cc6868efcb2/FLAG5ea0d90b4 [2023-01-28 06:39:02,210 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ced39568/f43dc8b26cad48fd8f5c2cc6868efcb2 [2023-01-28 06:39:02,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:39:02,213 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:39:02,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:39:02,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:39:02,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:39:02,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687a36ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02, skipping insertion in model container [2023-01-28 06:39:02,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:39:02,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:39:02,528 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-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-01-28 06:39:02,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:39:02,539 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:39:02,562 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-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-01-28 06:39:02,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:39:02,594 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:39:02,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02 WrapperNode [2023-01-28 06:39:02,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:39:02,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:39:02,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:39:02,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:39:02,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,627 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-01-28 06:39:02,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:39:02,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:39:02,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:39:02,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:39:02,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:39:02,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:39:02,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:39:02,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:39:02,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (1/1) ... [2023-01-28 06:39:02,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:39:02,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:39:02,696 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 06:39:02,701 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 06:39:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-01-28 06:39:02,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-01-28 06:39:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:39:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:39:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:39:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:39:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:39:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:39:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:39:02,724 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 06:39:02,802 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:39:02,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:39:02,965 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:39:02,970 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:39:02,970 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 06:39:02,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:39:02 BoogieIcfgContainer [2023-01-28 06:39:02,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:39:02,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:39:02,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:39:02,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:39:02,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:39:02" (1/3) ... [2023-01-28 06:39:02,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acb5174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:39:02, skipping insertion in model container [2023-01-28 06:39:02,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:39:02" (2/3) ... [2023-01-28 06:39:02,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acb5174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:39:02, skipping insertion in model container [2023-01-28 06:39:02,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:39:02" (3/3) ... [2023-01-28 06:39:02,977 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-01-28 06:39:03,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:39:03,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 06:39:03,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:39:03,087 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 06:39:03,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 67 transitions, 139 flow [2023-01-28 06:39:03,162 INFO L130 PetriNetUnfolder]: 10/77 cut-off events. [2023-01-28 06:39:03,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:39:03,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 10/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-01-28 06:39:03,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 67 transitions, 139 flow [2023-01-28 06:39:03,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 67 transitions, 139 flow [2023-01-28 06:39:03,172 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:39:03,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 67 transitions, 139 flow [2023-01-28 06:39:03,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 67 transitions, 139 flow [2023-01-28 06:39:03,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 67 transitions, 139 flow [2023-01-28 06:39:03,206 INFO L130 PetriNetUnfolder]: 10/77 cut-off events. [2023-01-28 06:39:03,207 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:39:03,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 10/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-01-28 06:39:03,209 INFO L119 LiptonReduction]: Number of co-enabled transitions 1118 [2023-01-28 06:39:04,390 INFO L134 LiptonReduction]: Checked pairs total: 902 [2023-01-28 06:39:04,390 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-01-28 06:39:04,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:39:04,402 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;@2212b371, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:39:04,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 06:39:04,405 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-01-28 06:39:04,405 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:39:04,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:39:04,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 06:39:04,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-28 06:39:04,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:39:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 428611895, now seen corresponding path program 1 times [2023-01-28 06:39:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:39:04,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082705251] [2023-01-28 06:39:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:39:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:39:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:39:04,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 06:39:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:39:04,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 06:39:04,518 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 06:39:04,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 06:39:04,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-01-28 06:39:04,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:39:04,520 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 06:39:04,521 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN (1/2) [2023-01-28 06:39:04,524 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:39:04,524 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:39:04,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:39:04 BasicIcfg [2023-01-28 06:39:04,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:39:04,535 INFO L158 Benchmark]: Toolchain (without parser) took 2321.89ms. Allocated memory is still 585.1MB. Free memory was 544.7MB in the beginning and 497.6MB in the end (delta: 47.2MB). Peak memory consumption was 47.7MB. Max. memory is 16.0GB. [2023-01-28 06:39:04,536 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 369.1MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:39:04,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.53ms. Allocated memory is still 585.1MB. Free memory was 544.7MB in the beginning and 525.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 06:39:04,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.74ms. Allocated memory is still 585.1MB. Free memory was 525.9MB in the beginning and 523.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:39:04,536 INFO L158 Benchmark]: Boogie Preprocessor took 29.89ms. Allocated memory is still 585.1MB. Free memory was 523.8MB in the beginning and 522.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:39:04,537 INFO L158 Benchmark]: RCFGBuilder took 313.76ms. Allocated memory is still 585.1MB. Free memory was 522.6MB in the beginning and 509.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 06:39:04,537 INFO L158 Benchmark]: TraceAbstraction took 1561.59ms. Allocated memory is still 585.1MB. Free memory was 509.1MB in the beginning and 497.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.1MB. Max. memory is 16.0GB. [2023-01-28 06:39:04,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 369.1MB. Free memory is still 316.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 379.53ms. Allocated memory is still 585.1MB. Free memory was 544.7MB in the beginning and 525.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.74ms. Allocated memory is still 585.1MB. Free memory was 525.9MB in the beginning and 523.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.89ms. Allocated memory is still 585.1MB. Free memory was 523.8MB in the beginning and 522.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 313.76ms. Allocated memory is still 585.1MB. Free memory was 522.6MB in the beginning and 509.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1561.59ms. Allocated memory is still 585.1MB. Free memory was 509.1MB in the beginning and 497.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 61 PlacesBefore, 15 PlacesAfterwards, 67 TransitionsBefore, 17 TransitionsAfterwards, 1118 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 57 TotalNumberOfCompositions, 902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 902, independent: 902, independent conditional: 0, independent unconditional: 902, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 550, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 902, independent: 352, independent conditional: 0, independent unconditional: 352, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 550, unknown conditional: 0, unknown unconditional: 550] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i