/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:47:32,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:47:32,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:47:32,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:47:32,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:47:32,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:47:32,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:47:32,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:47:32,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:47:32,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:47:32,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:47:32,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:47:32,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:47:32,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:47:32,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:47:32,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:47:32,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:47:32,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:47:32,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:47:32,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:47:32,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:47:32,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:47:32,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:47:32,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:47:32,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 20:47:32,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:47:32,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:47:32,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:47:32,369 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-SemanticLbe.epf [2022-12-05 20:47:32,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:47:32,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:47:32,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:47:32,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:47:32,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:47:32,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:47:32,399 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:47:32,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:47:32,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:47:32,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:47:32,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:47:32,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:47:32,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:47:32,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:47:32,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:47:32,401 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:47:32,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:47:32,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:47:32,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:47:32,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:47:32,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:47:32,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:47:32,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:47:32,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:32,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:47:32,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:47:32,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:47:32,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:47:32,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:47:32,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:47:32,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:47:32,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:47:32,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:47:32,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:47:32,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:47:32,696 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:47:32,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2022-12-05 20:47:33,809 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:47:34,020 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:47:34,020 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2022-12-05 20:47:34,034 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5372bceba/9cc7ee353958495db2a301f75f368e51/FLAG671a25238 [2022-12-05 20:47:34,043 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5372bceba/9cc7ee353958495db2a301f75f368e51 [2022-12-05 20:47:34,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:47:34,046 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:47:34,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:34,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:47:34,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:47:34,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5514b4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34, skipping insertion in model container [2022-12-05 20:47:34,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:47:34,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:47:34,264 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-12-05 20:47:34,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:34,301 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:47:34,321 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-12-05 20:47:34,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:34,354 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:47:34,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34 WrapperNode [2022-12-05 20:47:34,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:34,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:34,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:47:34,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:47:34,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,402 INFO L138 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-12-05 20:47:34,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:34,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:47:34,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:47:34,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:47:34,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,433 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:47:34,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:47:34,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:47:34,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:47:34,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (1/1) ... [2022-12-05 20:47:34,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:34,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:47:34,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 20:47:34,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 20:47:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:47:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:47:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 20:47:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:47:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:47:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-05 20:47:34,504 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-05 20:47:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:47:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:47:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:47:34,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:47:34,505 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:47:34,619 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:47:34,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:47:34,747 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:47:34,752 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:47:34,752 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-05 20:47:34,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:34 BoogieIcfgContainer [2022-12-05 20:47:34,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:47:34,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:47:34,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:47:34,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:47:34,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:47:34" (1/3) ... [2022-12-05 20:47:34,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0f8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:34, skipping insertion in model container [2022-12-05 20:47:34,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:34" (2/3) ... [2022-12-05 20:47:34,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0f8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:34, skipping insertion in model container [2022-12-05 20:47:34,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:34" (3/3) ... [2022-12-05 20:47:34,759 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2022-12-05 20:47:34,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:47:34,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:47:34,772 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:47:34,806 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-05 20:47:34,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 104 transitions, 216 flow [2022-12-05 20:47:34,860 INFO L130 PetriNetUnfolder]: 9/103 cut-off events. [2022-12-05 20:47:34,860 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 20:47:34,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 9/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 156 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2022-12-05 20:47:34,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 104 transitions, 216 flow [2022-12-05 20:47:34,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 94 transitions, 191 flow [2022-12-05 20:47:34,868 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:47:34,880 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 94 transitions, 191 flow [2022-12-05 20:47:34,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 94 transitions, 191 flow [2022-12-05 20:47:34,901 INFO L130 PetriNetUnfolder]: 9/94 cut-off events. [2022-12-05 20:47:34,901 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:34,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 9/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2022-12-05 20:47:34,904 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 94 transitions, 191 flow [2022-12-05 20:47:34,904 INFO L188 LiptonReduction]: Number of co-enabled transitions 1452 [2022-12-05 20:47:38,734 INFO L203 LiptonReduction]: Total number of compositions: 74 [2022-12-05 20:47:38,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:47:38,758 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;@20ab1d59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:47:38,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-05 20:47:38,766 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-12-05 20:47:38,766 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:38,767 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:38,767 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-05 20:47:38,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:47:38,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:38,772 INFO L85 PathProgramCache]: Analyzing trace with hash 369671217, now seen corresponding path program 1 times [2022-12-05 20:47:38,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:38,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655490755] [2022-12-05 20:47:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:39,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:39,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655490755] [2022-12-05 20:47:39,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655490755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:39,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:39,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:47:39,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845805410] [2022-12-05 20:47:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:39,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:47:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:47:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:47:39,055 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2022-12-05 20:47:39,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-05 20:47:39,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:39,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2022-12-05 20:47:39,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:39,102 INFO L130 PetriNetUnfolder]: 51/143 cut-off events. [2022-12-05 20:47:39,102 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:39,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 143 events. 51/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 523 event pairs, 19 based on Foata normal form. 16/147 useless extension candidates. Maximal degree in co-relation 265. Up to 64 conditions per place. [2022-12-05 20:47:39,103 INFO L137 encePairwiseOnDemand]: 14/28 looper letters, 12 selfloop transitions, 2 changer transitions 12/28 dead transitions. [2022-12-05 20:47:39,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 109 flow [2022-12-05 20:47:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:47:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:47:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-12-05 20:47:39,112 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2022-12-05 20:47:39,113 INFO L175 Difference]: Start difference. First operand has 23 places, 28 transitions, 59 flow. Second operand 3 states and 50 transitions. [2022-12-05 20:47:39,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 109 flow [2022-12-05 20:47:39,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:47:39,116 INFO L231 Difference]: Finished difference. Result has 25 places, 14 transitions, 40 flow [2022-12-05 20:47:39,117 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=14} [2022-12-05 20:47:39,119 INFO L294 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2022-12-05 20:47:39,119 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 14 transitions, 40 flow [2022-12-05 20:47:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-05 20:47:39,119 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:39,120 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:47:39,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:47:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1365472459, now seen corresponding path program 1 times [2022-12-05 20:47:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:39,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306334383] [2022-12-05 20:47:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:39,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:39,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306334383] [2022-12-05 20:47:39,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306334383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:39,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:39,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:47:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176508108] [2022-12-05 20:47:39,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:39,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:47:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:47:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:47:39,189 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-05 20:47:39,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-05 20:47:39,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:39,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-05 20:47:39,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:39,219 INFO L130 PetriNetUnfolder]: 13/47 cut-off events. [2022-12-05 20:47:39,220 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 20:47:39,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 47 events. 13/47 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 5/52 useless extension candidates. Maximal degree in co-relation 102. Up to 26 conditions per place. [2022-12-05 20:47:39,220 INFO L137 encePairwiseOnDemand]: 23/28 looper letters, 14 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2022-12-05 20:47:39,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 94 flow [2022-12-05 20:47:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:47:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:47:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2022-12-05 20:47:39,223 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2022-12-05 20:47:39,223 INFO L175 Difference]: Start difference. First operand has 25 places, 14 transitions, 40 flow. Second operand 3 states and 27 transitions. [2022-12-05 20:47:39,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 94 flow [2022-12-05 20:47:39,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:47:39,224 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 59 flow [2022-12-05 20:47:39,224 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-12-05 20:47:39,225 INFO L294 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2022-12-05 20:47:39,225 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 59 flow [2022-12-05 20:47:39,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-05 20:47:39,225 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:39,225 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:47:39,226 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:47:39,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash -468200847, now seen corresponding path program 1 times [2022-12-05 20:47:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:39,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990128054] [2022-12-05 20:47:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:39,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990128054] [2022-12-05 20:47:39,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990128054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:39,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:39,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:47:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387494544] [2022-12-05 20:47:39,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:39,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:47:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:47:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:47:39,402 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-05 20:47:39,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:47:39,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:39,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-05 20:47:39,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:39,431 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-05 20:47:39,431 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-05 20:47:39,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 16 events. 0/16 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 4/20 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-12-05 20:47:39,432 INFO L137 encePairwiseOnDemand]: 24/28 looper letters, 9 selfloop transitions, 4 changer transitions 0/14 dead transitions. [2022-12-05 20:47:39,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 75 flow [2022-12-05 20:47:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:47:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:47:39,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-12-05 20:47:39,435 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.19642857142857142 [2022-12-05 20:47:39,436 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 59 flow. Second operand 4 states and 22 transitions. [2022-12-05 20:47:39,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 75 flow [2022-12-05 20:47:39,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 63 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 20:47:39,438 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 45 flow [2022-12-05 20:47:39,438 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2022-12-05 20:47:39,439 INFO L294 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2022-12-05 20:47:39,439 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 45 flow [2022-12-05 20:47:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:47:39,439 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:39,439 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:47:39,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 20:47:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1482030950, now seen corresponding path program 1 times [2022-12-05 20:47:39,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:39,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370225617] [2022-12-05 20:47:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:39,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:39,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370225617] [2022-12-05 20:47:39,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370225617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:39,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:39,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:47:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634083666] [2022-12-05 20:47:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:39,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 20:47:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 20:47:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-05 20:47:39,653 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2022-12-05 20:47:39,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 45 flow. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2022-12-05 20:47:39,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:39,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2022-12-05 20:47:39,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:39,722 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-05 20:47:39,722 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 20:47:39,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 15 events. 0/15 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2022-12-05 20:47:39,723 INFO L137 encePairwiseOnDemand]: 21/28 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2022-12-05 20:47:39,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 74 flow [2022-12-05 20:47:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 20:47:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 20:47:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 38 transitions. [2022-12-05 20:47:39,724 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.16964285714285715 [2022-12-05 20:47:39,724 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 45 flow. Second operand 8 states and 38 transitions. [2022-12-05 20:47:39,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 74 flow [2022-12-05 20:47:39,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 20:47:39,724 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2022-12-05 20:47:39,724 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2022-12-05 20:47:39,725 INFO L294 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2022-12-05 20:47:39,725 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2022-12-05 20:47:39,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2022-12-05 20:47:39,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-05 20:47:39,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-05 20:47:39,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:47:39,728 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-05 20:47:39,730 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:47:39,730 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:47:39,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:47:39 BasicIcfg [2022-12-05 20:47:39,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:47:39,732 INFO L158 Benchmark]: Toolchain (without parser) took 5686.18ms. Allocated memory was 163.6MB in the beginning and 250.6MB in the end (delta: 87.0MB). Free memory was 139.3MB in the beginning and 95.2MB in the end (delta: 44.1MB). Peak memory consumption was 131.4MB. Max. memory is 8.0GB. [2022-12-05 20:47:39,733 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 163.6MB. Free memory was 140.2MB in the beginning and 140.2MB in the end (delta: 76.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:47:39,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.49ms. Allocated memory is still 163.6MB. Free memory was 139.3MB in the beginning and 119.6MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-05 20:47:39,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.45ms. Allocated memory is still 163.6MB. Free memory was 119.6MB in the beginning and 117.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:47:39,734 INFO L158 Benchmark]: Boogie Preprocessor took 32.06ms. Allocated memory is still 163.6MB. Free memory was 117.5MB in the beginning and 116.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:47:39,734 INFO L158 Benchmark]: RCFGBuilder took 317.68ms. Allocated memory is still 163.6MB. Free memory was 116.0MB in the beginning and 101.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 20:47:39,734 INFO L158 Benchmark]: TraceAbstraction took 4976.91ms. Allocated memory was 163.6MB in the beginning and 250.6MB in the end (delta: 87.0MB). Free memory was 100.2MB in the beginning and 95.2MB in the end (delta: 5.1MB). Peak memory consumption was 92.6MB. Max. memory is 8.0GB. [2022-12-05 20:47:39,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 163.6MB. Free memory was 140.2MB in the beginning and 140.2MB in the end (delta: 76.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.49ms. Allocated memory is still 163.6MB. Free memory was 139.3MB in the beginning and 119.6MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.45ms. Allocated memory is still 163.6MB. Free memory was 119.6MB in the beginning and 117.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.06ms. Allocated memory is still 163.6MB. Free memory was 117.5MB in the beginning and 116.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 317.68ms. Allocated memory is still 163.6MB. Free memory was 116.0MB in the beginning and 101.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4976.91ms. Allocated memory was 163.6MB in the beginning and 250.6MB in the end (delta: 87.0MB). Free memory was 100.2MB in the beginning and 95.2MB in the end (delta: 5.1MB). Peak memory consumption was 92.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 89 PlacesBefore, 23 PlacesAfterwards, 94 TransitionsBefore, 28 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 37 TrivialYvCompositions, 30 ConcurrentYvCompositions, 0 ChoiceCompositions, 74 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1248, independent: 1177, independent conditional: 1177, independent unconditional: 0, dependent: 71, dependent conditional: 71, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1248, independent: 1177, independent conditional: 0, independent unconditional: 1177, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1248, independent: 1177, independent conditional: 0, independent unconditional: 1177, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1248, independent: 1177, independent conditional: 0, independent unconditional: 1177, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1015, independent: 981, independent conditional: 0, independent unconditional: 981, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1015, independent: 926, independent conditional: 0, independent unconditional: 926, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 89, independent: 55, independent conditional: 0, independent unconditional: 55, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 106, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1248, independent: 196, independent conditional: 0, independent unconditional: 196, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 1015, unknown conditional: 0, unknown unconditional: 1015] , Statistics on independence cache: Total cache size (in pairs): 1671, Positive cache size: 1637, Positive conditional cache size: 0, Positive unconditional cache size: 1637, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 125 locations, 2 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: 4.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 1 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 20:47:39,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...