./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:23:34,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:23:34,986 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:23:34,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:23:34,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:23:35,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:23:35,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:23:35,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:23:35,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:23:35,020 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:23:35,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:23:35,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:23:35,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:23:35,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:23:35,022 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:23:35,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:23:35,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:23:35,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:23:35,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:23:35,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:23:35,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:23:35,029 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:23:35,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:23:35,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:23:35,030 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:23:35,030 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:23:35,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:23:35,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:23:35,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:23:35,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:23:35,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:23:35,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:23:35,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:23:35,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:23:35,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:23:35,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:23:35,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:23:35,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:23:35,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:23:35,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:23:35,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:23:35,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:23:35,043 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 [2024-10-24 12:23:35,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:23:35,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:23:35,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:23:35,407 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:23:35,407 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:23:35,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2024-10-24 12:23:37,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:23:37,326 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:23:37,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2024-10-24 12:23:37,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef476867a/7177bc87eab54ddca5e807694097c434/FLAG67bd56edb [2024-10-24 12:23:37,363 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef476867a/7177bc87eab54ddca5e807694097c434 [2024-10-24 12:23:37,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:23:37,366 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:23:37,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:23:37,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:23:37,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:23:37,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:23:37" (1/1) ... [2024-10-24 12:23:37,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7a977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:37, skipping insertion in model container [2024-10-24 12:23:37,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:23:37" (1/1) ... [2024-10-24 12:23:37,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:23:37,843 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2024-10-24 12:23:37,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:23:37,891 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:23:37,936 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2024-10-24 12:23:37,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:23:38,001 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:23:38,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38 WrapperNode [2024-10-24 12:23:38,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:23:38,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:23:38,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:23:38,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:23:38,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,072 INFO L138 Inliner]: procedures = 171, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-10-24 12:23:38,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:23:38,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:23:38,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:23:38,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:23:38,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,120 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 5, 6]. 33 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 5, 1]. The 2 writes are split as follows [0, 0, 0, 2]. [2024-10-24 12:23:38,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:23:38,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:23:38,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:23:38,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:23:38,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (1/1) ... [2024-10-24 12:23:38,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:23:38,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:23:38,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:23:38,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:23:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:23:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:23:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:23:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:23:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:23:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:23:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:23:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:23:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:23:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:23:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:23:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 12:23:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 12:23:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:23:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:23:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:23:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:23:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:23:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:23:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:23:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:23:38,267 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:23:38,474 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:23:38,476 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:23:38,704 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:23:38,704 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:23:38,886 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:23:38,886 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-24 12:23:38,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:23:38 BoogieIcfgContainer [2024-10-24 12:23:38,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:23:38,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:23:38,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:23:38,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:23:38,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:23:37" (1/3) ... [2024-10-24 12:23:38,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4699379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:23:38, skipping insertion in model container [2024-10-24 12:23:38,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:23:38" (2/3) ... [2024-10-24 12:23:38,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4699379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:23:38, skipping insertion in model container [2024-10-24 12:23:38,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:23:38" (3/3) ... [2024-10-24 12:23:38,899 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2024-10-24 12:23:38,915 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:23:38,915 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:23:38,916 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:23:38,962 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 12:23:39,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 45 transitions, 97 flow [2024-10-24 12:23:39,040 INFO L124 PetriNetUnfolderBase]: 9/44 cut-off events. [2024-10-24 12:23:39,041 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:23:39,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 44 events. 9/44 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 40. Up to 3 conditions per place. [2024-10-24 12:23:39,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 45 transitions, 97 flow [2024-10-24 12:23:39,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 42 transitions, 87 flow [2024-10-24 12:23:39,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:23:39,077 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@51e376f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:23:39,077 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 12:23:39,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:23:39,094 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-10-24 12:23:39,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:23:39,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:23:39,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:23:39,099 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:23:39,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:23:39,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1116242221, now seen corresponding path program 1 times [2024-10-24 12:23:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:23:39,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287789460] [2024-10-24 12:23:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:23:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:23:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:23:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:23:39,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:23:39,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287789460] [2024-10-24 12:23:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287789460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:23:39,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:23:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:23:39,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831599564] [2024-10-24 12:23:39,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:23:39,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:23:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:23:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:23:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:23:39,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-24 12:23:39,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 12:23:39,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:23:39,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-24 12:23:39,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:23:39,947 INFO L124 PetriNetUnfolderBase]: 92/283 cut-off events. [2024-10-24 12:23:39,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:23:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 283 events. 92/283 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1196 event pairs, 30 based on Foata normal form. 60/333 useless extension candidates. Maximal degree in co-relation 485. Up to 118 conditions per place. [2024-10-24 12:23:39,958 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 18 selfloop transitions, 2 changer transitions 23/52 dead transitions. [2024-10-24 12:23:39,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 187 flow [2024-10-24 12:23:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:23:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:23:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-10-24 12:23:39,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5511111111111111 [2024-10-24 12:23:39,979 INFO L175 Difference]: Start difference. First operand has 37 places, 42 transitions, 87 flow. Second operand 5 states and 124 transitions. [2024-10-24 12:23:39,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 187 flow [2024-10-24 12:23:39,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:23:39,987 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 66 flow [2024-10-24 12:23:39,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2024-10-24 12:23:39,996 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-10-24 12:23:39,996 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 66 flow [2024-10-24 12:23:39,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 12:23:39,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:23:39,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:23:39,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:23:39,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:23:39,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:23:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1775496008, now seen corresponding path program 1 times [2024-10-24 12:23:39,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:23:39,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237109144] [2024-10-24 12:23:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:23:39,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:23:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:23:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:23:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:23:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237109144] [2024-10-24 12:23:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237109144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:23:40,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:23:40,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:23:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848247226] [2024-10-24 12:23:40,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:23:40,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:23:40,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:23:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:23:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:23:40,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-24 12:23:40,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-10-24 12:23:40,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:23:40,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-24 12:23:40,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:23:40,444 INFO L124 PetriNetUnfolderBase]: 15/70 cut-off events. [2024-10-24 12:23:40,445 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:23:40,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 70 events. 15/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 3 based on Foata normal form. 9/79 useless extension candidates. Maximal degree in co-relation 124. Up to 36 conditions per place. [2024-10-24 12:23:40,446 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 14 selfloop transitions, 4 changer transitions 1/29 dead transitions. [2024-10-24 12:23:40,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 110 flow [2024-10-24 12:23:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:23:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:23:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-10-24 12:23:40,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-24 12:23:40,450 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 66 flow. Second operand 4 states and 81 transitions. [2024-10-24 12:23:40,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 110 flow [2024-10-24 12:23:40,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 102 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-24 12:23:40,451 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 66 flow [2024-10-24 12:23:40,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-10-24 12:23:40,454 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-10-24 12:23:40,455 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 66 flow [2024-10-24 12:23:40,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-10-24 12:23:40,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:23:40,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:23:40,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:23:40,457 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:23:40,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:23:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1930354891, now seen corresponding path program 1 times [2024-10-24 12:23:40,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:23:40,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381227310] [2024-10-24 12:23:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:23:40,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:23:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:23:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:23:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:23:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381227310] [2024-10-24 12:23:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381227310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:23:41,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:23:41,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:23:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617888171] [2024-10-24 12:23:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:23:41,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:23:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:23:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:23:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:23:41,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-10-24 12:23:41,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-10-24 12:23:41,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:23:41,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-10-24 12:23:41,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:23:41,154 INFO L124 PetriNetUnfolderBase]: 15/65 cut-off events. [2024-10-24 12:23:41,155 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 12:23:41,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 65 events. 15/65 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 2 based on Foata normal form. 2/67 useless extension candidates. Maximal degree in co-relation 121. Up to 18 conditions per place. [2024-10-24 12:23:41,156 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-10-24 12:23:41,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 130 flow [2024-10-24 12:23:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:23:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 12:23:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-10-24 12:23:41,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-10-24 12:23:41,160 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 66 flow. Second operand 8 states and 129 transitions. [2024-10-24 12:23:41,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 130 flow [2024-10-24 12:23:41,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:23:41,162 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-10-24 12:23:41,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-10-24 12:23:41,164 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-10-24 12:23:41,164 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-10-24 12:23:41,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-10-24 12:23:41,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-24 12:23:41,168 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-24 12:23:41,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:23:41,169 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-24 12:23:41,173 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:23:41,173 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:23:41,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:23:41 BasicIcfg [2024-10-24 12:23:41,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:23:41,180 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:23:41,180 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:23:41,180 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:23:41,181 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:23:38" (3/4) ... [2024-10-24 12:23:41,183 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:23:41,188 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-24 12:23:41,194 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-10-24 12:23:41,194 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-24 12:23:41,194 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:23:41,194 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-24 12:23:41,295 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:23:41,299 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:23:41,299 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:23:41,300 INFO L158 Benchmark]: Toolchain (without parser) took 3933.56ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 67.4MB in the beginning and 97.1MB in the end (delta: -29.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2024-10-24 12:23:41,300 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:23:41,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.90ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 67.2MB in the beginning and 142.6MB in the end (delta: -75.4MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2024-10-24 12:23:41,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.94ms. Allocated memory is still 184.5MB. Free memory was 142.6MB in the beginning and 140.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:23:41,301 INFO L158 Benchmark]: Boogie Preprocessor took 79.70ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 137.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:23:41,301 INFO L158 Benchmark]: RCFGBuilder took 733.41ms. Allocated memory is still 184.5MB. Free memory was 137.3MB in the beginning and 101.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-10-24 12:23:41,303 INFO L158 Benchmark]: TraceAbstraction took 2288.26ms. Allocated memory is still 184.5MB. Free memory was 100.6MB in the beginning and 102.3MB in the end (delta: -1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:23:41,305 INFO L158 Benchmark]: Witness Printer took 119.56ms. Allocated memory is still 184.5MB. Free memory was 102.3MB in the beginning and 97.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:23:41,306 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.90ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 67.2MB in the beginning and 142.6MB in the end (delta: -75.4MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.94ms. Allocated memory is still 184.5MB. Free memory was 142.6MB in the beginning and 140.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.70ms. Allocated memory is still 184.5MB. Free memory was 140.5MB in the beginning and 137.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 733.41ms. Allocated memory is still 184.5MB. Free memory was 137.3MB in the beginning and 101.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2288.26ms. Allocated memory is still 184.5MB. Free memory was 100.6MB in the beginning and 102.3MB in the end (delta: -1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 119.56ms. Allocated memory is still 184.5MB. Free memory was 102.3MB in the beginning and 97.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 56 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: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1 mSDtfsCounter, 178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 1.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 344 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2024-10-24 12:23:41,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE