./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:15:51,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:15:51,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:15:51,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:15:51,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:15:51,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:15:51,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:15:51,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:15:51,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:15:51,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:15:51,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:15:51,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:15:51,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:15:51,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:15:51,363 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:15:51,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:15:51,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:15:51,364 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:15:51,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:15:51,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:15:51,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:15:51,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:15:51,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:15:51,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:15:51,367 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:15:51,367 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:15:51,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:15:51,368 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:15:51,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:15:51,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:15:51,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:15:51,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:15:51,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:15:51,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:15:51,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:15:51,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:15:51,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:15:51,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:15:51,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:15:51,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:15:51,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:15:51,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:15:51,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2024-11-12 08:15:51,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:15:51,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:15:51,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:15:51,675 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:15:51,675 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:15:51,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-12 08:15:53,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:15:53,371 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:15:53,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-12 08:15:53,388 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f474a538/1f9a040d74484d88af49ebc46c1de08e/FLAGfa1fb40f4 [2024-11-12 08:15:53,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f474a538/1f9a040d74484d88af49ebc46c1de08e [2024-11-12 08:15:53,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:15:53,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:15:53,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:15:53,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:15:53,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:15:53,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:53,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a62be54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53, skipping insertion in model container [2024-11-12 08:15:53,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:53,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:15:53,820 WARN L250 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_37-indirect_racing.i[30176,30189] [2024-11-12 08:15:53,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:15:53,868 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:15:53,917 WARN L250 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_37-indirect_racing.i[30176,30189] [2024-11-12 08:15:53,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:15:53,979 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:15:53,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53 WrapperNode [2024-11-12 08:15:53,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:15:53,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:15:53,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:15:53,982 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:15:53,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,036 INFO L138 Inliner]: procedures = 171, calls = 40, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-11-12 08:15:54,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:15:54,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:15:54,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:15:54,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:15:54,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,075 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 6, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-11-12 08:15:54,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:15:54,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:15:54,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:15:54,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:15:54,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (1/1) ... [2024-11-12 08:15:54,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:15:54,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:15:54,154 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) [2024-11-12 08:15:54,158 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 [2024-11-12 08:15:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:15:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:15:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 08:15:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 08:15:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 08:15:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:15:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:15:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 08:15:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 08:15:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 08:15:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 08:15:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:15:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 08:15:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-12 08:15:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-12 08:15:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 08:15:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:15:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:15:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 08:15:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 08:15:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 08:15:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 08:15:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:15:54,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:15:54,216 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:15:54,362 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:15:54,364 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:15:54,568 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:15:54,569 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:15:54,777 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:15:54,778 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-12 08:15:54,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:15:54 BoogieIcfgContainer [2024-11-12 08:15:54,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:15:54,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:15:54,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:15:54,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:15:54,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:15:53" (1/3) ... [2024-11-12 08:15:54,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd365e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:15:54, skipping insertion in model container [2024-11-12 08:15:54,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:15:53" (2/3) ... [2024-11-12 08:15:54,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd365e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:15:54, skipping insertion in model container [2024-11-12 08:15:54,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:15:54" (3/3) ... [2024-11-12 08:15:54,789 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-11-12 08:15:54,804 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:15:54,805 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:15:54,805 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:15:54,844 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-12 08:15:54,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 46 transitions, 99 flow [2024-11-12 08:15:55,009 INFO L124 PetriNetUnfolderBase]: 13/63 cut-off events. [2024-11-12 08:15:55,010 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:15:55,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 13/63 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2024-11-12 08:15:55,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 46 transitions, 99 flow [2024-11-12 08:15:55,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 44 transitions, 92 flow [2024-11-12 08:15:55,029 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:15:55,036 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;@706f7a42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:15:55,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-12 08:15:55,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:15:55,047 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-12 08:15:55,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:15:55,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:15:55,048 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 08:15:55,050 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:15:55,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:15:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1242857347, now seen corresponding path program 1 times [2024-11-12 08:15:55,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:15:55,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139658713] [2024-11-12 08:15:55,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:15:55,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:15:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:15:55,246 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 08:15:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:15:55,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 08:15:55,347 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 08:15:55,348 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-12 08:15:55,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-12 08:15:55,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:15:55,350 INFO L421 BasicCegarLoop]: Path program histogram: [1] [2024-11-12 08:15:55,354 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 08:15:55,354 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 08:15:55,383 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:15:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 71 transitions, 158 flow [2024-11-12 08:15:55,427 INFO L124 PetriNetUnfolderBase]: 24/112 cut-off events. [2024-11-12 08:15:55,427 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-12 08:15:55,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 112 events. 24/112 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 434 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2024-11-12 08:15:55,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 71 transitions, 158 flow [2024-11-12 08:15:55,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 71 transitions, 158 flow [2024-11-12 08:15:55,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:15:55,437 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;@706f7a42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:15:55,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-12 08:15:55,443 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:15:55,443 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-12 08:15:55,443 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:15:55,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:15:55,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 08:15:55,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:15:55,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:15:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash -952723668, now seen corresponding path program 1 times [2024-11-12 08:15:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:15:55,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279228626] [2024-11-12 08:15:55,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:15:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:15:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:15:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:15:55,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:15:55,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279228626] [2024-11-12 08:15:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279228626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:15:55,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:15:55,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:15:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928102179] [2024-11-12 08:15:55,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:15:55,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:15:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:15:55,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:15:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:15:55,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 71 [2024-11-12 08:15:55,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 71 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-11-12 08:15:55,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:15:55,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 71 [2024-11-12 08:15:55,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:15:56,312 INFO L124 PetriNetUnfolderBase]: 1858/3805 cut-off events. [2024-11-12 08:15:56,312 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-12 08:15:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 3805 events. 1858/3805 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 27388 event pairs, 1723 based on Foata normal form. 1056/4534 useless extension candidates. Maximal degree in co-relation 5002. Up to 3009 conditions per place. [2024-11-12 08:15:56,335 INFO L140 encePairwiseOnDemand]: 53/71 looper letters, 35 selfloop transitions, 2 changer transitions 10/67 dead transitions. [2024-11-12 08:15:56,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 238 flow [2024-11-12 08:15:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:15:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:15:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-12 08:15:56,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338028169014085 [2024-11-12 08:15:56,349 INFO L175 Difference]: Start difference. First operand has 59 places, 71 transitions, 158 flow. Second operand 3 states and 135 transitions. [2024-11-12 08:15:56,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 238 flow [2024-11-12 08:15:56,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:15:56,357 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 114 flow [2024-11-12 08:15:56,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-11-12 08:15:56,363 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2024-11-12 08:15:56,363 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 114 flow [2024-11-12 08:15:56,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-11-12 08:15:56,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:15:56,364 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-12 08:15:56,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:15:56,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:15:56,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:15:56,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1617157474, now seen corresponding path program 1 times [2024-11-12 08:15:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:15:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437606054] [2024-11-12 08:15:56,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:15:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:15:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:15:56,412 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 08:15:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:15:56,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 08:15:56,449 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 08:15:56,452 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-12 08:15:56,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-12 08:15:56,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:15:56,453 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 08:15:56,453 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 08:15:56,454 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 08:15:56,483 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:15:56,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 96 transitions, 219 flow [2024-11-12 08:15:56,509 INFO L124 PetriNetUnfolderBase]: 38/172 cut-off events. [2024-11-12 08:15:56,509 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2024-11-12 08:15:56,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 172 events. 38/172 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 723 event pairs, 1 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 123. Up to 12 conditions per place. [2024-11-12 08:15:56,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 96 transitions, 219 flow [2024-11-12 08:15:56,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 96 transitions, 219 flow [2024-11-12 08:15:56,514 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:15:56,515 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;@706f7a42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:15:56,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-12 08:15:56,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:15:56,519 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-12 08:15:56,519 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:15:56,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:15:56,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 08:15:56,520 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:15:56,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:15:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1887288108, now seen corresponding path program 1 times [2024-11-12 08:15:56,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:15:56,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139233774] [2024-11-12 08:15:56,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:15:56,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:15:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:15:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:15:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:15:56,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139233774] [2024-11-12 08:15:56,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139233774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:15:56,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:15:56,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:15:56,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663518342] [2024-11-12 08:15:56,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:15:56,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:15:56,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:15:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:15:56,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:15:56,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-12 08:15:56,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 96 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-12 08:15:56,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:15:56,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-12 08:15:56,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:16:01,918 INFO L124 PetriNetUnfolderBase]: 29927/49891 cut-off events. [2024-11-12 08:16:01,919 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-11-12 08:16:02,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92784 conditions, 49891 events. 29927/49891 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 435637 event pairs, 19222 based on Foata normal form. 15616/61952 useless extension candidates. Maximal degree in co-relation 7041. Up to 42082 conditions per place. [2024-11-12 08:16:02,166 INFO L140 encePairwiseOnDemand]: 72/96 looper letters, 45 selfloop transitions, 2 changer transitions 11/86 dead transitions. [2024-11-12 08:16:02,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 309 flow [2024-11-12 08:16:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:16:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:16:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-12 08:16:02,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-12 08:16:02,170 INFO L175 Difference]: Start difference. First operand has 79 places, 96 transitions, 219 flow. Second operand 3 states and 176 transitions. [2024-11-12 08:16:02,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 309 flow [2024-11-12 08:16:02,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:16:02,175 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 158 flow [2024-11-12 08:16:02,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-11-12 08:16:02,177 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2024-11-12 08:16:02,177 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 158 flow [2024-11-12 08:16:02,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-12 08:16:02,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:16:02,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:16:02,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:16:02,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:16:02,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:16:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1843954143, now seen corresponding path program 1 times [2024-11-12 08:16:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:16:02,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018215940] [2024-11-12 08:16:02,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:16:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:16:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:16:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:16:02,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:16:02,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018215940] [2024-11-12 08:16:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018215940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:16:02,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:16:02,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:16:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778978648] [2024-11-12 08:16:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:16:02,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:16:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:16:02,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:16:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:16:02,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-12 08:16:02,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-12 08:16:02,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:16:02,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-12 08:16:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:16:04,531 INFO L124 PetriNetUnfolderBase]: 16308/27598 cut-off events. [2024-11-12 08:16:04,531 INFO L125 PetriNetUnfolderBase]: For 2849/2849 co-relation queries the response was YES. [2024-11-12 08:16:04,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53198 conditions, 27598 events. 16308/27598 cut-off events. For 2849/2849 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 223983 event pairs, 9620 based on Foata normal form. 10/27054 useless extension candidates. Maximal degree in co-relation 5447. Up to 22701 conditions per place. [2024-11-12 08:16:04,678 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 64 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2024-11-12 08:16:04,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 354 flow [2024-11-12 08:16:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:16:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:16:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-12 08:16:04,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 08:16:04,689 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 158 flow. Second operand 4 states and 192 transitions. [2024-11-12 08:16:04,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 354 flow [2024-11-12 08:16:04,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 350 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 08:16:04,698 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 170 flow [2024-11-12 08:16:04,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-12 08:16:04,699 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-11-12 08:16:04,699 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 170 flow [2024-11-12 08:16:04,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-11-12 08:16:04,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:16:04,701 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:16:04,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:16:04,701 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:16:04,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:16:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash 259495309, now seen corresponding path program 1 times [2024-11-12 08:16:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:16:04,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125973988] [2024-11-12 08:16:04,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:16:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:16:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:16:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:16:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:16:04,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125973988] [2024-11-12 08:16:04,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125973988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:16:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:16:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:16:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892425537] [2024-11-12 08:16:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:16:04,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:16:04,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:16:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:16:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:16:04,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-12 08:16:04,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2024-11-12 08:16:04,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:16:04,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-12 08:16:04,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:16:06,755 INFO L124 PetriNetUnfolderBase]: 15768/27108 cut-off events. [2024-11-12 08:16:06,756 INFO L125 PetriNetUnfolderBase]: For 6767/6767 co-relation queries the response was YES. [2024-11-12 08:16:06,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53870 conditions, 27108 events. 15768/27108 cut-off events. For 6767/6767 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 224334 event pairs, 4480 based on Foata normal form. 100/26574 useless extension candidates. Maximal degree in co-relation 5487. Up to 18501 conditions per place. [2024-11-12 08:16:06,929 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 91 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-12 08:16:06,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 123 transitions, 474 flow [2024-11-12 08:16:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:16:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:16:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2024-11-12 08:16:06,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2024-11-12 08:16:06,932 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 170 flow. Second operand 5 states and 251 transitions. [2024-11-12 08:16:06,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 123 transitions, 474 flow [2024-11-12 08:16:06,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 123 transitions, 468 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-12 08:16:06,936 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 176 flow [2024-11-12 08:16:06,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-11-12 08:16:06,937 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-11-12 08:16:06,937 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 176 flow [2024-11-12 08:16:06,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2024-11-12 08:16:06,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:16:06,939 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-12 08:16:06,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:16:06,940 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:16:06,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:16:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash 261964418, now seen corresponding path program 1 times [2024-11-12 08:16:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:16:06,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746623162] [2024-11-12 08:16:06,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:16:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:16:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:16:06,966 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 08:16:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 08:16:06,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 08:16:06,985 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 08:16:06,986 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-12 08:16:06,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-12 08:16:06,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 08:16:06,987 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-12 08:16:06,988 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 08:16:06,988 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-12 08:16:07,022 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 08:16:07,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 121 transitions, 282 flow [2024-11-12 08:16:07,055 INFO L124 PetriNetUnfolderBase]: 60/256 cut-off events. [2024-11-12 08:16:07,056 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2024-11-12 08:16:07,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 256 events. 60/256 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1126 event pairs, 6 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 196. Up to 32 conditions per place. [2024-11-12 08:16:07,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 121 transitions, 282 flow [2024-11-12 08:16:07,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 121 transitions, 282 flow [2024-11-12 08:16:07,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:16:07,064 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;@706f7a42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:16:07,067 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-12 08:16:07,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:16:07,071 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-12 08:16:07,071 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:16:07,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:16:07,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 08:16:07,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:16:07,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:16:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1171918988, now seen corresponding path program 1 times [2024-11-12 08:16:07,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:16:07,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704826448] [2024-11-12 08:16:07,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:16:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:16:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:16:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:16:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:16:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704826448] [2024-11-12 08:16:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704826448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:16:07,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:16:07,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:16:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607109998] [2024-11-12 08:16:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:16:07,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:16:07,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:16:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:16:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:16:07,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 121 [2024-11-12 08:16:07,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-12 08:16:07,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:16:07,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 121 [2024-11-12 08:16:07,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand