./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/weaver/parallel-bakery-4.wvr.c -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 a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:08:47,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:08:47,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:08:47,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:08:47,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:08:47,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:08:47,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:08:47,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:08:47,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:08:47,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:08:47,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:08:47,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:08:47,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:08:47,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:08:47,895 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:08:47,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:08:47,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:08:47,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:08:47,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:08:47,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:08:47,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:08:47,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:08:47,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:08:47,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:08:47,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:08:47,904 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:08:47,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:08:47,904 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:08:47,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:08:47,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:08:47,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:08:47,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:08:47,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:47,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:08:47,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:08:47,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:08:47,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:08:47,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:08:47,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:08:47,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:08:47,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:08:47,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:08:47,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 [2024-10-13 07:08:48,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:08:48,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:08:48,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:08:48,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:08:48,190 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:08:48,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2024-10-13 07:08:49,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:08:49,895 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:08:49,896 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2024-10-13 07:08:49,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/522166da5/8a72ec6d77464701a7861d33fd8e85ce/FLAGf8e2fdc40 [2024-10-13 07:08:49,926 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/522166da5/8a72ec6d77464701a7861d33fd8e85ce [2024-10-13 07:08:49,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:08:49,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:08:49,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:49,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:08:49,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:08:49,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:49" (1/1) ... [2024-10-13 07:08:49,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae026c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:49, skipping insertion in model container [2024-10-13 07:08:49,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:49" (1/1) ... [2024-10-13 07:08:49,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:08:50,212 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/weaver/parallel-bakery-4.wvr.c[8030,8043] [2024-10-13 07:08:50,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:50,227 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:08:50,259 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/weaver/parallel-bakery-4.wvr.c[8030,8043] [2024-10-13 07:08:50,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:50,289 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:08:50,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50 WrapperNode [2024-10-13 07:08:50,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:50,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:50,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:08:50,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:08:50,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,374 INFO L138 Inliner]: procedures = 22, calls = 156, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 388 [2024-10-13 07:08:50,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:50,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:08:50,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:08:50,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:08:50,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,415 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 07:08:50,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:08:50,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:08:50,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:08:50,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:08:50,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (1/1) ... [2024-10-13 07:08:50,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:50,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:50,496 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) [2024-10-13 07:08:50,500 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 [2024-10-13 07:08:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:08:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:08:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:08:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:08:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:08:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:08:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:08:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 07:08:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 07:08:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:08:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:08:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:08:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:08:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:08:50,560 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:08:50,705 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:08:50,707 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:08:51,210 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:08:51,211 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:08:51,584 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:08:51,584 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 07:08:51,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:51 BoogieIcfgContainer [2024-10-13 07:08:51,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:08:51,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:08:51,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:08:51,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:08:51,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:49" (1/3) ... [2024-10-13 07:08:51,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e123d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:51, skipping insertion in model container [2024-10-13 07:08:51,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:50" (2/3) ... [2024-10-13 07:08:51,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e123d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:51, skipping insertion in model container [2024-10-13 07:08:51,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:51" (3/3) ... [2024-10-13 07:08:51,597 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2024-10-13 07:08:51,617 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:08:51,617 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:08:51,618 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:08:51,681 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 07:08:51,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 88 transitions, 204 flow [2024-10-13 07:08:51,780 INFO L124 PetriNetUnfolderBase]: 0/84 cut-off events. [2024-10-13 07:08:51,781 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:08:51,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 84 events. 0/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 210 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-13 07:08:51,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 88 transitions, 204 flow [2024-10-13 07:08:51,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 83 transitions, 190 flow [2024-10-13 07:08:51,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:08:51,805 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;@6211d32e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:08:51,805 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 07:08:51,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:08:51,838 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2024-10-13 07:08:51,838 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:08:51,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:51,840 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:51,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:08:51,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash -749516041, now seen corresponding path program 1 times [2024-10-13 07:08:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:51,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428628150] [2024-10-13 07:08:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428628150] [2024-10-13 07:08:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428628150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:52,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:52,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:08:52,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821254421] [2024-10-13 07:08:52,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:52,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:08:53,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 88 [2024-10-13 07:08:53,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 190 flow. Second operand has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 11 states have internal predecessors, (417), 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) [2024-10-13 07:08:53,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:53,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 88 [2024-10-13 07:08:53,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:07,136 INFO L124 PetriNetUnfolderBase]: 125754/181391 cut-off events. [2024-10-13 07:09:07,136 INFO L125 PetriNetUnfolderBase]: For 6246/6246 co-relation queries the response was YES. [2024-10-13 07:09:07,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355339 conditions, 181391 events. 125754/181391 cut-off events. For 6246/6246 co-relation queries the response was YES. Maximal size of possible extension queue 4912. Compared 1450082 event pairs, 44888 based on Foata normal form. 1/180836 useless extension candidates. Maximal degree in co-relation 336036. Up to 64438 conditions per place. [2024-10-13 07:09:08,454 INFO L140 encePairwiseOnDemand]: 78/88 looper letters, 293 selfloop transitions, 25 changer transitions 23/370 dead transitions. [2024-10-13 07:09:08,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 370 transitions, 1548 flow [2024-10-13 07:09:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:09:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:09:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 804 transitions. [2024-10-13 07:09:08,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6525974025974026 [2024-10-13 07:09:08,475 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 190 flow. Second operand 14 states and 804 transitions. [2024-10-13 07:09:08,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 370 transitions, 1548 flow [2024-10-13 07:09:08,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 370 transitions, 1464 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 07:09:08,656 INFO L231 Difference]: Finished difference. Result has 106 places, 112 transitions, 329 flow [2024-10-13 07:09:08,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=329, PETRI_PLACES=106, PETRI_TRANSITIONS=112} [2024-10-13 07:09:08,661 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 10 predicate places. [2024-10-13 07:09:08,662 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 112 transitions, 329 flow [2024-10-13 07:09:08,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 11 states have internal predecessors, (417), 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) [2024-10-13 07:09:08,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:08,662 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:08,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:09:08,663 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:09:08,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 974467611, now seen corresponding path program 2 times [2024-10-13 07:09:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125942122] [2024-10-13 07:09:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125942122] [2024-10-13 07:09:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125942122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:11,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-13 07:09:11,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200364691] [2024-10-13 07:09:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:11,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 07:09:11,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:11,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 07:09:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:09:11,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 88 [2024-10-13 07:09:11,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 329 flow. Second operand has 18 states, 18 states have (on average 30.333333333333332) internal successors, (546), 18 states have internal predecessors, (546), 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) [2024-10-13 07:09:11,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:11,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 88 [2024-10-13 07:09:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand