./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 61a67961 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-wip.fs.cvc5-61a6796-m [2024-10-14 14:36:22,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:36:22,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:36:22,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:36:22,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:36:22,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:36:22,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:36:22,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:36:22,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:36:22,306 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:36:22,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:36:22,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:36:22,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:36:22,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:36:22,308 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:36:22,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:36:22,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:36:22,309 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:36:22,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:36:22,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:36:22,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:36:22,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:36:22,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:36:22,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:36:22,312 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:36:22,312 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:36:22,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:36:22,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:36:22,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:36:22,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:36:22,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:36:22,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:36:22,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:36:22,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:36:22,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:36:22,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:36:22,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:36:22,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:36:22,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:36:22,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:36:22,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:36:22,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:36:22,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 [2024-10-14 14:36:22,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:36:22,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:36:22,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:36:22,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:36:22,612 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:36:22,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2024-10-14 14:36:24,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:36:24,372 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:36:24,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-4.wvr.c [2024-10-14 14:36:24,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da643817/f12cee619dca4274a57ac897e3176c90/FLAG164cbb146 [2024-10-14 14:36:24,401 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da643817/f12cee619dca4274a57ac897e3176c90 [2024-10-14 14:36:24,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:36:24,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:36:24,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:36:24,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:36:24,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:36:24,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2287ef22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24, skipping insertion in model container [2024-10-14 14:36:24,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,447 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:36:24,640 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] [2024-10-14 14:36:24,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:36:24,656 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:36:24,697 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] [2024-10-14 14:36:24,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:36:24,720 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:36:24,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24 WrapperNode [2024-10-14 14:36:24,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:36:24,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:36:24,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:36:24,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:36:24,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,772 INFO L138 Inliner]: procedures = 22, calls = 156, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 388 [2024-10-14 14:36:24,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:36:24,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:36:24,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:36:24,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:36:24,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,801 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,823 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]. [2024-10-14 14:36:24,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:36:24,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:36:24,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:36:24,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:36:24,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (1/1) ... [2024-10-14 14:36:24,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:36:24,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:24,942 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) [2024-10-14 14:36:24,949 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 [2024-10-14 14:36:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:36:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:36:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:36:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:36:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:36:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:36:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:36:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 14:36:24,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 14:36:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:36:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:36:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:36:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:36:24,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:36:25,000 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:36:25,128 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:36:25,130 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:36:25,637 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:36:25,638 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:36:26,043 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:36:26,044 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:36:26,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:36:26 BoogieIcfgContainer [2024-10-14 14:36:26,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:36:26,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:36:26,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:36:26,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:36:26,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:36:24" (1/3) ... [2024-10-14 14:36:26,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76969592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:36:26, skipping insertion in model container [2024-10-14 14:36:26,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:24" (2/3) ... [2024-10-14 14:36:26,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76969592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:36:26, skipping insertion in model container [2024-10-14 14:36:26,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:36:26" (3/3) ... [2024-10-14 14:36:26,056 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2024-10-14 14:36:26,091 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:36:26,092 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:36:26,092 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:36:26,156 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 14:36:26,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 88 transitions, 204 flow [2024-10-14 14:36:26,271 INFO L124 PetriNetUnfolderBase]: 0/84 cut-off events. [2024-10-14 14:36:26,272 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:36:26,274 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. [2024-10-14 14:36:26,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 88 transitions, 204 flow [2024-10-14 14:36:26,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 83 transitions, 190 flow [2024-10-14 14:36:26,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:36:26,302 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;@74804946, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:36:26,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 14:36:26,342 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:36:26,342 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2024-10-14 14:36:26,343 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:36:26,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:26,344 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] [2024-10-14 14:36:26,345 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)] === [2024-10-14 14:36:26,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -749516041, now seen corresponding path program 1 times [2024-10-14 14:36:26,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:26,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108455452] [2024-10-14 14:36:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:26,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:27,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108455452] [2024-10-14 14:36:27,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108455452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:27,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:27,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 14:36:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53710546] [2024-10-14 14:36:27,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:27,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 14:36:27,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:27,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 14:36:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-14 14:36:27,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 88 [2024-10-14 14:36:27,563 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) [2024-10-14 14:36:27,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:27,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 88 [2024-10-14 14:36:27,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:42,489 INFO L124 PetriNetUnfolderBase]: 125754/181391 cut-off events. [2024-10-14 14:36:42,489 INFO L125 PetriNetUnfolderBase]: For 6246/6246 co-relation queries the response was YES. [2024-10-14 14:36:42,860 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. [2024-10-14 14:36:43,856 INFO L140 encePairwiseOnDemand]: 78/88 looper letters, 293 selfloop transitions, 25 changer transitions 23/370 dead transitions. [2024-10-14 14:36:43,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 370 transitions, 1548 flow [2024-10-14 14:36:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 14:36:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 14:36:43,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 804 transitions. [2024-10-14 14:36:43,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6525974025974026 [2024-10-14 14:36:43,876 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 190 flow. Second operand 14 states and 804 transitions. [2024-10-14 14:36:43,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 370 transitions, 1548 flow [2024-10-14 14:36:44,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 370 transitions, 1464 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 14:36:44,030 INFO L231 Difference]: Finished difference. Result has 106 places, 112 transitions, 329 flow [2024-10-14 14:36:44,032 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} [2024-10-14 14:36:44,037 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 10 predicate places. [2024-10-14 14:36:44,037 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 112 transitions, 329 flow [2024-10-14 14:36:44,038 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) [2024-10-14 14:36:44,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:44,038 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] [2024-10-14 14:36:44,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:36:44,039 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)] === [2024-10-14 14:36:44,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash 974467611, now seen corresponding path program 2 times [2024-10-14 14:36:44,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:44,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477139980] [2024-10-14 14:36:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:44,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:46,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477139980] [2024-10-14 14:36:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477139980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:46,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-10-14 14:36:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41631264] [2024-10-14 14:36:46,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:46,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 14:36:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 14:36:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-10-14 14:36:46,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 88 [2024-10-14 14:36:46,816 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) [2024-10-14 14:36:46,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:46,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 88 [2024-10-14 14:36:46,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand