./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe017_tso.i --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/pthread-wmm/safe017_tso.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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:26:35,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:26:35,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:26:35,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:26:35,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:26:35,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:26:35,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:26:35,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:26:35,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:26:35,868 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:26:35,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:26:35,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:26:35,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:26:35,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:26:35,870 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:26:35,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:26:35,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:26:35,871 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:26:35,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:26:35,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:26:35,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:26:35,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:26:35,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:26:35,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:26:35,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:26:35,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:26:35,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:26:35,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:26:35,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:26:35,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:26:35,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:26:35,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:26:35,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:26:35,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:26:35,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:26:35,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:26:35,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:26:35,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:26:35,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:26:35,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:26:35,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:26:35,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:26:35,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2024-10-14 14:26:36,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:26:36,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:26:36,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:26:36,247 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:26:36,247 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:26:36,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2024-10-14 14:26:37,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:26:37,810 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:26:37,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2024-10-14 14:26:37,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574f62403/02473b2f6c69422d8a7dce78c04f3709/FLAG3932945ff [2024-10-14 14:26:38,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574f62403/02473b2f6c69422d8a7dce78c04f3709 [2024-10-14 14:26:38,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:26:38,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:26:38,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:26:38,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:26:38,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:26:38,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653a0571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38, skipping insertion in model container [2024-10-14 14:26:38,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:26:38,361 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/pthread-wmm/safe017_tso.i[945,958] [2024-10-14 14:26:38,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:26:38,480 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:26:38,491 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/pthread-wmm/safe017_tso.i[945,958] [2024-10-14 14:26:38,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:26:38,559 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:26:38,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38 WrapperNode [2024-10-14 14:26:38,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:26:38,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:26:38,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:26:38,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:26:38,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,593 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-10-14 14:26:38,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:26:38,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:26:38,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:26:38,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:26:38,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,617 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 14:26:38,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:26:38,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:26:38,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:26:38,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:26:38,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (1/1) ... [2024-10-14 14:26:38,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:26:38,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:26:38,671 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 14:26:38,674 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 14:26:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:26:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:26:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-14 14:26:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-14 14:26:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-14 14:26:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-14 14:26:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-14 14:26:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-14 14:26:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:26:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:26:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:26:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:26:38,721 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 14:26:38,833 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:26:38,835 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:26:38,935 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:26:38,935 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:26:39,020 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:26:39,021 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:26:39,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:26:39 BoogieIcfgContainer [2024-10-14 14:26:39,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:26:39,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:26:39,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:26:39,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:26:39,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:26:38" (1/3) ... [2024-10-14 14:26:39,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a2d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:26:39, skipping insertion in model container [2024-10-14 14:26:39,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:26:38" (2/3) ... [2024-10-14 14:26:39,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a2d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:26:39, skipping insertion in model container [2024-10-14 14:26:39,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:26:39" (3/3) ... [2024-10-14 14:26:39,028 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2024-10-14 14:26:39,042 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:26:39,042 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:26:39,043 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:26:39,100 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 14:26:39,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-10-14 14:26:39,160 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-10-14 14:26:39,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:26:39,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-14 14:26:39,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-10-14 14:26:39,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-10-14 14:26:39,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:26:39,188 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;@45fc572c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:26:39,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:26:39,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:26:39,200 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-10-14 14:26:39,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:26:39,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:39,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:39,201 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 1 more)] === [2024-10-14 14:26:39,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash 586073047, now seen corresponding path program 1 times [2024-10-14 14:26:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:39,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070958169] [2024-10-14 14:26:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:39,634 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 14:26:39,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:39,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070958169] [2024-10-14 14:26:39,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070958169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:39,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:39,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:26:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770809127] [2024-10-14 14:26:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:39,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:26:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:39,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:26:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:26:39,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-14 14:26:39,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 14:26:39,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:39,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-14 14:26:39,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:39,857 INFO L124 PetriNetUnfolderBase]: 291/590 cut-off events. [2024-10-14 14:26:39,857 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 14:26:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 590 events. 291/590 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3205 event pairs, 58 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1085. Up to 236 conditions per place. [2024-10-14 14:26:39,868 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-10-14 14:26:39,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-10-14 14:26:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:26:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:26:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-14 14:26:39,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7364864864864865 [2024-10-14 14:26:39,880 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 109 transitions. [2024-10-14 14:26:39,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-10-14 14:26:39,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 14:26:39,885 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2024-10-14 14:26:39,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-10-14 14:26:39,891 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-10-14 14:26:39,891 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2024-10-14 14:26:39,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 14:26:39,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:39,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:26:39,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:26:39,892 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 1 more)] === [2024-10-14 14:26:39,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1966305515, now seen corresponding path program 1 times [2024-10-14 14:26:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781690609] [2024-10-14 14:26:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:39,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:40,041 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 14:26:40,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781690609] [2024-10-14 14:26:40,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781690609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:40,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:40,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:26:40,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444796630] [2024-10-14 14:26:40,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:40,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:26:40,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:26:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:26:40,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-14 14:26:40,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 14:26:40,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:40,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-14 14:26:40,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:40,155 INFO L124 PetriNetUnfolderBase]: 249/505 cut-off events. [2024-10-14 14:26:40,155 INFO L125 PetriNetUnfolderBase]: For 173/176 co-relation queries the response was YES. [2024-10-14 14:26:40,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 505 events. 249/505 cut-off events. For 173/176 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2477 event pairs, 15 based on Foata normal form. 28/526 useless extension candidates. Maximal degree in co-relation 1171. Up to 188 conditions per place. [2024-10-14 14:26:40,163 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 31 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2024-10-14 14:26:40,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 245 flow [2024-10-14 14:26:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:26:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:26:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-10-14 14:26:40,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7405405405405405 [2024-10-14 14:26:40,165 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 137 transitions. [2024-10-14 14:26:40,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 245 flow [2024-10-14 14:26:40,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 235 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 14:26:40,169 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2024-10-14 14:26:40,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-10-14 14:26:40,170 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-10-14 14:26:40,170 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2024-10-14 14:26:40,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 14:26:40,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:40,171 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] [2024-10-14 14:26:40,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:26:40,171 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:26:40,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:40,171 INFO L85 PathProgramCache]: Analyzing trace with hash -3298757, now seen corresponding path program 1 times [2024-10-14 14:26:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:40,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961361995] [2024-10-14 14:26:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:40,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:40,301 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 14:26:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961361995] [2024-10-14 14:26:40,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961361995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:40,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:40,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:26:40,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289055511] [2024-10-14 14:26:40,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:40,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:26:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:26:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:26:40,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-10-14 14:26:40,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 14:26:40,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:40,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-10-14 14:26:40,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:40,407 INFO L124 PetriNetUnfolderBase]: 174/340 cut-off events. [2024-10-14 14:26:40,407 INFO L125 PetriNetUnfolderBase]: For 358/364 co-relation queries the response was YES. [2024-10-14 14:26:40,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 340 events. 174/340 cut-off events. For 358/364 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1274 event pairs, 6 based on Foata normal form. 24/357 useless extension candidates. Maximal degree in co-relation 925. Up to 108 conditions per place. [2024-10-14 14:26:40,409 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 29 selfloop transitions, 11 changer transitions 1/56 dead transitions. [2024-10-14 14:26:40,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 272 flow [2024-10-14 14:26:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:26:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:26:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-10-14 14:26:40,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7072072072072072 [2024-10-14 14:26:40,411 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 157 transitions. [2024-10-14 14:26:40,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 272 flow [2024-10-14 14:26:40,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 247 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-14 14:26:40,413 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2024-10-14 14:26:40,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-10-14 14:26:40,416 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-10-14 14:26:40,416 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2024-10-14 14:26:40,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 14:26:40,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:40,416 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] [2024-10-14 14:26:40,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:26:40,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:26:40,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash -369632018, now seen corresponding path program 1 times [2024-10-14 14:26:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:40,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292226584] [2024-10-14 14:26:40,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:40,513 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 14:26:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292226584] [2024-10-14 14:26:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292226584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:40,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:40,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:26:40,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588305430] [2024-10-14 14:26:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:40,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:26:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:26:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:26:40,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-14 14:26:40,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 14:26:40,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:40,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-14 14:26:40,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:40,657 INFO L124 PetriNetUnfolderBase]: 465/918 cut-off events. [2024-10-14 14:26:40,657 INFO L125 PetriNetUnfolderBase]: For 425/434 co-relation queries the response was YES. [2024-10-14 14:26:40,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 918 events. 465/918 cut-off events. For 425/434 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4968 event pairs, 171 based on Foata normal form. 8/846 useless extension candidates. Maximal degree in co-relation 2104. Up to 388 conditions per place. [2024-10-14 14:26:40,660 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 24 selfloop transitions, 6 changer transitions 11/59 dead transitions. [2024-10-14 14:26:40,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 294 flow [2024-10-14 14:26:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:26:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:26:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-14 14:26:40,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6594594594594595 [2024-10-14 14:26:40,663 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 5 states and 122 transitions. [2024-10-14 14:26:40,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 294 flow [2024-10-14 14:26:40,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 230 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-14 14:26:40,666 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 146 flow [2024-10-14 14:26:40,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-10-14 14:26:40,668 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-10-14 14:26:40,668 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 146 flow [2024-10-14 14:26:40,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 14:26:40,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:40,669 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] [2024-10-14 14:26:40,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:26:40,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:26:40,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash 959879212, now seen corresponding path program 2 times [2024-10-14 14:26:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:40,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95074737] [2024-10-14 14:26:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:40,916 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 14:26:40,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:40,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95074737] [2024-10-14 14:26:40,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95074737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:40,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:40,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:26:40,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307219574] [2024-10-14 14:26:40,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:40,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:26:40,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:26:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:26:40,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-14 14:26:40,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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 14:26:40,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:40,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-14 14:26:40,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:41,229 INFO L124 PetriNetUnfolderBase]: 651/1340 cut-off events. [2024-10-14 14:26:41,229 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-10-14 14:26:41,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 1340 events. 651/1340 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8456 event pairs, 152 based on Foata normal form. 8/1245 useless extension candidates. Maximal degree in co-relation 2991. Up to 354 conditions per place. [2024-10-14 14:26:41,237 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 25 selfloop transitions, 7 changer transitions 31/81 dead transitions. [2024-10-14 14:26:41,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 380 flow [2024-10-14 14:26:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:26:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:26:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-10-14 14:26:41,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-10-14 14:26:41,239 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 146 flow. Second operand 8 states and 192 transitions. [2024-10-14 14:26:41,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 380 flow [2024-10-14 14:26:41,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 354 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-14 14:26:41,244 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 150 flow [2024-10-14 14:26:41,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=150, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-10-14 14:26:41,245 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-10-14 14:26:41,245 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 150 flow [2024-10-14 14:26:41,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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 14:26:41,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:26:41,245 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] [2024-10-14 14:26:41,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:26:41,246 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:26:41,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:26:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1245391342, now seen corresponding path program 3 times [2024-10-14 14:26:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:26:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996451066] [2024-10-14 14:26:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:26:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:26:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:26:41,423 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 14:26:41,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:26:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996451066] [2024-10-14 14:26:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996451066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:26:41,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:26:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:26:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307354928] [2024-10-14 14:26:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:26:41,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:26:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:26:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:26:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:26:41,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-10-14 14:26:41,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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 14:26:41,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:26:41,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-10-14 14:26:41,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:26:41,544 INFO L124 PetriNetUnfolderBase]: 309/691 cut-off events. [2024-10-14 14:26:41,544 INFO L125 PetriNetUnfolderBase]: For 153/156 co-relation queries the response was YES. [2024-10-14 14:26:41,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 691 events. 309/691 cut-off events. For 153/156 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3834 event pairs, 99 based on Foata normal form. 10/651 useless extension candidates. Maximal degree in co-relation 1522. Up to 285 conditions per place. [2024-10-14 14:26:41,546 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2024-10-14 14:26:41,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 294 flow [2024-10-14 14:26:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:26:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:26:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-10-14 14:26:41,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-10-14 14:26:41,548 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 150 flow. Second operand 7 states and 154 transitions. [2024-10-14 14:26:41,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 294 flow [2024-10-14 14:26:41,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 280 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-14 14:26:41,550 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-10-14 14:26:41,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-10-14 14:26:41,552 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-10-14 14:26:41,552 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-10-14 14:26:41,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 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 14:26:41,554 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-14 14:26:41,554 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-14 14:26:41,555 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-14 14:26:41,555 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-14 14:26:41,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:26:41,555 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-14 14:26:41,560 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 14:26:41,560 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 14:26:41,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:26:41 BasicIcfg [2024-10-14 14:26:41,564 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 14:26:41,565 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 14:26:41,565 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 14:26:41,565 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 14:26:41,565 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:26:39" (3/4) ... [2024-10-14 14:26:41,567 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 14:26:41,569 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-14 14:26:41,569 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-14 14:26:41,569 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-14 14:26:41,572 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2024-10-14 14:26:41,572 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-10-14 14:26:41,573 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-14 14:26:41,573 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 14:26:41,631 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 14:26:41,632 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 14:26:41,632 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 14:26:41,632 INFO L158 Benchmark]: Toolchain (without parser) took 3453.81ms. Allocated memory was 186.6MB in the beginning and 291.5MB in the end (delta: 104.9MB). Free memory was 132.1MB in the beginning and 123.8MB in the end (delta: 8.2MB). Peak memory consumption was 113.3MB. Max. memory is 16.1GB. [2024-10-14 14:26:41,633 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 14:26:41,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.06ms. Allocated memory is still 186.6MB. Free memory was 131.3MB in the beginning and 109.8MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 14:26:41,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.38ms. Allocated memory is still 186.6MB. Free memory was 109.8MB in the beginning and 107.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:26:41,633 INFO L158 Benchmark]: Boogie Preprocessor took 34.56ms. Allocated memory is still 186.6MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:26:41,634 INFO L158 Benchmark]: RCFGBuilder took 391.46ms. Allocated memory is still 186.6MB. Free memory was 105.7MB in the beginning and 86.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-14 14:26:41,634 INFO L158 Benchmark]: TraceAbstraction took 2541.47ms. Allocated memory was 186.6MB in the beginning and 291.5MB in the end (delta: 104.9MB). Free memory was 86.1MB in the beginning and 129.1MB in the end (delta: -42.9MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2024-10-14 14:26:41,634 INFO L158 Benchmark]: Witness Printer took 67.08ms. Allocated memory is still 291.5MB. Free memory was 128.0MB in the beginning and 123.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 14:26:41,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.06ms. Allocated memory is still 186.6MB. Free memory was 131.3MB in the beginning and 109.8MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.38ms. Allocated memory is still 186.6MB. Free memory was 109.8MB in the beginning and 107.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.56ms. Allocated memory is still 186.6MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 391.46ms. Allocated memory is still 186.6MB. Free memory was 105.7MB in the beginning and 86.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2541.47ms. Allocated memory was 186.6MB in the beginning and 291.5MB in the end (delta: 104.9MB). Free memory was 86.1MB in the beginning and 129.1MB in the end (delta: -42.9MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. * Witness Printer took 67.08ms. Allocated memory is still 291.5MB. Free memory was 128.0MB in the beginning and 123.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 271 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 244 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 500 IncrementalHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 25 mSDtfsCounter, 500 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 14:26:41,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE