./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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:27:46,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:27:47,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:27:47,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:27:47,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:27:47,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:27:47,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:27:47,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:27:47,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:27:47,077 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:27:47,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:27:47,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:27:47,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:27:47,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:27:47,079 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:27:47,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:27:47,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:27:47,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:27:47,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:27:47,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:27:47,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:27:47,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:27:47,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:27:47,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:27:47,093 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:27:47,093 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:27:47,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:27:47,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:27:47,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:27:47,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:27:47,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:27:47,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:27:47,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:27:47,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:27:47,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:27:47,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:27:47,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:27:47,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:27:47,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:27:47,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:27:47,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:27:47,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:27:47,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2024-11-20 09:27:47,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:27:47,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:27:47,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:27:47,549 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:27:47,549 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:27:47,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-20 09:27:49,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:27:49,309 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:27:49,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-20 09:27:49,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8364a3337/f8da9092d00b41f9ab13430df90a3a17/FLAGcede0cfd1 [2024-11-20 09:27:49,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8364a3337/f8da9092d00b41f9ab13430df90a3a17 [2024-11-20 09:27:49,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:27:49,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:27:49,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:27:49,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:27:49,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:27:49,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56aac61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49, skipping insertion in model container [2024-11-20 09:27:49,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:27:49,546 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-20 09:27:49,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:27:49,706 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:27:49,720 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-20 09:27:49,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:27:49,800 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:27:49,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49 WrapperNode [2024-11-20 09:27:49,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:27:49,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:27:49,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:27:49,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:27:49,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,842 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-20 09:27:49,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:27:49,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:27:49,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:27:49,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:27:49,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,918 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]. [2024-11-20 09:27:49,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,919 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:27:49,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:27:49,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:27:49,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:27:49,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (1/1) ... [2024-11-20 09:27:49,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:27:50,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:27:50,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:27:50,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:27:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:27:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:27:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-20 09:27:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-20 09:27:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-20 09:27:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-20 09:27:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-20 09:27:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-20 09:27:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-20 09:27:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-20 09:27:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:27:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:27:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:27:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:27:50,073 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:27:50,192 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:27:50,194 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:27:50,310 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:27:50,310 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:27:50,472 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:27:50,476 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 09:27:50,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:50 BoogieIcfgContainer [2024-11-20 09:27:50,480 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:27:50,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:27:50,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:27:50,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:27:50,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:49" (1/3) ... [2024-11-20 09:27:50,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366d9559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:50, skipping insertion in model container [2024-11-20 09:27:50,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:49" (2/3) ... [2024-11-20 09:27:50,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366d9559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:50, skipping insertion in model container [2024-11-20 09:27:50,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:50" (3/3) ... [2024-11-20 09:27:50,495 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-20 09:27:50,527 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:27:50,531 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:27:50,531 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:27:50,617 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 09:27:50,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-11-20 09:27:50,752 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-11-20 09:27:50,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:27:50,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-20 09:27:50,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-11-20 09:27:50,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-11-20 09:27:50,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:27:50,802 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;@746e0de1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:27:50,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 09:27:50,831 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:27:50,831 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-11-20 09:27:50,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:27:50,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:50,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:27:50,833 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)] === [2024-11-20 09:27:50,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1328358322, now seen corresponding path program 1 times [2024-11-20 09:27:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:50,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049895250] [2024-11-20 09:27:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:51,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:51,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049895250] [2024-11-20 09:27:51,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049895250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:51,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:51,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:27:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024971073] [2024-11-20 09:27:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:51,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:27:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:27:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:27:51,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-11-20 09:27:51,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:51,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:51,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-11-20 09:27:51,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:51,911 INFO L124 PetriNetUnfolderBase]: 1275/2167 cut-off events. [2024-11-20 09:27:51,911 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-20 09:27:51,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 2167 events. 1275/2167 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 14045 event pairs, 757 based on Foata normal form. 64/2202 useless extension candidates. Maximal degree in co-relation 4115. Up to 1441 conditions per place. [2024-11-20 09:27:51,948 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 30 selfloop transitions, 3 changer transitions 27/77 dead transitions. [2024-11-20 09:27:51,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 295 flow [2024-11-20 09:27:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:27:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:27:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-11-20 09:27:51,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6634920634920635 [2024-11-20 09:27:51,975 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 209 transitions. [2024-11-20 09:27:51,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 295 flow [2024-11-20 09:27:51,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 09:27:51,987 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2024-11-20 09:27:51,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2024-11-20 09:27:51,992 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-11-20 09:27:51,993 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2024-11-20 09:27:51,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:51,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:51,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:27:51,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:27:51,994 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)] === [2024-11-20 09:27:51,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash -653206641, now seen corresponding path program 1 times [2024-11-20 09:27:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:51,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335357624] [2024-11-20 09:27:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:52,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:52,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335357624] [2024-11-20 09:27:52,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335357624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:52,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:52,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:27:52,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121079804] [2024-11-20 09:27:52,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:52,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:27:52,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:27:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:27:52,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-11-20 09:27:52,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:52,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:52,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-11-20 09:27:52,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:52,668 INFO L124 PetriNetUnfolderBase]: 1115/1925 cut-off events. [2024-11-20 09:27:52,668 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-11-20 09:27:52,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1925 events. 1115/1925 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12709 event pairs, 211 based on Foata normal form. 48/1918 useless extension candidates. Maximal degree in co-relation 4537. Up to 1141 conditions per place. [2024-11-20 09:27:52,682 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 28 selfloop transitions, 3 changer transitions 25/73 dead transitions. [2024-11-20 09:27:52,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 321 flow [2024-11-20 09:27:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:27:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:27:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-11-20 09:27:52,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-11-20 09:27:52,685 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 204 transitions. [2024-11-20 09:27:52,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 321 flow [2024-11-20 09:27:52,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 304 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-20 09:27:52,701 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 129 flow [2024-11-20 09:27:52,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-11-20 09:27:52,706 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-20 09:27:52,706 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 129 flow [2024-11-20 09:27:52,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:52,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:52,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:27:52,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:27:52,707 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 2 more)] === [2024-11-20 09:27:52,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash -328127249, now seen corresponding path program 1 times [2024-11-20 09:27:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:52,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109511027] [2024-11-20 09:27:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:52,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109511027] [2024-11-20 09:27:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109511027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:52,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:52,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:27:52,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109109086] [2024-11-20 09:27:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:52,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:27:52,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:27:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:27:52,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-11-20 09:27:52,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:52,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:52,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-11-20 09:27:52,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:53,907 INFO L124 PetriNetUnfolderBase]: 2085/3511 cut-off events. [2024-11-20 09:27:53,911 INFO L125 PetriNetUnfolderBase]: For 2743/2743 co-relation queries the response was YES. [2024-11-20 09:27:53,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 3511 events. 2085/3511 cut-off events. For 2743/2743 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23514 event pairs, 229 based on Foata normal form. 90/3558 useless extension candidates. Maximal degree in co-relation 8423. Up to 1577 conditions per place. [2024-11-20 09:27:53,958 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 55 selfloop transitions, 13 changer transitions 58/142 dead transitions. [2024-11-20 09:27:53,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 727 flow [2024-11-20 09:27:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 09:27:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 09:27:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 388 transitions. [2024-11-20 09:27:53,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632478632478632 [2024-11-20 09:27:53,969 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 129 flow. Second operand 13 states and 388 transitions. [2024-11-20 09:27:53,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 727 flow [2024-11-20 09:27:54,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 681 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-20 09:27:54,008 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 258 flow [2024-11-20 09:27:54,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=258, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2024-11-20 09:27:54,009 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-11-20 09:27:54,009 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 258 flow [2024-11-20 09:27:54,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:54,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:54,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:27:54,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:27:54,010 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 2 more)] === [2024-11-20 09:27:54,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash 842735000, now seen corresponding path program 1 times [2024-11-20 09:27:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:54,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199051984] [2024-11-20 09:27:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:54,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:54,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199051984] [2024-11-20 09:27:54,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199051984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:54,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:54,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:27:54,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670531038] [2024-11-20 09:27:54,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:54,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:27:54,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:27:54,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:27:54,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-11-20 09:27:54,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:54,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:54,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-11-20 09:27:54,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:54,787 INFO L124 PetriNetUnfolderBase]: 1579/2816 cut-off events. [2024-11-20 09:27:54,787 INFO L125 PetriNetUnfolderBase]: For 11125/11155 co-relation queries the response was YES. [2024-11-20 09:27:54,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10294 conditions, 2816 events. 1579/2816 cut-off events. For 11125/11155 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20112 event pairs, 573 based on Foata normal form. 78/2800 useless extension candidates. Maximal degree in co-relation 10268. Up to 1645 conditions per place. [2024-11-20 09:27:54,815 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 52 selfloop transitions, 11 changer transitions 8/89 dead transitions. [2024-11-20 09:27:54,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 639 flow [2024-11-20 09:27:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:27:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:27:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-11-20 09:27:54,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6603174603174603 [2024-11-20 09:27:54,817 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 258 flow. Second operand 7 states and 208 transitions. [2024-11-20 09:27:54,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 639 flow [2024-11-20 09:27:54,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 545 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-11-20 09:27:54,843 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 308 flow [2024-11-20 09:27:54,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-20 09:27:54,845 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-11-20 09:27:54,845 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 308 flow [2024-11-20 09:27:54,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:54,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:54,846 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] [2024-11-20 09:27:54,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:27:54,846 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 2 more)] === [2024-11-20 09:27:54,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -7120144, now seen corresponding path program 1 times [2024-11-20 09:27:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194544870] [2024-11-20 09:27:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:54,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194544870] [2024-11-20 09:27:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194544870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:54,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:54,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:27:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996167475] [2024-11-20 09:27:54,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:54,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:27:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:27:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:27:55,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-11-20 09:27:55,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:55,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:55,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-11-20 09:27:55,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:55,810 INFO L124 PetriNetUnfolderBase]: 2404/4138 cut-off events. [2024-11-20 09:27:55,811 INFO L125 PetriNetUnfolderBase]: For 9581/9583 co-relation queries the response was YES. [2024-11-20 09:27:55,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13303 conditions, 4138 events. 2404/4138 cut-off events. For 9581/9583 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 29721 event pairs, 614 based on Foata normal form. 54/4064 useless extension candidates. Maximal degree in co-relation 13279. Up to 1301 conditions per place. [2024-11-20 09:27:55,861 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 5 changer transitions 57/116 dead transitions. [2024-11-20 09:27:55,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 908 flow [2024-11-20 09:27:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:27:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:27:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-11-20 09:27:55,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 09:27:55,863 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 308 flow. Second operand 8 states and 240 transitions. [2024-11-20 09:27:55,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 908 flow [2024-11-20 09:27:55,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 116 transitions, 858 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-11-20 09:27:55,879 INFO L231 Difference]: Finished difference. Result has 80 places, 42 transitions, 210 flow [2024-11-20 09:27:55,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=80, PETRI_TRANSITIONS=42} [2024-11-20 09:27:55,880 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-11-20 09:27:55,880 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 42 transitions, 210 flow [2024-11-20 09:27:55,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:55,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:55,881 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] [2024-11-20 09:27:55,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:27:55,881 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 2 more)] === [2024-11-20 09:27:55,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash 610323105, now seen corresponding path program 1 times [2024-11-20 09:27:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:55,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493669378] [2024-11-20 09:27:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:55,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:55,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493669378] [2024-11-20 09:27:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493669378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:55,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:55,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:27:55,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146915462] [2024-11-20 09:27:55,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:55,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:27:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:27:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:27:56,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-11-20 09:27:56,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 42 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:56,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:56,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-11-20 09:27:56,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:56,352 INFO L124 PetriNetUnfolderBase]: 1332/2433 cut-off events. [2024-11-20 09:27:56,352 INFO L125 PetriNetUnfolderBase]: For 8470/8840 co-relation queries the response was YES. [2024-11-20 09:27:56,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 2433 events. 1332/2433 cut-off events. For 8470/8840 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17011 event pairs, 423 based on Foata normal form. 54/2271 useless extension candidates. Maximal degree in co-relation 7433. Up to 602 conditions per place. [2024-11-20 09:27:56,368 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 25 selfloop transitions, 5 changer transitions 25/76 dead transitions. [2024-11-20 09:27:56,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 461 flow [2024-11-20 09:27:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:27:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:27:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-11-20 09:27:56,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-20 09:27:56,370 INFO L175 Difference]: Start difference. First operand has 80 places, 42 transitions, 210 flow. Second operand 8 states and 237 transitions. [2024-11-20 09:27:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 461 flow [2024-11-20 09:27:56,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 385 flow, removed 20 selfloop flow, removed 14 redundant places. [2024-11-20 09:27:56,377 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 191 flow [2024-11-20 09:27:56,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2024-11-20 09:27:56,378 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-11-20 09:27:56,378 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 191 flow [2024-11-20 09:27:56,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:56,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:56,379 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] [2024-11-20 09:27:56,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:27:56,379 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:27:56,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:56,379 INFO L85 PathProgramCache]: Analyzing trace with hash 461614344, now seen corresponding path program 1 times [2024-11-20 09:27:56,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:56,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310595644] [2024-11-20 09:27:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:56,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:56,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310595644] [2024-11-20 09:27:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310595644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:56,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:56,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:27:56,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049233457] [2024-11-20 09:27:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:56,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:27:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:27:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:27:56,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-11-20 09:27:56,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:56,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:56,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-11-20 09:27:56,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:56,686 INFO L124 PetriNetUnfolderBase]: 2066/3562 cut-off events. [2024-11-20 09:27:56,687 INFO L125 PetriNetUnfolderBase]: For 5224/5603 co-relation queries the response was YES. [2024-11-20 09:27:56,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9038 conditions, 3562 events. 2066/3562 cut-off events. For 5224/5603 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24108 event pairs, 660 based on Foata normal form. 141/3508 useless extension candidates. Maximal degree in co-relation 9014. Up to 1475 conditions per place. [2024-11-20 09:27:56,763 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 32 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-11-20 09:27:56,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 307 flow [2024-11-20 09:27:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:27:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:27:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-20 09:27:56,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-20 09:27:56,765 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 191 flow. Second operand 4 states and 132 transitions. [2024-11-20 09:27:56,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 307 flow [2024-11-20 09:27:56,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 283 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-20 09:27:56,777 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 213 flow [2024-11-20 09:27:56,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-11-20 09:27:56,778 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-11-20 09:27:56,778 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 213 flow [2024-11-20 09:27:56,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:56,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:56,779 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] [2024-11-20 09:27:56,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:27:56,779 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:27:56,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:56,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1414421647, now seen corresponding path program 1 times [2024-11-20 09:27:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354629831] [2024-11-20 09:27:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:56,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:56,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:56,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354629831] [2024-11-20 09:27:56,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354629831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:56,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:56,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:27:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236440182] [2024-11-20 09:27:56,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:56,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:27:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:27:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:27:56,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-11-20 09:27:56,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 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) [2024-11-20 09:27:56,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:56,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-11-20 09:27:56,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:57,211 INFO L124 PetriNetUnfolderBase]: 2028/3506 cut-off events. [2024-11-20 09:27:57,212 INFO L125 PetriNetUnfolderBase]: For 3267/4518 co-relation queries the response was YES. [2024-11-20 09:27:57,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 3506 events. 2028/3506 cut-off events. For 3267/4518 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22789 event pairs, 362 based on Foata normal form. 156/3481 useless extension candidates. Maximal degree in co-relation 9440. Up to 1492 conditions per place. [2024-11-20 09:27:57,241 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 40 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2024-11-20 09:27:57,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 388 flow [2024-11-20 09:27:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:27:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:27:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-11-20 09:27:57,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7422222222222222 [2024-11-20 09:27:57,243 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 213 flow. Second operand 5 states and 167 transitions. [2024-11-20 09:27:57,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 388 flow [2024-11-20 09:27:57,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:27:57,246 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 278 flow [2024-11-20 09:27:57,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-11-20 09:27:57,248 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-11-20 09:27:57,249 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 278 flow [2024-11-20 09:27:57,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 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) [2024-11-20 09:27:57,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:57,249 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] [2024-11-20 09:27:57,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:27:57,249 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:27:57,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1996321098, now seen corresponding path program 1 times [2024-11-20 09:27:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:57,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817802448] [2024-11-20 09:27:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:57,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:57,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:57,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817802448] [2024-11-20 09:27:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817802448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:57,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:57,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:27:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294897955] [2024-11-20 09:27:57,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:57,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:27:57,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:57,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:27:57,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:27:57,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-11-20 09:27:57,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:57,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:57,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-11-20 09:27:57,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:57,741 INFO L124 PetriNetUnfolderBase]: 1728/2946 cut-off events. [2024-11-20 09:27:57,741 INFO L125 PetriNetUnfolderBase]: For 4475/7081 co-relation queries the response was YES. [2024-11-20 09:27:57,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 2946 events. 1728/2946 cut-off events. For 4475/7081 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17716 event pairs, 124 based on Foata normal form. 154/2950 useless extension candidates. Maximal degree in co-relation 9062. Up to 1232 conditions per place. [2024-11-20 09:27:57,754 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 46 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-11-20 09:27:57,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 501 flow [2024-11-20 09:27:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:27:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:27:57,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-11-20 09:27:57,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-11-20 09:27:57,756 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 278 flow. Second operand 6 states and 200 transitions. [2024-11-20 09:27:57,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 501 flow [2024-11-20 09:27:57,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 485 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-20 09:27:57,760 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 348 flow [2024-11-20 09:27:57,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-11-20 09:27:57,760 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-11-20 09:27:57,761 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 348 flow [2024-11-20 09:27:57,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:57,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:57,761 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] [2024-11-20 09:27:57,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:27:57,761 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:27:57,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash -701924076, now seen corresponding path program 1 times [2024-11-20 09:27:57,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:57,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767645782] [2024-11-20 09:27:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:57,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767645782] [2024-11-20 09:27:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767645782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:27:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778996986] [2024-11-20 09:27:57,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:57,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:27:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:27:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:27:57,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-11-20 09:27:57,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:57,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:57,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-11-20 09:27:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:58,197 INFO L124 PetriNetUnfolderBase]: 1933/3755 cut-off events. [2024-11-20 09:27:58,197 INFO L125 PetriNetUnfolderBase]: For 8164/9225 co-relation queries the response was YES. [2024-11-20 09:27:58,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11849 conditions, 3755 events. 1933/3755 cut-off events. For 8164/9225 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28108 event pairs, 559 based on Foata normal form. 106/3444 useless extension candidates. Maximal degree in co-relation 11824. Up to 1294 conditions per place. [2024-11-20 09:27:58,221 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 29 selfloop transitions, 2 changer transitions 10/79 dead transitions. [2024-11-20 09:27:58,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 510 flow [2024-11-20 09:27:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:27:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:27:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-11-20 09:27:58,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 09:27:58,222 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 348 flow. Second operand 6 states and 180 transitions. [2024-11-20 09:27:58,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 510 flow [2024-11-20 09:27:58,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 479 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-20 09:27:58,232 INFO L231 Difference]: Finished difference. Result has 80 places, 58 transitions, 342 flow [2024-11-20 09:27:58,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2024-11-20 09:27:58,232 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-11-20 09:27:58,233 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 342 flow [2024-11-20 09:27:58,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:58,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:58,233 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] [2024-11-20 09:27:58,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 09:27:58,233 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:27:58,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash 754274482, now seen corresponding path program 2 times [2024-11-20 09:27:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858187247] [2024-11-20 09:27:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:58,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858187247] [2024-11-20 09:27:58,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858187247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:58,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:58,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:27:58,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928798586] [2024-11-20 09:27:58,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:58,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:27:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:27:58,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:27:58,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-11-20 09:27:58,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:58,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:58,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-11-20 09:27:58,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:58,607 INFO L124 PetriNetUnfolderBase]: 2389/3798 cut-off events. [2024-11-20 09:27:58,607 INFO L125 PetriNetUnfolderBase]: For 7082/9831 co-relation queries the response was YES. [2024-11-20 09:27:58,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12122 conditions, 3798 events. 2389/3798 cut-off events. For 7082/9831 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 22884 event pairs, 95 based on Foata normal form. 181/3786 useless extension candidates. Maximal degree in co-relation 12094. Up to 1628 conditions per place. [2024-11-20 09:27:58,628 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 44 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-11-20 09:27:58,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 532 flow [2024-11-20 09:27:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:27:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:27:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-11-20 09:27:58,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-20 09:27:58,630 INFO L175 Difference]: Start difference. First operand has 80 places, 58 transitions, 342 flow. Second operand 7 states and 225 transitions. [2024-11-20 09:27:58,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 532 flow [2024-11-20 09:27:58,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 506 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-20 09:27:58,640 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 379 flow [2024-11-20 09:27:58,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-11-20 09:27:58,641 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2024-11-20 09:27:58,641 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 379 flow [2024-11-20 09:27:58,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:58,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:27:58,642 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] [2024-11-20 09:27:58,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 09:27:58,642 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:27:58,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:27:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash 453035319, now seen corresponding path program 1 times [2024-11-20 09:27:58,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:27:58,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638162637] [2024-11-20 09:27:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:27:58,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:27:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:27:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:27:58,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:27:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638162637] [2024-11-20 09:27:58,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638162637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:27:58,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:27:58,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:27:58,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668682305] [2024-11-20 09:27:58,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:27:58,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:27:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:27:58,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:27:58,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:27:58,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-11-20 09:27:58,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:58,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:27:58,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-11-20 09:27:58,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:27:59,126 INFO L124 PetriNetUnfolderBase]: 2384/4430 cut-off events. [2024-11-20 09:27:59,126 INFO L125 PetriNetUnfolderBase]: For 12893/13585 co-relation queries the response was YES. [2024-11-20 09:27:59,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14755 conditions, 4430 events. 2384/4430 cut-off events. For 12893/13585 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 34590 event pairs, 560 based on Foata normal form. 53/3956 useless extension candidates. Maximal degree in co-relation 14728. Up to 1640 conditions per place. [2024-11-20 09:27:59,144 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2024-11-20 09:27:59,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 584 flow [2024-11-20 09:27:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:27:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:27:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-11-20 09:27:59,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126984126984127 [2024-11-20 09:27:59,145 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 379 flow. Second operand 7 states and 193 transitions. [2024-11-20 09:27:59,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 584 flow [2024-11-20 09:27:59,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 513 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-11-20 09:27:59,180 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-11-20 09:27:59,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-11-20 09:27:59,181 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-11-20 09:27:59,182 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-11-20 09:27:59,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:27:59,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-11-20 09:27:59,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-11-20 09:27:59,186 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-20 09:27:59,187 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-20 09:27:59,187 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-11-20 09:27:59,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 09:27:59,187 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:27:59,190 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 09:27:59,192 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 09:27:59,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:27:59 BasicIcfg [2024-11-20 09:27:59,198 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 09:27:59,198 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 09:27:59,199 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 09:27:59,199 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 09:27:59,199 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:50" (3/4) ... [2024-11-20 09:27:59,201 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 09:27:59,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-20 09:27:59,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-20 09:27:59,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-20 09:27:59,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2024-11-20 09:27:59,208 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-20 09:27:59,208 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-20 09:27:59,209 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-20 09:27:59,209 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 09:27:59,280 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 09:27:59,280 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 09:27:59,280 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 09:27:59,281 INFO L158 Benchmark]: Toolchain (without parser) took 9923.51ms. Allocated memory was 176.2MB in the beginning and 503.3MB in the end (delta: 327.2MB). Free memory was 105.1MB in the beginning and 304.7MB in the end (delta: -199.6MB). Peak memory consumption was 129.7MB. Max. memory is 16.1GB. [2024-11-20 09:27:59,281 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 09:27:59,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.99ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 81.8MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-20 09:27:59,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.08ms. Allocated memory is still 176.2MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 09:27:59,282 INFO L158 Benchmark]: Boogie Preprocessor took 104.42ms. Allocated memory is still 176.2MB. Free memory was 79.7MB in the beginning and 145.8MB in the end (delta: -66.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-11-20 09:27:59,282 INFO L158 Benchmark]: RCFGBuilder took 532.49ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 125.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 09:27:59,282 INFO L158 Benchmark]: TraceAbstraction took 8716.45ms. Allocated memory was 176.2MB in the beginning and 503.3MB in the end (delta: 327.2MB). Free memory was 124.9MB in the beginning and 309.9MB in the end (delta: -185.0MB). Peak memory consumption was 144.2MB. Max. memory is 16.1GB. [2024-11-20 09:27:59,282 INFO L158 Benchmark]: Witness Printer took 82.07ms. Allocated memory is still 503.3MB. Free memory was 308.8MB in the beginning and 304.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 09:27:59,283 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.99ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 81.8MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.08ms. Allocated memory is still 176.2MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.42ms. Allocated memory is still 176.2MB. Free memory was 79.7MB in the beginning and 145.8MB in the end (delta: -66.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * RCFGBuilder took 532.49ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 125.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8716.45ms. Allocated memory was 176.2MB in the beginning and 503.3MB in the end (delta: 327.2MB). Free memory was 124.9MB in the beginning and 309.9MB in the end (delta: -185.0MB). Peak memory consumption was 144.2MB. Max. memory is 16.1GB. * Witness Printer took 82.07ms. Allocated memory is still 503.3MB. Free memory was 308.8MB in the beginning and 304.7MB 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 9 procedures, 75 locations, 5 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: 8.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 635 mSDsluCounter, 317 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 218 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1310 IncrementalHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 99 mSDtfsCounter, 1310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=11, InterpolantAutomatonStates: 85, 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, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 1139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2024-11-20 09:27:59,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE