./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:37:32,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:37:32,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:37:32,311 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:37:32,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:37:32,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:37:32,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:37:32,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:37:32,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:37:32,343 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:37:32,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:37:32,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:37:32,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:37:32,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:37:32,345 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:37:32,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:37:32,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:37:32,347 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:37:32,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:37:32,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:37:32,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:37:32,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:37:32,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:37:32,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:37:32,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:37:32,352 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:37:32,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:37:32,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:37:32,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:37:32,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:37:32,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:37:32,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:37:32,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:37:32,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:37:32,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:37:32,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:37:32,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:37:32,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:37:32,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:37:32,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:37:32,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:37:32,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:37:32,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-10-14 14:37:32,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:37:32,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:37:32,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:37:32,665 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:37:32,666 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:37:32,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-14 14:37:34,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:37:34,378 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:37:34,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-14 14:37:34,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e6c1109/0484eefb68314599b5cff4740b808b52/FLAG4d1c6c5bd [2024-10-14 14:37:34,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e6c1109/0484eefb68314599b5cff4740b808b52 [2024-10-14 14:37:34,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:37:34,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:37:34,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:37:34,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:37:34,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:37:34,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ef3ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34, skipping insertion in model container [2024-10-14 14:37:34,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,452 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:37:34,641 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-10-14 14:37:34,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:37:34,670 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:37:34,697 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-10-14 14:37:34,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:37:34,720 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:37:34,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34 WrapperNode [2024-10-14 14:37:34,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:37:34,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:37:34,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:37:34,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:37:34,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,781 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 251 [2024-10-14 14:37:34,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:37:34,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:37:34,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:37:34,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:37:34,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,864 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 14:37:34,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:37:34,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:37:34,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:37:34,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:37:34,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (1/1) ... [2024-10-14 14:37:34,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:37:34,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:34,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 14:37:34,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 14:37:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:37:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:37:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:37:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:37:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:37:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:37:34,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:37:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:37:34,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:37:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:37:34,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:37:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 14:37:34,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 14:37:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:37:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:37:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:37:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:37:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:37:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:37:34,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:37:35,001 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:37:35,120 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:37:35,121 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:37:35,527 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:37:35,527 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:37:35,847 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:37:35,847 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 14:37:35,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:37:35 BoogieIcfgContainer [2024-10-14 14:37:35,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:37:35,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:37:35,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:37:35,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:37:35,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:37:34" (1/3) ... [2024-10-14 14:37:35,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253e8420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:37:35, skipping insertion in model container [2024-10-14 14:37:35,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:34" (2/3) ... [2024-10-14 14:37:35,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253e8420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:37:35, skipping insertion in model container [2024-10-14 14:37:35,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:37:35" (3/3) ... [2024-10-14 14:37:35,859 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-10-14 14:37:35,899 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:37:35,899 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:37:35,899 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:37:36,023 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-10-14 14:37:36,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 158 flow [2024-10-14 14:37:36,110 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-10-14 14:37:36,110 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:37:36,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 52 events. 9/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-10-14 14:37:36,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 158 flow [2024-10-14 14:37:36,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 132 flow [2024-10-14 14:37:36,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:37:36,140 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;@65c91c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:37:36,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 14:37:36,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:37:36,163 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-10-14 14:37:36,163 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 14:37:36,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:36,164 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] [2024-10-14 14:37:36,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:37:36,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 946166533, now seen corresponding path program 1 times [2024-10-14 14:37:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:36,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358565500] [2024-10-14 14:37:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358565500] [2024-10-14 14:37:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358565500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:36,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:37:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614663791] [2024-10-14 14:37:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:36,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 14:37:36,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:36,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 14:37:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 14:37:36,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:37:36,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:36,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:36,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:37:36,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:37,680 INFO L124 PetriNetUnfolderBase]: 8088/10948 cut-off events. [2024-10-14 14:37:37,681 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-10-14 14:37:37,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22845 conditions, 10948 events. 8088/10948 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 51527 event pairs, 6978 based on Foata normal form. 0/9835 useless extension candidates. Maximal degree in co-relation 22783. Up to 10923 conditions per place. [2024-10-14 14:37:37,750 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 44 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-10-14 14:37:37,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 214 flow [2024-10-14 14:37:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 14:37:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 14:37:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-10-14 14:37:37,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2024-10-14 14:37:37,764 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 132 flow. Second operand 2 states and 63 transitions. [2024-10-14 14:37:37,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 214 flow [2024-10-14 14:37:37,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 14:37:37,783 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 106 flow [2024-10-14 14:37:37,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-10-14 14:37:37,790 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2024-10-14 14:37:37,790 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 106 flow [2024-10-14 14:37:37,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:37,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:37,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:37:37,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:37:37,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:37:37,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1505333409, now seen corresponding path program 1 times [2024-10-14 14:37:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:37,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315617372] [2024-10-14 14:37:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:38,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:38,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315617372] [2024-10-14 14:37:38,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315617372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:38,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:38,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:37:38,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484676381] [2024-10-14 14:37:38,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:38,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:37:38,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:38,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:37:38,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:37:38,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:37:38,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:38,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:38,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:37:38,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:40,056 INFO L124 PetriNetUnfolderBase]: 19350/26141 cut-off events. [2024-10-14 14:37:40,057 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-10-14 14:37:40,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52854 conditions, 26141 events. 19350/26141 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 141908 event pairs, 6122 based on Foata normal form. 1/23284 useless extension candidates. Maximal degree in co-relation 52851. Up to 11645 conditions per place. [2024-10-14 14:37:40,223 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 106 selfloop transitions, 7 changer transitions 1/118 dead transitions. [2024-10-14 14:37:40,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 490 flow [2024-10-14 14:37:40,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:37:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:37:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-10-14 14:37:40,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2024-10-14 14:37:40,227 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 106 flow. Second operand 4 states and 147 transitions. [2024-10-14 14:37:40,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 118 transitions, 490 flow [2024-10-14 14:37:40,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 118 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:37:40,231 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 151 flow [2024-10-14 14:37:40,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2024-10-14 14:37:40,232 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-10-14 14:37:40,232 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 151 flow [2024-10-14 14:37:40,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:40,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:40,233 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, 1, 1, 1, 1, 1] [2024-10-14 14:37:40,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:37:40,233 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:37:40,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash 647531487, now seen corresponding path program 2 times [2024-10-14 14:37:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:40,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027210016] [2024-10-14 14:37:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:40,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:40,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:40,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027210016] [2024-10-14 14:37:40,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027210016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:40,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:40,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:37:40,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871530719] [2024-10-14 14:37:40,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:40,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:37:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:37:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:37:40,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:37:40,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:40,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:40,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:37:40,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:43,716 INFO L124 PetriNetUnfolderBase]: 30683/41318 cut-off events. [2024-10-14 14:37:43,716 INFO L125 PetriNetUnfolderBase]: For 4030/4030 co-relation queries the response was YES. [2024-10-14 14:37:43,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89848 conditions, 41318 events. 30683/41318 cut-off events. For 4030/4030 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 231065 event pairs, 14006 based on Foata normal form. 1/36758 useless extension candidates. Maximal degree in co-relation 89842. Up to 19516 conditions per place. [2024-10-14 14:37:43,959 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 112 selfloop transitions, 8 changer transitions 1/125 dead transitions. [2024-10-14 14:37:43,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 125 transitions, 570 flow [2024-10-14 14:37:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:37:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:37:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-10-14 14:37:43,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-10-14 14:37:43,962 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 151 flow. Second operand 4 states and 148 transitions. [2024-10-14 14:37:43,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 125 transitions, 570 flow [2024-10-14 14:37:43,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 125 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:37:43,969 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 211 flow [2024-10-14 14:37:43,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-10-14 14:37:43,970 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-10-14 14:37:43,971 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 211 flow [2024-10-14 14:37:43,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:43,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:43,972 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:37:43,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:37:43,972 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:37:43,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:43,973 INFO L85 PathProgramCache]: Analyzing trace with hash -600442014, now seen corresponding path program 1 times [2024-10-14 14:37:43,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:43,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275372742] [2024-10-14 14:37:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:43,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:44,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:44,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275372742] [2024-10-14 14:37:44,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275372742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:44,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:44,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:37:44,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723924775] [2024-10-14 14:37:44,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:44,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:37:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:44,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:37:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:37:44,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:37:44,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:44,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:44,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:37:44,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:47,891 INFO L124 PetriNetUnfolderBase]: 42068/57206 cut-off events. [2024-10-14 14:37:47,892 INFO L125 PetriNetUnfolderBase]: For 16662/16666 co-relation queries the response was YES. [2024-10-14 14:37:48,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128512 conditions, 57206 events. 42068/57206 cut-off events. For 16662/16666 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 337064 event pairs, 32096 based on Foata normal form. 1244/51696 useless extension candidates. Maximal degree in co-relation 128503. Up to 41253 conditions per place. [2024-10-14 14:37:48,176 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 102 selfloop transitions, 5 changer transitions 2/113 dead transitions. [2024-10-14 14:37:48,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 113 transitions, 601 flow [2024-10-14 14:37:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:37:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:37:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-10-14 14:37:48,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4459016393442623 [2024-10-14 14:37:48,183 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 211 flow. Second operand 5 states and 136 transitions. [2024-10-14 14:37:48,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 113 transitions, 601 flow [2024-10-14 14:37:48,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 597 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-14 14:37:48,217 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 259 flow [2024-10-14 14:37:48,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-10-14 14:37:48,218 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-10-14 14:37:48,219 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 259 flow [2024-10-14 14:37:48,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:48,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:48,220 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:37:48,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:37:48,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:37:48,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:48,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1829728221, now seen corresponding path program 1 times [2024-10-14 14:37:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486201034] [2024-10-14 14:37:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:48,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486201034] [2024-10-14 14:37:48,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486201034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:48,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:48,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:37:48,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369200379] [2024-10-14 14:37:48,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:48,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:37:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:48,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:37:48,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:37:48,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:37:48,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:48,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:48,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:37:48,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:51,440 INFO L124 PetriNetUnfolderBase]: 37183/50532 cut-off events. [2024-10-14 14:37:51,440 INFO L125 PetriNetUnfolderBase]: For 15405/15405 co-relation queries the response was YES. [2024-10-14 14:37:51,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115709 conditions, 50532 events. 37183/50532 cut-off events. For 15405/15405 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 290958 event pairs, 28958 based on Foata normal form. 382/45021 useless extension candidates. Maximal degree in co-relation 115696. Up to 41253 conditions per place. [2024-10-14 14:37:51,678 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 54 selfloop transitions, 2 changer transitions 60/120 dead transitions. [2024-10-14 14:37:51,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 634 flow [2024-10-14 14:37:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:37:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:37:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-10-14 14:37:51,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47540983606557374 [2024-10-14 14:37:51,681 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 259 flow. Second operand 5 states and 145 transitions. [2024-10-14 14:37:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 634 flow [2024-10-14 14:37:51,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 14:37:51,731 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 235 flow [2024-10-14 14:37:51,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-10-14 14:37:51,735 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-10-14 14:37:51,735 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 235 flow [2024-10-14 14:37:51,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:51,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:51,736 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:37:51,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:37:51,736 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:37:51,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1152140109, now seen corresponding path program 1 times [2024-10-14 14:37:51,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:51,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523905570] [2024-10-14 14:37:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:51,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:51,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523905570] [2024-10-14 14:37:51,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523905570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:51,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808233295] [2024-10-14 14:37:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:51,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:51,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:51,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:37:51,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:37:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:52,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 14:37:52,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:52,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:37:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:52,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808233295] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:37:52,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:37:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-14 14:37:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973227908] [2024-10-14 14:37:52,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:37:52,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 14:37:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 14:37:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:37:52,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:37:52,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 235 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:52,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:52,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:37:52,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:56,385 INFO L124 PetriNetUnfolderBase]: 46892/63464 cut-off events. [2024-10-14 14:37:56,385 INFO L125 PetriNetUnfolderBase]: For 28393/28393 co-relation queries the response was YES. [2024-10-14 14:37:56,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149702 conditions, 63464 events. 46892/63464 cut-off events. For 28393/28393 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 382516 event pairs, 24105 based on Foata normal form. 799/57084 useless extension candidates. Maximal degree in co-relation 149687. Up to 30623 conditions per place. [2024-10-14 14:37:56,769 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 159 selfloop transitions, 7 changer transitions 1/171 dead transitions. [2024-10-14 14:37:56,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 955 flow [2024-10-14 14:37:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:37:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:37:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-10-14 14:37:56,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2024-10-14 14:37:56,770 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 235 flow. Second operand 7 states and 199 transitions. [2024-10-14 14:37:56,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 955 flow [2024-10-14 14:37:56,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 171 transitions, 929 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-14 14:37:56,900 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 284 flow [2024-10-14 14:37:56,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-10-14 14:37:56,901 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-10-14 14:37:56,901 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 284 flow [2024-10-14 14:37:56,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:56,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:56,902 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:37:56,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:37:57,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 14:37:57,103 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:37:57,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -634055153, now seen corresponding path program 1 times [2024-10-14 14:37:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:57,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359335422] [2024-10-14 14:37:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:57,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359335422] [2024-10-14 14:37:57,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359335422] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211640371] [2024-10-14 14:37:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:57,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:57,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:57,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:37:57,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:37:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:57,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 14:37:57,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:57,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:37:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211640371] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:37:57,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:37:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-14 14:37:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823950609] [2024-10-14 14:37:57,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:37:57,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 14:37:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 14:37:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:37:57,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:37:57,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:57,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:57,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:37:57,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:00,853 INFO L124 PetriNetUnfolderBase]: 36481/49836 cut-off events. [2024-10-14 14:38:00,854 INFO L125 PetriNetUnfolderBase]: For 23228/23232 co-relation queries the response was YES. [2024-10-14 14:38:01,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118928 conditions, 49836 events. 36481/49836 cut-off events. For 23228/23232 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 291995 event pairs, 17518 based on Foata normal form. 1460/45364 useless extension candidates. Maximal degree in co-relation 118913. Up to 21141 conditions per place. [2024-10-14 14:38:01,160 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 84 selfloop transitions, 5 changer transitions 47/140 dead transitions. [2024-10-14 14:38:01,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 807 flow [2024-10-14 14:38:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:38:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:38:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-10-14 14:38:01,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40749414519906324 [2024-10-14 14:38:01,163 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 284 flow. Second operand 7 states and 174 transitions. [2024-10-14 14:38:01,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 807 flow [2024-10-14 14:38:01,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 799 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-14 14:38:01,186 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 278 flow [2024-10-14 14:38:01,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-10-14 14:38:01,187 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-10-14 14:38:01,187 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 278 flow [2024-10-14 14:38:01,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:01,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:01,188 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:01,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:38:01,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-14 14:38:01,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:38:01,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash -472346783, now seen corresponding path program 2 times [2024-10-14 14:38:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:01,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74477352] [2024-10-14 14:38:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:01,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:01,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74477352] [2024-10-14 14:38:01,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74477352] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:38:01,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032852203] [2024-10-14 14:38:01,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:38:01,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:01,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:38:01,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:38:01,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:38:01,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:38:01,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:38:01,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 14:38:01,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:38:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:02,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:38:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032852203] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:38:02,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:38:02,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-14 14:38:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137890984] [2024-10-14 14:38:02,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:38:02,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 14:38:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 14:38:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:38:02,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:38:02,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 278 flow. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:02,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:02,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:38:02,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:04,509 INFO L124 PetriNetUnfolderBase]: 23295/31570 cut-off events. [2024-10-14 14:38:04,509 INFO L125 PetriNetUnfolderBase]: For 25161/25165 co-relation queries the response was YES. [2024-10-14 14:38:04,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84389 conditions, 31570 events. 23295/31570 cut-off events. For 25161/25165 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 171113 event pairs, 11753 based on Foata normal form. 830/28861 useless extension candidates. Maximal degree in co-relation 84370. Up to 24876 conditions per place. [2024-10-14 14:38:04,692 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 75 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-10-14 14:38:04,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 534 flow [2024-10-14 14:38:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:38:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:38:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-10-14 14:38:04,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29508196721311475 [2024-10-14 14:38:04,693 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 278 flow. Second operand 7 states and 126 transitions. [2024-10-14 14:38:04,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 534 flow [2024-10-14 14:38:04,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 488 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-10-14 14:38:04,770 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 282 flow [2024-10-14 14:38:04,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-10-14 14:38:04,771 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-10-14 14:38:04,771 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 282 flow [2024-10-14 14:38:04,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:04,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:04,772 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:04,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 14:38:04,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:04,973 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:38:04,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1433099723, now seen corresponding path program 1 times [2024-10-14 14:38:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285601351] [2024-10-14 14:38:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:05,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:05,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285601351] [2024-10-14 14:38:05,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285601351] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:38:05,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038285826] [2024-10-14 14:38:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:05,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:38:05,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:38:05,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:38:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:05,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 14:38:05,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:38:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:05,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:38:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:05,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038285826] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:38:05,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:38:05,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-10-14 14:38:05,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992187047] [2024-10-14 14:38:05,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:38:05,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:38:05,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:38:05,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-14 14:38:05,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:38:05,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:05,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:05,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:38:05,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:06,804 INFO L124 PetriNetUnfolderBase]: 19893/26924 cut-off events. [2024-10-14 14:38:06,804 INFO L125 PetriNetUnfolderBase]: For 18095/18095 co-relation queries the response was YES. [2024-10-14 14:38:07,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69921 conditions, 26924 events. 19893/26924 cut-off events. For 18095/18095 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 141847 event pairs, 11581 based on Foata normal form. 589/24360 useless extension candidates. Maximal degree in co-relation 69906. Up to 17846 conditions per place. [2024-10-14 14:38:07,223 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 94 selfloop transitions, 6 changer transitions 1/105 dead transitions. [2024-10-14 14:38:07,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 639 flow [2024-10-14 14:38:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:38:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:38:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-10-14 14:38:07,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3469945355191257 [2024-10-14 14:38:07,224 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 282 flow. Second operand 6 states and 127 transitions. [2024-10-14 14:38:07,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 639 flow [2024-10-14 14:38:07,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 616 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-14 14:38:07,254 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 287 flow [2024-10-14 14:38:07,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-10-14 14:38:07,255 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-10-14 14:38:07,255 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 287 flow [2024-10-14 14:38:07,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:07,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:07,255 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:07,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 14:38:07,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:07,456 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:38:07,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 960638869, now seen corresponding path program 1 times [2024-10-14 14:38:07,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:07,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598189693] [2024-10-14 14:38:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:08,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:08,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598189693] [2024-10-14 14:38:08,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598189693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:38:08,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942237102] [2024-10-14 14:38:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:08,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:38:08,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:38:08,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 14:38:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:08,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 14:38:08,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:38:08,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-10-14 14:38:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:38:08,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:38:08,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:38:08,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-10-14 14:38:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:38:08,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942237102] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:38:08,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:38:08,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 13 [2024-10-14 14:38:08,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204795621] [2024-10-14 14:38:08,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:38:08,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:38:08,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:08,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:38:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:38:08,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:38:08,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 287 flow. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:08,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:08,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:38:08,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:12,817 INFO L124 PetriNetUnfolderBase]: 38600/52225 cut-off events. [2024-10-14 14:38:12,818 INFO L125 PetriNetUnfolderBase]: For 35692/35696 co-relation queries the response was YES. [2024-10-14 14:38:13,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135718 conditions, 52225 events. 38600/52225 cut-off events. For 35692/35696 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 297021 event pairs, 8521 based on Foata normal form. 3/45986 useless extension candidates. Maximal degree in co-relation 135702. Up to 20797 conditions per place. [2024-10-14 14:38:13,141 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 255 selfloop transitions, 34 changer transitions 5/298 dead transitions. [2024-10-14 14:38:13,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 298 transitions, 1671 flow [2024-10-14 14:38:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 14:38:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 14:38:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 369 transitions. [2024-10-14 14:38:13,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46532156368221944 [2024-10-14 14:38:13,143 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 287 flow. Second operand 13 states and 369 transitions. [2024-10-14 14:38:13,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 298 transitions, 1671 flow [2024-10-14 14:38:13,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 298 transitions, 1652 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 14:38:13,208 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 567 flow [2024-10-14 14:38:13,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=567, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-10-14 14:38:13,209 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-10-14 14:38:13,209 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 567 flow [2024-10-14 14:38:13,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:13,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:13,209 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:13,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 14:38:13,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 14:38:13,411 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:38:13,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2069580369, now seen corresponding path program 1 times [2024-10-14 14:38:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:13,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934723313] [2024-10-14 14:38:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:13,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:14,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:14,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934723313] [2024-10-14 14:38:14,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934723313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:38:14,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054204279] [2024-10-14 14:38:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:14,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:14,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:38:14,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:38:14,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 14:38:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:14,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 14:38:14,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:38:14,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-10-14 14:38:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:38:14,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:38:14,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:38:14,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-10-14 14:38:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:38:14,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054204279] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:38:14,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:38:14,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-10-14 14:38:14,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466112700] [2024-10-14 14:38:14,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:38:14,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 14:38:14,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 14:38:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-10-14 14:38:14,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:38:14,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 567 flow. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:14,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:14,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:38:14,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:38:20,708 INFO L124 PetriNetUnfolderBase]: 55290/74666 cut-off events. [2024-10-14 14:38:20,708 INFO L125 PetriNetUnfolderBase]: For 75230/75236 co-relation queries the response was YES. [2024-10-14 14:38:21,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206386 conditions, 74666 events. 55290/74666 cut-off events. For 75230/75236 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 443303 event pairs, 18606 based on Foata normal form. 5/65593 useless extension candidates. Maximal degree in co-relation 206365. Up to 45218 conditions per place. [2024-10-14 14:38:21,575 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 349 selfloop transitions, 59 changer transitions 7/419 dead transitions. [2024-10-14 14:38:21,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 419 transitions, 2570 flow [2024-10-14 14:38:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 14:38:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 14:38:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 532 transitions. [2024-10-14 14:38:21,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41530054644808745 [2024-10-14 14:38:21,579 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 567 flow. Second operand 21 states and 532 transitions. [2024-10-14 14:38:21,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 419 transitions, 2570 flow [2024-10-14 14:38:21,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 419 transitions, 2538 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 14:38:21,847 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 1031 flow [2024-10-14 14:38:21,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1031, PETRI_PLACES=114, PETRI_TRANSITIONS=133} [2024-10-14 14:38:21,848 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-10-14 14:38:21,848 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 1031 flow [2024-10-14 14:38:21,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:21,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:38:21,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:38:21,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 14:38:22,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:22,054 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-14 14:38:22,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:38:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash -35471879, now seen corresponding path program 2 times [2024-10-14 14:38:22,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:38:22,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40079682] [2024-10-14 14:38:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:38:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:38:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:38:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:22,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:38:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40079682] [2024-10-14 14:38:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40079682] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:38:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471652474] [2024-10-14 14:38:22,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:38:22,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:38:22,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:38:22,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:38:22,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 14:38:22,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:38:22,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:38:22,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-14 14:38:22,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:38:22,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-14 14:38:22,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-10-14 14:38:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:38:22,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:38:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:38:22,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471652474] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:38:22,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:38:22,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 16 [2024-10-14 14:38:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864707607] [2024-10-14 14:38:22,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:38:22,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 14:38:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:38:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 14:38:22,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-10-14 14:38:22,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-14 14:38:22,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 1031 flow. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:38:22,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:38:22,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-14 14:38:22,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand