./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 14:29:50,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:29:50,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:29:50,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:29:50,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:29:50,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:29:50,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:29:50,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:29:50,467 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:29:50,468 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:29:50,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:29:50,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:29:50,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:29:50,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:29:50,472 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:29:50,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:29:50,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:29:50,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:29:50,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:29:50,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:29:50,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:29:50,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:29:50,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:29:50,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:29:50,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:29:50,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:29:50,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:29:50,478 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:29:50,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:29:50,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:29:50,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:29:50,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:29:50,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:29:50,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:29:50,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:29:50,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:29:50,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:29:50,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:29:50,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:29:50,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:29:50,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:29:50,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:29:50,482 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-10-11 14:29:50,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:29:50,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:29:50,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:29:50,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:29:50,739 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:29:50,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-11 14:29:52,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:29:52,318 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:29:52,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-11 14:29:52,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8265660c7/dc87c4bac828450fa222a1ff50f13ed4/FLAG736f0cce5 [2024-10-11 14:29:52,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8265660c7/dc87c4bac828450fa222a1ff50f13ed4 [2024-10-11 14:29:52,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:29:52,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:29:52,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:29:52,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:29:52,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:29:52,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129b1ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52, skipping insertion in model container [2024-10-11 14:29:52,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:29:52,602 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] [2024-10-11 14:29:52,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:29:52,632 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:29:52,670 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] [2024-10-11 14:29:52,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:29:52,695 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:29:52,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52 WrapperNode [2024-10-11 14:29:52,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:29:52,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:29:52,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:29:52,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:29:52,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,744 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 251 [2024-10-11 14:29:52,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:29:52,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:29:52,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:29:52,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:29:52,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,776 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]. [2024-10-11 14:29:52,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:29:52,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:29:52,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:29:52,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:29:52,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (1/1) ... [2024-10-11 14:29:52,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:29:52,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:52,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:29:52,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:29:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:29:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:29:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:29:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:29:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:29:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:29:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:29:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:29:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:29:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 14:29:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:29:52,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:29:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:29:52,882 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:29:52,984 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:29:52,986 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:29:53,343 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:29:53,344 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:29:53,666 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:29:53,667 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 14:29:53,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:53 BoogieIcfgContainer [2024-10-11 14:29:53,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:29:53,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:29:53,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:29:53,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:29:53,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:52" (1/3) ... [2024-10-11 14:29:53,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e4fa01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:53, skipping insertion in model container [2024-10-11 14:29:53,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:52" (2/3) ... [2024-10-11 14:29:53,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e4fa01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:53, skipping insertion in model container [2024-10-11 14:29:53,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:53" (3/3) ... [2024-10-11 14:29:53,678 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-10-11 14:29:53,697 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:29:53,697 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:29:53,698 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:29:53,770 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-10-11 14:29:53,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 158 flow [2024-10-11 14:29:53,855 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-10-11 14:29:53,855 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:29:53,859 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. [2024-10-11 14:29:53,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 158 flow [2024-10-11 14:29:53,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 132 flow [2024-10-11 14:29:53,874 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:29:53,882 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;@2ab44605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:29:53,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 14:29:53,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:29:53,902 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-10-11 14:29:53,902 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:29:53,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:53,903 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] [2024-10-11 14:29:53,903 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)] === [2024-10-11 14:29:53,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:53,908 INFO L85 PathProgramCache]: Analyzing trace with hash 946166533, now seen corresponding path program 1 times [2024-10-11 14:29:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:53,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518586186] [2024-10-11 14:29:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:54,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518586186] [2024-10-11 14:29:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518586186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:29:54,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213063881] [2024-10-11 14:29:54,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:54,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:29:54,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:29:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:29:54,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:29:54,230 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) [2024-10-11 14:29:54,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:54,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:29:54,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:55,391 INFO L124 PetriNetUnfolderBase]: 8088/10948 cut-off events. [2024-10-11 14:29:55,392 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-10-11 14:29:55,408 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. [2024-10-11 14:29:55,457 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 44 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-10-11 14:29:55,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 214 flow [2024-10-11 14:29:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:29:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:29:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-10-11 14:29:55,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2024-10-11 14:29:55,468 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 132 flow. Second operand 2 states and 63 transitions. [2024-10-11 14:29:55,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 214 flow [2024-10-11 14:29:55,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 14:29:55,489 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 106 flow [2024-10-11 14:29:55,491 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} [2024-10-11 14:29:55,494 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2024-10-11 14:29:55,495 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 106 flow [2024-10-11 14:29:55,495 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) [2024-10-11 14:29:55,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:55,495 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] [2024-10-11 14:29:55,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:29:55,496 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)] === [2024-10-11 14:29:55,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:55,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1505333409, now seen corresponding path program 1 times [2024-10-11 14:29:55,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:55,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888844438] [2024-10-11 14:29:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:55,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:55,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:55,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888844438] [2024-10-11 14:29:55,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888844438] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:55,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:55,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:29:55,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487500318] [2024-10-11 14:29:55,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:55,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:29:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:29:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:29:55,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:29:55,735 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) [2024-10-11 14:29:55,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:55,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:29:55,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:57,667 INFO L124 PetriNetUnfolderBase]: 19350/26141 cut-off events. [2024-10-11 14:29:57,668 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-10-11 14:29:57,715 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. [2024-10-11 14:29:57,925 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 106 selfloop transitions, 7 changer transitions 1/118 dead transitions. [2024-10-11 14:29:57,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 490 flow [2024-10-11 14:29:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:29:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:29:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-10-11 14:29:57,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2024-10-11 14:29:57,931 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 106 flow. Second operand 4 states and 147 transitions. [2024-10-11 14:29:57,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 118 transitions, 490 flow [2024-10-11 14:29:57,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 118 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:29:57,936 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 151 flow [2024-10-11 14:29:57,937 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} [2024-10-11 14:29:57,937 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-10-11 14:29:57,938 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 151 flow [2024-10-11 14:29:57,938 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) [2024-10-11 14:29:57,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:57,938 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] [2024-10-11 14:29:57,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:29:57,940 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)] === [2024-10-11 14:29:57,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 647531487, now seen corresponding path program 2 times [2024-10-11 14:29:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857223714] [2024-10-11 14:29:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:58,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:58,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857223714] [2024-10-11 14:29:58,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857223714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:58,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:58,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:29:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739731312] [2024-10-11 14:29:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:58,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:29:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:29:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:29:58,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:29:58,093 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) [2024-10-11 14:29:58,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:58,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:29:58,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:01,038 INFO L124 PetriNetUnfolderBase]: 30683/41318 cut-off events. [2024-10-11 14:30:01,039 INFO L125 PetriNetUnfolderBase]: For 4030/4030 co-relation queries the response was YES. [2024-10-11 14:30:01,129 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. [2024-10-11 14:30:01,317 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 112 selfloop transitions, 8 changer transitions 1/125 dead transitions. [2024-10-11 14:30:01,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 125 transitions, 570 flow [2024-10-11 14:30:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:30:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:30:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-10-11 14:30:01,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-10-11 14:30:01,320 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 151 flow. Second operand 4 states and 148 transitions. [2024-10-11 14:30:01,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 125 transitions, 570 flow [2024-10-11 14:30:01,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 125 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:30:01,326 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 211 flow [2024-10-11 14:30:01,326 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} [2024-10-11 14:30:01,327 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-10-11 14:30:01,327 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 211 flow [2024-10-11 14:30:01,328 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) [2024-10-11 14:30:01,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:01,328 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] [2024-10-11 14:30:01,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:30:01,329 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)] === [2024-10-11 14:30:01,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -600442014, now seen corresponding path program 1 times [2024-10-11 14:30:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888976733] [2024-10-11 14:30:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:01,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888976733] [2024-10-11 14:30:01,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888976733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:01,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:01,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:30:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019782392] [2024-10-11 14:30:01,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:01,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:30:01,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:30:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:30:01,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:01,539 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) [2024-10-11 14:30:01,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:01,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:01,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:04,735 INFO L124 PetriNetUnfolderBase]: 42068/57206 cut-off events. [2024-10-11 14:30:04,735 INFO L125 PetriNetUnfolderBase]: For 16662/16666 co-relation queries the response was YES. [2024-10-11 14:30:04,966 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. [2024-10-11 14:30:05,124 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 102 selfloop transitions, 5 changer transitions 2/113 dead transitions. [2024-10-11 14:30:05,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 113 transitions, 601 flow [2024-10-11 14:30:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:30:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:30:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-10-11 14:30:05,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4459016393442623 [2024-10-11 14:30:05,127 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 211 flow. Second operand 5 states and 136 transitions. [2024-10-11 14:30:05,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 113 transitions, 601 flow [2024-10-11 14:30:05,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 597 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-11 14:30:05,147 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 259 flow [2024-10-11 14:30:05,148 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} [2024-10-11 14:30:05,148 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-10-11 14:30:05,149 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 259 flow [2024-10-11 14:30:05,149 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) [2024-10-11 14:30:05,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:05,149 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] [2024-10-11 14:30:05,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:30:05,150 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)] === [2024-10-11 14:30:05,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:05,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1829728221, now seen corresponding path program 1 times [2024-10-11 14:30:05,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478230679] [2024-10-11 14:30:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:05,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478230679] [2024-10-11 14:30:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478230679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:05,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:30:05,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610761528] [2024-10-11 14:30:05,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:05,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:30:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:05,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:30:05,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:30:05,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:05,283 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) [2024-10-11 14:30:05,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:05,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:05,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:08,166 INFO L124 PetriNetUnfolderBase]: 37183/50532 cut-off events. [2024-10-11 14:30:08,167 INFO L125 PetriNetUnfolderBase]: For 15405/15405 co-relation queries the response was YES. [2024-10-11 14:30:08,356 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. [2024-10-11 14:30:08,485 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 54 selfloop transitions, 2 changer transitions 60/120 dead transitions. [2024-10-11 14:30:08,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 634 flow [2024-10-11 14:30:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:30:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:30:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-10-11 14:30:08,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47540983606557374 [2024-10-11 14:30:08,487 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 259 flow. Second operand 5 states and 145 transitions. [2024-10-11 14:30:08,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 634 flow [2024-10-11 14:30:08,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 630 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:08,528 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 235 flow [2024-10-11 14:30:08,528 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} [2024-10-11 14:30:08,529 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-10-11 14:30:08,529 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 235 flow [2024-10-11 14:30:08,529 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) [2024-10-11 14:30:08,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:08,530 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] [2024-10-11 14:30:08,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:30:08,530 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)] === [2024-10-11 14:30:08,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1152140109, now seen corresponding path program 1 times [2024-10-11 14:30:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187329148] [2024-10-11 14:30:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:08,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:08,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:08,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187329148] [2024-10-11 14:30:08,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187329148] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:08,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222303127] [2024-10-11 14:30:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:08,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:08,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:08,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:30:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:08,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 14:30:08,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:09,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222303127] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:09,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:09,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-11 14:30:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062404615] [2024-10-11 14:30:09,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:09,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:30:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:30:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:30:09,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:09,164 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) [2024-10-11 14:30:09,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:09,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:09,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:13,152 INFO L124 PetriNetUnfolderBase]: 46892/63464 cut-off events. [2024-10-11 14:30:13,152 INFO L125 PetriNetUnfolderBase]: For 28393/28393 co-relation queries the response was YES. [2024-10-11 14:30:13,379 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. [2024-10-11 14:30:13,594 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 159 selfloop transitions, 7 changer transitions 1/171 dead transitions. [2024-10-11 14:30:13,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 955 flow [2024-10-11 14:30:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:30:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:30:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-10-11 14:30:13,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2024-10-11 14:30:13,597 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 235 flow. Second operand 7 states and 199 transitions. [2024-10-11 14:30:13,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 955 flow [2024-10-11 14:30:13,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 171 transitions, 929 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-11 14:30:13,740 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 284 flow [2024-10-11 14:30:13,740 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} [2024-10-11 14:30:13,741 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-10-11 14:30:13,741 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 284 flow [2024-10-11 14:30:13,741 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) [2024-10-11 14:30:13,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:13,742 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] [2024-10-11 14:30:13,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:30:13,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:13,943 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)] === [2024-10-11 14:30:13,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash -634055153, now seen corresponding path program 1 times [2024-10-11 14:30:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704883468] [2024-10-11 14:30:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:13,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704883468] [2024-10-11 14:30:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704883468] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777720029] [2024-10-11 14:30:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:14,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:14,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:30:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:14,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 14:30:14,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:14,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:14,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777720029] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:14,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:14,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-11 14:30:14,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477452898] [2024-10-11 14:30:14,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:14,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:30:14,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:14,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:30:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:30:14,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:14,462 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) [2024-10-11 14:30:14,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:14,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:14,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:17,601 INFO L124 PetriNetUnfolderBase]: 36481/49836 cut-off events. [2024-10-11 14:30:17,602 INFO L125 PetriNetUnfolderBase]: For 23228/23232 co-relation queries the response was YES. [2024-10-11 14:30:17,762 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. [2024-10-11 14:30:17,906 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 84 selfloop transitions, 5 changer transitions 47/140 dead transitions. [2024-10-11 14:30:17,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 807 flow [2024-10-11 14:30:17,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:30:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:30:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-10-11 14:30:17,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40749414519906324 [2024-10-11 14:30:17,908 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 284 flow. Second operand 7 states and 174 transitions. [2024-10-11 14:30:17,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 807 flow [2024-10-11 14:30:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 140 transitions, 799 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:17,926 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 278 flow [2024-10-11 14:30:17,926 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} [2024-10-11 14:30:17,927 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-10-11 14:30:17,927 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 278 flow [2024-10-11 14:30:17,927 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) [2024-10-11 14:30:17,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:17,928 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] [2024-10-11 14:30:17,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:30:18,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:18,133 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)] === [2024-10-11 14:30:18,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -472346783, now seen corresponding path program 2 times [2024-10-11 14:30:18,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:18,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786299630] [2024-10-11 14:30:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:18,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786299630] [2024-10-11 14:30:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786299630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65850716] [2024-10-11 14:30:18,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:30:18,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:18,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:18,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:18,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:30:18,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:30:18,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:30:18,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 14:30:18,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:18,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65850716] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:18,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-11 14:30:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062271375] [2024-10-11 14:30:18,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:18,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:30:18,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:30:18,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:30:18,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:18,639 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) [2024-10-11 14:30:18,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:18,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:20,908 INFO L124 PetriNetUnfolderBase]: 23295/31570 cut-off events. [2024-10-11 14:30:20,909 INFO L125 PetriNetUnfolderBase]: For 25161/25165 co-relation queries the response was YES. [2024-10-11 14:30:21,020 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. [2024-10-11 14:30:21,102 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 75 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-10-11 14:30:21,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 534 flow [2024-10-11 14:30:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:30:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:30:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-10-11 14:30:21,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29508196721311475 [2024-10-11 14:30:21,103 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 278 flow. Second operand 7 states and 126 transitions. [2024-10-11 14:30:21,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 534 flow [2024-10-11 14:30:21,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 488 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-10-11 14:30:21,195 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 282 flow [2024-10-11 14:30:21,195 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} [2024-10-11 14:30:21,196 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-10-11 14:30:21,196 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 282 flow [2024-10-11 14:30:21,196 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) [2024-10-11 14:30:21,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:21,196 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] [2024-10-11 14:30:21,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:30:21,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:21,397 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)] === [2024-10-11 14:30:21,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1433099723, now seen corresponding path program 1 times [2024-10-11 14:30:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:21,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829120594] [2024-10-11 14:30:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:21,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:21,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829120594] [2024-10-11 14:30:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829120594] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071227004] [2024-10-11 14:30:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:21,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:21,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:21,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:21,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:30:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:21,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 14:30:21,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:21,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:21,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071227004] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:21,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:30:21,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-10-11 14:30:21,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121979005] [2024-10-11 14:30:21,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:21,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:30:21,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:30:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:30:21,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:21,754 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) [2024-10-11 14:30:21,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:21,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:21,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:23,548 INFO L124 PetriNetUnfolderBase]: 19893/26924 cut-off events. [2024-10-11 14:30:23,548 INFO L125 PetriNetUnfolderBase]: For 18095/18095 co-relation queries the response was YES. [2024-10-11 14:30:23,619 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. [2024-10-11 14:30:23,696 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 94 selfloop transitions, 6 changer transitions 1/105 dead transitions. [2024-10-11 14:30:23,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 639 flow [2024-10-11 14:30:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:30:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:30:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-10-11 14:30:23,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3469945355191257 [2024-10-11 14:30:23,697 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 282 flow. Second operand 6 states and 127 transitions. [2024-10-11 14:30:23,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 639 flow [2024-10-11 14:30:23,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 616 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 14:30:23,725 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 287 flow [2024-10-11 14:30:23,726 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} [2024-10-11 14:30:23,726 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-10-11 14:30:23,726 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 287 flow [2024-10-11 14:30:23,727 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) [2024-10-11 14:30:23,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:23,727 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] [2024-10-11 14:30:23,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:30:23,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 14:30:23,928 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)] === [2024-10-11 14:30:23,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash 960638869, now seen corresponding path program 1 times [2024-10-11 14:30:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084813958] [2024-10-11 14:30:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:24,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:24,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084813958] [2024-10-11 14:30:24,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084813958] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930802357] [2024-10-11 14:30:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:24,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:24,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:24,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:24,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:30:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:24,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 14:30:24,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:25,057 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 [2024-10-11 14:30:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:30:25,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:25,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:30:25,188 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 [2024-10-11 14:30:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:30:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930802357] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:25,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 13 [2024-10-11 14:30:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977089452] [2024-10-11 14:30:25,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:25,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:30:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:30:25,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:30:25,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:25,246 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) [2024-10-11 14:30:25,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:25,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:25,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:29,501 INFO L124 PetriNetUnfolderBase]: 38600/52225 cut-off events. [2024-10-11 14:30:29,502 INFO L125 PetriNetUnfolderBase]: For 35692/35696 co-relation queries the response was YES. [2024-10-11 14:30:29,689 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. [2024-10-11 14:30:29,832 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 255 selfloop transitions, 34 changer transitions 5/298 dead transitions. [2024-10-11 14:30:29,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 298 transitions, 1671 flow [2024-10-11 14:30:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:30:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:30:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 369 transitions. [2024-10-11 14:30:29,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46532156368221944 [2024-10-11 14:30:29,834 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 287 flow. Second operand 13 states and 369 transitions. [2024-10-11 14:30:29,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 298 transitions, 1671 flow [2024-10-11 14:30:29,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 298 transitions, 1652 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:30:29,883 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 567 flow [2024-10-11 14:30:29,884 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} [2024-10-11 14:30:29,884 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-10-11 14:30:29,884 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 567 flow [2024-10-11 14:30:29,885 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) [2024-10-11 14:30:29,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:29,885 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] [2024-10-11 14:30:29,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 14:30:30,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 14:30:30,086 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)] === [2024-10-11 14:30:30,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2069580369, now seen corresponding path program 1 times [2024-10-11 14:30:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904344247] [2024-10-11 14:30:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904344247] [2024-10-11 14:30:30,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904344247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643122647] [2024-10-11 14:30:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:30,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:30,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:30,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:30:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:30,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 14:30:30,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:31,059 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 [2024-10-11 14:30:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:30:31,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:31,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:30:31,164 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 [2024-10-11 14:30:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:30:31,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643122647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:31,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:31,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-10-11 14:30:31,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474845439] [2024-10-11 14:30:31,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:31,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:30:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:30:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:30:31,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:31,203 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) [2024-10-11 14:30:31,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:31,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:31,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:37,643 INFO L124 PetriNetUnfolderBase]: 55290/74666 cut-off events. [2024-10-11 14:30:37,643 INFO L125 PetriNetUnfolderBase]: For 75230/75236 co-relation queries the response was YES. [2024-10-11 14:30:37,961 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. [2024-10-11 14:30:38,148 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 349 selfloop transitions, 59 changer transitions 7/419 dead transitions. [2024-10-11 14:30:38,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 419 transitions, 2570 flow [2024-10-11 14:30:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:30:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:30:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 532 transitions. [2024-10-11 14:30:38,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41530054644808745 [2024-10-11 14:30:38,151 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 567 flow. Second operand 21 states and 532 transitions. [2024-10-11 14:30:38,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 419 transitions, 2570 flow [2024-10-11 14:30:38,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 419 transitions, 2538 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 14:30:38,388 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 1031 flow [2024-10-11 14:30:38,388 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} [2024-10-11 14:30:38,389 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-10-11 14:30:38,389 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 1031 flow [2024-10-11 14:30:38,389 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) [2024-10-11 14:30:38,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:38,390 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] [2024-10-11 14:30:38,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 14:30:38,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 14:30:38,594 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)] === [2024-10-11 14:30:38,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:38,595 INFO L85 PathProgramCache]: Analyzing trace with hash -35471879, now seen corresponding path program 2 times [2024-10-11 14:30:38,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:38,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817158163] [2024-10-11 14:30:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:38,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:39,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:39,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817158163] [2024-10-11 14:30:39,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817158163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:39,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720091694] [2024-10-11 14:30:39,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:30:39,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:39,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:39,102 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:39,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:30:39,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:30:39,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:30:39,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-11 14:30:39,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:39,217 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 [2024-10-11 14:30:39,603 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 [2024-10-11 14:30:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:39,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:30:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720091694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:30:39,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:30:39,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 16 [2024-10-11 14:30:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153379143] [2024-10-11 14:30:39,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:30:39,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:30:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:30:39,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:30:39,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-10-11 14:30:39,752 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) [2024-10-11 14:30:39,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:39,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-10-11 14:30:39,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand