./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix036.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix036.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:11:52,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:11:52,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:11:52,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:11:52,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:11:52,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:11:52,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:11:52,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:11:52,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:11:52,526 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:11:52,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:11:52,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:11:52,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:11:52,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:11:52,528 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:11:52,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:11:52,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:11:52,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:11:52,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:11:52,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:11:52,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:11:52,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:11:52,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:11:52,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:11:52,532 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:11:52,532 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:11:52,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:11:52,533 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:11:52,533 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:11:52,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:11:52,534 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:11:52,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:11:52,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:11:52,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:11:52,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:11:52,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:11:52,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:11:52,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:11:52,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:11:52,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:11:52,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:11:52,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:11:52,540 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 [2024-11-16 19:11:52,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:11:52,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:11:52,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:11:52,835 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:11:52,836 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:11:52,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2024-11-16 19:11:54,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:11:54,724 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:11:54,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2024-11-16 19:11:54,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc5d0a19/e23a22a183944d0f92972b98fd6710e9/FLAG1ea4d18a5 [2024-11-16 19:11:55,035 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc5d0a19/e23a22a183944d0f92972b98fd6710e9 [2024-11-16 19:11:55,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:11:55,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:11:55,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:11:55,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:11:55,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:11:55,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b956fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55, skipping insertion in model container [2024-11-16 19:11:55,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:11:55,303 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix036.oepc.i[945,958] [2024-11-16 19:11:55,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:11:55,555 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:11:55,569 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix036.oepc.i[945,958] [2024-11-16 19:11:55,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:11:55,661 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:11:55,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55 WrapperNode [2024-11-16 19:11:55,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:11:55,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:11:55,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:11:55,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:11:55,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,724 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2024-11-16 19:11:55,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:11:55,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:11:55,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:11:55,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:11:55,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,768 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:11:55,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,771 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,781 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:11:55,801 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:11:55,801 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:11:55,801 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:11:55,802 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (1/1) ... [2024-11-16 19:11:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:11:55,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:11:55,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:11:55,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:11:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:11:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:11:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:11:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:11:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:11:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:11:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:11:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:11:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:11:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:11:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:11:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:11:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:11:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:11:55,902 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:11:56,144 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:11:56,146 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:11:56,507 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:11:56,507 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:11:56,713 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:11:56,713 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:11:56,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:11:56 BoogieIcfgContainer [2024-11-16 19:11:56,714 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:11:56,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:11:56,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:11:56,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:11:56,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:11:55" (1/3) ... [2024-11-16 19:11:56,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799ce9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:11:56, skipping insertion in model container [2024-11-16 19:11:56,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:11:55" (2/3) ... [2024-11-16 19:11:56,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799ce9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:11:56, skipping insertion in model container [2024-11-16 19:11:56,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:11:56" (3/3) ... [2024-11-16 19:11:56,723 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2024-11-16 19:11:56,736 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:11:56,736 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:11:56,736 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:11:56,800 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:11:56,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:11:56,877 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-11-16 19:11:56,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:11:56,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-16 19:11:56,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:11:56,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-11-16 19:11:56,893 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:11:56,900 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;@695da93d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:11:56,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:11:56,904 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:11:56,905 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-16 19:11:56,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:11:56,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:11:56,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-16 19:11:56,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:11:56,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:11:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash 13487462, now seen corresponding path program 1 times [2024-11-16 19:11:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:11:56,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851976226] [2024-11-16 19:11:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:11:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:11:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:11:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:11:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:11:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851976226] [2024-11-16 19:11:57,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851976226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:11:57,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:11:57,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:11:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079003728] [2024-11-16 19:11:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:11:57,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:11:57,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:11:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:11:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:11:57,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:11:57,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:11:57,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:11:57,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:11:57,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:04,637 INFO L124 PetriNetUnfolderBase]: 51971/68446 cut-off events. [2024-11-16 19:12:04,637 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-11-16 19:12:04,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137010 conditions, 68446 events. 51971/68446 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 415008 event pairs, 6431 based on Foata normal form. 1728/70127 useless extension candidates. Maximal degree in co-relation 136998. Up to 58931 conditions per place. [2024-11-16 19:12:05,066 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 65 selfloop transitions, 2 changer transitions 2/75 dead transitions. [2024-11-16 19:12:05,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 309 flow [2024-11-16 19:12:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:12:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:12:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-16 19:12:05,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-11-16 19:12:05,081 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 102 transitions. [2024-11-16 19:12:05,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 309 flow [2024-11-16 19:12:05,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 302 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:12:05,094 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:05,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-16 19:12:05,100 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-11-16 19:12:05,102 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:05,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:05,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:05,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:05,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:12:05,104 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:05,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash 194307072, now seen corresponding path program 1 times [2024-11-16 19:12:05,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:05,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849733767] [2024-11-16 19:12:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:05,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849733767] [2024-11-16 19:12:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849733767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:05,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:05,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:12:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682753374] [2024-11-16 19:12:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:05,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:12:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:12:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:12:05,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:05,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:05,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:05,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:05,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:13,675 INFO L124 PetriNetUnfolderBase]: 67379/90255 cut-off events. [2024-11-16 19:12:13,676 INFO L125 PetriNetUnfolderBase]: For 3494/3494 co-relation queries the response was YES. [2024-11-16 19:12:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182807 conditions, 90255 events. 67379/90255 cut-off events. For 3494/3494 co-relation queries the response was YES. Maximal size of possible extension queue 2628. Compared 558973 event pairs, 32615 based on Foata normal form. 0/88535 useless extension candidates. Maximal degree in co-relation 182797. Up to 59701 conditions per place. [2024-11-16 19:12:14,144 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 51 selfloop transitions, 5 changer transitions 90/151 dead transitions. [2024-11-16 19:12:14,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 151 transitions, 624 flow [2024-11-16 19:12:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:12:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:12:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-11-16 19:12:14,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-16 19:12:14,152 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 220 transitions. [2024-11-16 19:12:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 151 transitions, 624 flow [2024-11-16 19:12:14,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 151 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:12:14,159 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2024-11-16 19:12:14,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-11-16 19:12:14,160 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-11-16 19:12:14,161 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2024-11-16 19:12:14,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:14,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:14,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:14,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:12:14,162 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:14,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1236235316, now seen corresponding path program 1 times [2024-11-16 19:12:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:14,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325857707] [2024-11-16 19:12:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:14,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:14,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:14,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325857707] [2024-11-16 19:12:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325857707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:14,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:12:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294793578] [2024-11-16 19:12:14,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:14,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:12:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:12:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:12:14,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:14,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:14,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:14,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:21,228 INFO L124 PetriNetUnfolderBase]: 49463/66307 cut-off events. [2024-11-16 19:12:21,228 INFO L125 PetriNetUnfolderBase]: For 49150/49150 co-relation queries the response was YES. [2024-11-16 19:12:21,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168762 conditions, 66307 events. 49463/66307 cut-off events. For 49150/49150 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 391466 event pairs, 12727 based on Foata normal form. 1664/67926 useless extension candidates. Maximal degree in co-relation 168747. Up to 37153 conditions per place. [2024-11-16 19:12:21,587 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 57 selfloop transitions, 3 changer transitions 77/142 dead transitions. [2024-11-16 19:12:21,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 142 transitions, 727 flow [2024-11-16 19:12:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:12:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:12:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-11-16 19:12:21,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5657142857142857 [2024-11-16 19:12:21,589 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 198 transitions. [2024-11-16 19:12:21,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 142 transitions, 727 flow [2024-11-16 19:12:22,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 142 transitions, 714 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-16 19:12:22,831 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2024-11-16 19:12:22,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-11-16 19:12:22,832 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-16 19:12:22,832 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2024-11-16 19:12:22,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:22,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:22,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:22,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:12:22,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:22,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash -997921094, now seen corresponding path program 1 times [2024-11-16 19:12:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899239474] [2024-11-16 19:12:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:22,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:22,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899239474] [2024-11-16 19:12:22,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899239474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:12:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15233262] [2024-11-16 19:12:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:22,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:12:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:12:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:12:22,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:22,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:22,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:22,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:22,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:27,094 INFO L124 PetriNetUnfolderBase]: 36911/50227 cut-off events. [2024-11-16 19:12:27,095 INFO L125 PetriNetUnfolderBase]: For 45342/45342 co-relation queries the response was YES. [2024-11-16 19:12:27,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129608 conditions, 50227 events. 36911/50227 cut-off events. For 45342/45342 co-relation queries the response was YES. Maximal size of possible extension queue 1395. Compared 302765 event pairs, 4643 based on Foata normal form. 1728/51920 useless extension candidates. Maximal degree in co-relation 129589. Up to 27973 conditions per place. [2024-11-16 19:12:27,506 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 82 selfloop transitions, 6 changer transitions 1/94 dead transitions. [2024-11-16 19:12:27,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 94 transitions, 493 flow [2024-11-16 19:12:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:12:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:12:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-16 19:12:27,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-16 19:12:27,513 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 4 states and 127 transitions. [2024-11-16 19:12:27,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 94 transitions, 493 flow [2024-11-16 19:12:27,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 475 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-16 19:12:27,821 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 187 flow [2024-11-16 19:12:27,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-11-16 19:12:27,822 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-11-16 19:12:27,822 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 187 flow [2024-11-16 19:12:27,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:27,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:27,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:27,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:12:27,824 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:27,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -65711875, now seen corresponding path program 1 times [2024-11-16 19:12:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:27,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492956774] [2024-11-16 19:12:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:27,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:28,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:28,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492956774] [2024-11-16 19:12:28,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492956774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:28,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:12:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28370465] [2024-11-16 19:12:28,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:28,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:12:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:12:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:12:28,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:28,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:28,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:28,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:28,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:30,633 INFO L124 PetriNetUnfolderBase]: 24319/33475 cut-off events. [2024-11-16 19:12:30,634 INFO L125 PetriNetUnfolderBase]: For 30108/30108 co-relation queries the response was YES. [2024-11-16 19:12:30,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91694 conditions, 33475 events. 24319/33475 cut-off events. For 30108/30108 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 192837 event pairs, 2675 based on Foata normal form. 1344/34784 useless extension candidates. Maximal degree in co-relation 91677. Up to 12853 conditions per place. [2024-11-16 19:12:30,801 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 105 selfloop transitions, 10 changer transitions 1/121 dead transitions. [2024-11-16 19:12:30,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 665 flow [2024-11-16 19:12:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:12:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:12:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-16 19:12:30,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.656 [2024-11-16 19:12:30,813 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 187 flow. Second operand 5 states and 164 transitions. [2024-11-16 19:12:30,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 665 flow [2024-11-16 19:12:30,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 654 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:12:30,836 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 239 flow [2024-11-16 19:12:30,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-11-16 19:12:30,837 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-11-16 19:12:30,837 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 239 flow [2024-11-16 19:12:30,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:30,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:30,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:30,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:12:30,838 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:30,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 546049072, now seen corresponding path program 1 times [2024-11-16 19:12:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:30,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941528658] [2024-11-16 19:12:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:30,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:31,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941528658] [2024-11-16 19:12:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941528658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:31,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:31,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:12:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858731175] [2024-11-16 19:12:31,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:31,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:12:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:12:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:12:31,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:31,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:31,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:31,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:31,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:37,518 INFO L124 PetriNetUnfolderBase]: 43279/59382 cut-off events. [2024-11-16 19:12:37,519 INFO L125 PetriNetUnfolderBase]: For 70937/70937 co-relation queries the response was YES. [2024-11-16 19:12:37,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174851 conditions, 59382 events. 43279/59382 cut-off events. For 70937/70937 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 363523 event pairs, 12503 based on Foata normal form. 320/59654 useless extension candidates. Maximal degree in co-relation 174832. Up to 25254 conditions per place. [2024-11-16 19:12:37,901 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 129 selfloop transitions, 10 changer transitions 95/239 dead transitions. [2024-11-16 19:12:37,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 239 transitions, 1548 flow [2024-11-16 19:12:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:12:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:12:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-11-16 19:12:37,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-16 19:12:37,903 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 239 flow. Second operand 11 states and 290 transitions. [2024-11-16 19:12:37,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 239 transitions, 1548 flow [2024-11-16 19:12:38,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 239 transitions, 1426 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-11-16 19:12:38,176 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 281 flow [2024-11-16 19:12:38,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=281, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2024-11-16 19:12:38,177 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2024-11-16 19:12:38,177 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 281 flow [2024-11-16 19:12:38,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:38,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:38,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:38,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:12:38,181 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:38,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash -405118444, now seen corresponding path program 2 times [2024-11-16 19:12:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979113613] [2024-11-16 19:12:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979113613] [2024-11-16 19:12:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979113613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:38,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:38,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:12:38,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034443071] [2024-11-16 19:12:38,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:38,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:12:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:38,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:12:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:12:38,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:38,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:38,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:38,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:38,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:41,423 INFO L124 PetriNetUnfolderBase]: 27173/37673 cut-off events. [2024-11-16 19:12:41,423 INFO L125 PetriNetUnfolderBase]: For 49762/49762 co-relation queries the response was YES. [2024-11-16 19:12:41,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113725 conditions, 37673 events. 27173/37673 cut-off events. For 49762/49762 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 223497 event pairs, 3079 based on Foata normal form. 1452/39092 useless extension candidates. Maximal degree in co-relation 113699. Up to 12380 conditions per place. [2024-11-16 19:12:42,036 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 149 selfloop transitions, 14 changer transitions 6/174 dead transitions. [2024-11-16 19:12:42,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 174 transitions, 1100 flow [2024-11-16 19:12:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:12:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:12:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-16 19:12:42,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2024-11-16 19:12:42,038 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 281 flow. Second operand 6 states and 199 transitions. [2024-11-16 19:12:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 174 transitions, 1100 flow [2024-11-16 19:12:42,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 174 transitions, 1087 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-16 19:12:42,103 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 339 flow [2024-11-16 19:12:42,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-11-16 19:12:42,104 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-11-16 19:12:42,104 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 339 flow [2024-11-16 19:12:42,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:42,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:42,105 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] [2024-11-16 19:12:42,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:12:42,105 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:42,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash -667447884, now seen corresponding path program 1 times [2024-11-16 19:12:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:42,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098843231] [2024-11-16 19:12:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:42,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:42,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098843231] [2024-11-16 19:12:42,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098843231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:42,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:42,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:12:42,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595119136] [2024-11-16 19:12:42,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:42,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:12:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:12:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:12:42,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:42,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:42,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:42,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:42,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:45,672 INFO L124 PetriNetUnfolderBase]: 29867/41271 cut-off events. [2024-11-16 19:12:45,672 INFO L125 PetriNetUnfolderBase]: For 66717/66717 co-relation queries the response was YES. [2024-11-16 19:12:45,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135541 conditions, 41271 events. 29867/41271 cut-off events. For 66717/66717 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 243239 event pairs, 5493 based on Foata normal form. 144/41395 useless extension candidates. Maximal degree in co-relation 135527. Up to 18806 conditions per place. [2024-11-16 19:12:45,883 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 107 selfloop transitions, 2 changer transitions 76/190 dead transitions. [2024-11-16 19:12:45,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 190 transitions, 1370 flow [2024-11-16 19:12:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:12:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:12:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-11-16 19:12:45,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-16 19:12:45,885 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 339 flow. Second operand 6 states and 183 transitions. [2024-11-16 19:12:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 190 transitions, 1370 flow [2024-11-16 19:12:46,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 190 transitions, 1254 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-16 19:12:46,329 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 321 flow [2024-11-16 19:12:46,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-16 19:12:46,330 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-16 19:12:46,330 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 321 flow [2024-11-16 19:12:46,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:46,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:46,331 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] [2024-11-16 19:12:46,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:12:46,331 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:46,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash -412965734, now seen corresponding path program 2 times [2024-11-16 19:12:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611135928] [2024-11-16 19:12:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:46,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:46,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611135928] [2024-11-16 19:12:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611135928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:12:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107301499] [2024-11-16 19:12:46,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:46,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:12:46,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:12:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:12:46,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:46,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:46,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:46,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:46,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand