./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:25:57,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:25:57,945 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:25:57,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:25:57,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:25:57,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:25:57,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:25:57,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:25:57,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:25:57,977 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:25:57,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:25:57,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:25:57,978 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:25:57,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:25:57,978 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:25:57,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:25:57,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:25:57,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:25:57,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:25:57,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:25:57,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:25:57,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:25:57,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:25:57,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:25:57,987 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:25:57,988 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:25:57,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:25:57,989 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:25:57,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:25:57,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:25:57,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:25:57,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:25:57,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:25:57,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:25:57,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:25:57,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:25:57,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:25:57,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:25:57,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:25:57,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:25:57,992 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:25:57,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:25:57,993 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:25:57,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2024-06-27 17:25:58,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:25:58,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:25:58,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:25:58,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:25:58,218 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:25:58,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-06-27 17:25:59,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:25:59,479 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:25:59,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-06-27 17:25:59,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/141df8222/f59954336cf24b08950fd2d5e3aa7f35/FLAGf2855967c [2024-06-27 17:25:59,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/141df8222/f59954336cf24b08950fd2d5e3aa7f35 [2024-06-27 17:25:59,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:25:59,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:25:59,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:25:59,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:25:59,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:25:59,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:25:59" (1/1) ... [2024-06-27 17:25:59,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b6bc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:25:59, skipping insertion in model container [2024-06-27 17:25:59,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:25:59" (1/1) ... [2024-06-27 17:25:59,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:25:59,684 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i[944,957] [2024-06-27 17:25:59,870 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:25:59,882 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:25:59,896 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i[944,957] [2024-06-27 17:25:59,958 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:26:00,018 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:26:00,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00 WrapperNode [2024-06-27 17:26:00,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:26:00,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:26:00,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:26:00,021 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:26:00,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,096 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2024-06-27 17:26:00,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:26:00,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:26:00,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:26:00,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:26:00,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,143 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]. [2024-06-27 17:26:00,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:26:00,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:26:00,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:26:00,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:26:00,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (1/1) ... [2024-06-27 17:26:00,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:26:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:26:00,207 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) [2024-06-27 17:26:00,226 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 [2024-06-27 17:26:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:26:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:26:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:26:00,249 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:26:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:26:00,249 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:26:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 17:26:00,250 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 17:26:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 17:26:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 17:26:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:26:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:26:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:26:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:26:00,254 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:26:00,372 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:26:00,374 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:26:00,647 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:26:00,647 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:26:00,802 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:26:00,802 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:26:00,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:26:00 BoogieIcfgContainer [2024-06-27 17:26:00,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:26:00,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:26:00,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:26:00,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:26:00,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:25:59" (1/3) ... [2024-06-27 17:26:00,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bab899f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:26:00, skipping insertion in model container [2024-06-27 17:26:00,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:00" (2/3) ... [2024-06-27 17:26:00,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bab899f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:26:00, skipping insertion in model container [2024-06-27 17:26:00,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:26:00" (3/3) ... [2024-06-27 17:26:00,811 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2024-06-27 17:26:00,819 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:26:00,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:26:00,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 17:26:00,827 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:26:00,875 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:26:00,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-06-27 17:26:00,928 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 17:26:00,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:26:00,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-06-27 17:26:00,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-06-27 17:26:00,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-06-27 17:26:00,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:26:00,953 INFO L357 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, mHoare=true, 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;@356c0a73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:26:00,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 17:26:00,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:26:00,966 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-06-27 17:26:00,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:26:00,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:00,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:00,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:00,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1251635780, now seen corresponding path program 1 times [2024-06-27 17:26:00,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:00,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713743964] [2024-06-27 17:26:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:00,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713743964] [2024-06-27 17:26:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713743964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:01,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:01,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:26:01,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411358479] [2024-06-27 17:26:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:01,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:26:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:26:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:26:01,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-27 17:26:01,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-06-27 17:26:01,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:01,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-27 17:26:01,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:01,645 INFO L124 PetriNetUnfolderBase]: 879/1523 cut-off events. [2024-06-27 17:26:01,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:26:01,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 1523 events. 879/1523 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10475 event pairs, 159 based on Foata normal form. 60/1543 useless extension candidates. Maximal degree in co-relation 2831. Up to 1009 conditions per place. [2024-06-27 17:26:01,659 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 26 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2024-06-27 17:26:01,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 176 flow [2024-06-27 17:26:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:26:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:26:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-06-27 17:26:01,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2024-06-27 17:26:01,670 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 111 transitions. [2024-06-27 17:26:01,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 176 flow [2024-06-27 17:26:01,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:26:01,681 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-06-27 17:26:01,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-27 17:26:01,687 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-06-27 17:26:01,688 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-06-27 17:26:01,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-06-27 17:26:01,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:01,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:01,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:26:01,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:01,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1771103079, now seen corresponding path program 1 times [2024-06-27 17:26:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:01,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063637322] [2024-06-27 17:26:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:01,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:01,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063637322] [2024-06-27 17:26:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063637322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:01,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:26:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850510524] [2024-06-27 17:26:01,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:01,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:01,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:01,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-06-27 17:26:01,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:26:01,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:01,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-06-27 17:26:01,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:04,182 INFO L124 PetriNetUnfolderBase]: 15819/23731 cut-off events. [2024-06-27 17:26:04,183 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2024-06-27 17:26:04,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46421 conditions, 23731 events. 15819/23731 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 180560 event pairs, 3634 based on Foata normal form. 0/23023 useless extension candidates. Maximal degree in co-relation 46411. Up to 8109 conditions per place. [2024-06-27 17:26:04,435 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 41 selfloop transitions, 8 changer transitions 85/148 dead transitions. [2024-06-27 17:26:04,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 594 flow [2024-06-27 17:26:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:26:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:26:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2024-06-27 17:26:04,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6757369614512472 [2024-06-27 17:26:04,443 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 298 transitions. [2024-06-27 17:26:04,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 594 flow [2024-06-27 17:26:04,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:26:04,458 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 202 flow [2024-06-27 17:26:04,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2024-06-27 17:26:04,460 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-27 17:26:04,460 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 202 flow [2024-06-27 17:26:04,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:26:04,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:04,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:04,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:26:04,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:04,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:04,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1492082494, now seen corresponding path program 1 times [2024-06-27 17:26:04,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:04,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658630941] [2024-06-27 17:26:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:04,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:04,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658630941] [2024-06-27 17:26:04,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658630941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:04,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:04,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668417670] [2024-06-27 17:26:04,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:04,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:04,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:04,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:04,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-06-27 17:26:04,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-06-27 17:26:04,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:04,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-06-27 17:26:04,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:06,533 INFO L124 PetriNetUnfolderBase]: 11755/19065 cut-off events. [2024-06-27 17:26:06,533 INFO L125 PetriNetUnfolderBase]: For 29176/29176 co-relation queries the response was YES. [2024-06-27 17:26:06,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58157 conditions, 19065 events. 11755/19065 cut-off events. For 29176/29176 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 154337 event pairs, 1052 based on Foata normal form. 476/19423 useless extension candidates. Maximal degree in co-relation 58139. Up to 7211 conditions per place. [2024-06-27 17:26:06,851 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 58 selfloop transitions, 12 changer transitions 86/170 dead transitions. [2024-06-27 17:26:06,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 170 transitions, 1154 flow [2024-06-27 17:26:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:26:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:26:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2024-06-27 17:26:06,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6591836734693878 [2024-06-27 17:26:06,853 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 202 flow. Second operand 10 states and 323 transitions. [2024-06-27 17:26:06,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 170 transitions, 1154 flow [2024-06-27 17:26:06,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 170 transitions, 1000 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 17:26:06,914 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 310 flow [2024-06-27 17:26:06,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2024-06-27 17:26:06,915 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-06-27 17:26:06,916 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 310 flow [2024-06-27 17:26:06,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-06-27 17:26:06,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:06,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:06,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:26:06,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:06,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash -307198118, now seen corresponding path program 1 times [2024-06-27 17:26:06,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23374480] [2024-06-27 17:26:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:07,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:07,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23374480] [2024-06-27 17:26:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23374480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:07,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393290486] [2024-06-27 17:26:07,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:07,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:07,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:07,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-06-27 17:26:07,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-06-27 17:26:07,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:07,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-06-27 17:26:07,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:08,621 INFO L124 PetriNetUnfolderBase]: 10758/17053 cut-off events. [2024-06-27 17:26:08,622 INFO L125 PetriNetUnfolderBase]: For 49579/49579 co-relation queries the response was YES. [2024-06-27 17:26:08,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58195 conditions, 17053 events. 10758/17053 cut-off events. For 49579/49579 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 130295 event pairs, 2005 based on Foata normal form. 380/17324 useless extension candidates. Maximal degree in co-relation 58170. Up to 7010 conditions per place. [2024-06-27 17:26:08,766 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 62 selfloop transitions, 19 changer transitions 70/165 dead transitions. [2024-06-27 17:26:08,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 165 transitions, 1186 flow [2024-06-27 17:26:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:26:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:26:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2024-06-27 17:26:08,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551020408163265 [2024-06-27 17:26:08,768 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 310 flow. Second operand 10 states and 321 transitions. [2024-06-27 17:26:08,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 165 transitions, 1186 flow [2024-06-27 17:26:08,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 165 transitions, 1158 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-06-27 17:26:08,912 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 450 flow [2024-06-27 17:26:08,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-06-27 17:26:08,913 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-06-27 17:26:08,914 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 450 flow [2024-06-27 17:26:08,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-06-27 17:26:08,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:08,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:08,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:26:08,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:08,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1543611715, now seen corresponding path program 1 times [2024-06-27 17:26:08,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:08,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060995674] [2024-06-27 17:26:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:08,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:09,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:09,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060995674] [2024-06-27 17:26:09,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060995674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:09,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:09,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862247593] [2024-06-27 17:26:09,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:09,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:09,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-06-27 17:26:09,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:26:09,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:09,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-06-27 17:26:09,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:10,774 INFO L124 PetriNetUnfolderBase]: 9634/15496 cut-off events. [2024-06-27 17:26:10,774 INFO L125 PetriNetUnfolderBase]: For 68535/68535 co-relation queries the response was YES. [2024-06-27 17:26:10,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58579 conditions, 15496 events. 9634/15496 cut-off events. For 68535/68535 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 120251 event pairs, 1738 based on Foata normal form. 342/15735 useless extension candidates. Maximal degree in co-relation 58544. Up to 5064 conditions per place. [2024-06-27 17:26:10,934 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 64 selfloop transitions, 18 changer transitions 68/164 dead transitions. [2024-06-27 17:26:10,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 164 transitions, 1500 flow [2024-06-27 17:26:10,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:26:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:26:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-06-27 17:26:10,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061224489795919 [2024-06-27 17:26:10,937 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 450 flow. Second operand 10 states and 297 transitions. [2024-06-27 17:26:10,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 164 transitions, 1500 flow [2024-06-27 17:26:11,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 164 transitions, 1394 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-27 17:26:11,455 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 627 flow [2024-06-27 17:26:11,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=627, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-27 17:26:11,456 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-06-27 17:26:11,456 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 627 flow [2024-06-27 17:26:11,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-06-27 17:26:11,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:11,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:11,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:26:11,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:11,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:11,459 INFO L85 PathProgramCache]: Analyzing trace with hash 909119949, now seen corresponding path program 1 times [2024-06-27 17:26:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:11,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366682711] [2024-06-27 17:26:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:11,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:11,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:11,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366682711] [2024-06-27 17:26:11,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366682711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:11,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:11,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262265895] [2024-06-27 17:26:11,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:11,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:11,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:11,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-27 17:26:11,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-06-27 17:26:11,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:11,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-27 17:26:11,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:13,315 INFO L124 PetriNetUnfolderBase]: 8865/15282 cut-off events. [2024-06-27 17:26:13,315 INFO L125 PetriNetUnfolderBase]: For 68880/70066 co-relation queries the response was YES. [2024-06-27 17:26:13,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55231 conditions, 15282 events. 8865/15282 cut-off events. For 68880/70066 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 132375 event pairs, 3348 based on Foata normal form. 393/14940 useless extension candidates. Maximal degree in co-relation 55195. Up to 5791 conditions per place. [2024-06-27 17:26:13,455 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 49 selfloop transitions, 8 changer transitions 38/128 dead transitions. [2024-06-27 17:26:13,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 128 transitions, 1170 flow [2024-06-27 17:26:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:26:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:26:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-06-27 17:26:13,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641399416909621 [2024-06-27 17:26:13,456 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 627 flow. Second operand 7 states and 220 transitions. [2024-06-27 17:26:13,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 128 transitions, 1170 flow [2024-06-27 17:26:13,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 1117 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 17:26:13,691 INFO L231 Difference]: Finished difference. Result has 89 places, 72 transitions, 621 flow [2024-06-27 17:26:13,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2024-06-27 17:26:13,693 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-27 17:26:13,693 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 621 flow [2024-06-27 17:26:13,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-06-27 17:26:13,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:13,694 INFO L208 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] [2024-06-27 17:26:13,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:26:13,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:13,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash -297703484, now seen corresponding path program 1 times [2024-06-27 17:26:13,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:13,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606933992] [2024-06-27 17:26:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:13,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:13,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:13,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606933992] [2024-06-27 17:26:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606933992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:13,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:13,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:26:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069590032] [2024-06-27 17:26:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:26:13,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:26:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:26:13,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-27 17:26:13,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 621 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2024-06-27 17:26:13,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:13,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-27 17:26:13,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:16,763 INFO L124 PetriNetUnfolderBase]: 24439/37023 cut-off events. [2024-06-27 17:26:16,764 INFO L125 PetriNetUnfolderBase]: For 90297/94536 co-relation queries the response was YES. [2024-06-27 17:26:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108049 conditions, 37023 events. 24439/37023 cut-off events. For 90297/94536 co-relation queries the response was YES. Maximal size of possible extension queue 1930. Compared 289510 event pairs, 4215 based on Foata normal form. 2217/38060 useless extension candidates. Maximal degree in co-relation 108010. Up to 19236 conditions per place. [2024-06-27 17:26:17,248 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 60 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-06-27 17:26:17,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 961 flow [2024-06-27 17:26:17,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:26:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:26:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-27 17:26:17,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-06-27 17:26:17,249 INFO L175 Difference]: Start difference. First operand has 89 places, 72 transitions, 621 flow. Second operand 4 states and 139 transitions. [2024-06-27 17:26:17,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 961 flow [2024-06-27 17:26:17,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 921 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 17:26:17,465 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 635 flow [2024-06-27 17:26:17,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=635, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-06-27 17:26:17,466 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-06-27 17:26:17,466 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 635 flow [2024-06-27 17:26:17,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2024-06-27 17:26:17,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:17,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:17,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:26:17,467 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:17,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1547442551, now seen corresponding path program 1 times [2024-06-27 17:26:17,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:17,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705864476] [2024-06-27 17:26:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:17,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705864476] [2024-06-27 17:26:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705864476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:17,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:17,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698462761] [2024-06-27 17:26:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:17,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:17,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:17,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-27 17:26:17,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 635 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-06-27 17:26:17,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:17,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-27 17:26:17,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:21,251 INFO L124 PetriNetUnfolderBase]: 24587/40884 cut-off events. [2024-06-27 17:26:21,251 INFO L125 PetriNetUnfolderBase]: For 98424/101087 co-relation queries the response was YES. [2024-06-27 17:26:22,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126836 conditions, 40884 events. 24587/40884 cut-off events. For 98424/101087 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 377251 event pairs, 11849 based on Foata normal form. 1498/37780 useless extension candidates. Maximal degree in co-relation 126803. Up to 15735 conditions per place. [2024-06-27 17:26:22,506 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 74 selfloop transitions, 19 changer transitions 4/131 dead transitions. [2024-06-27 17:26:22,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 131 transitions, 1111 flow [2024-06-27 17:26:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:26:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:26:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-27 17:26:22,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6472303206997084 [2024-06-27 17:26:22,508 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 635 flow. Second operand 7 states and 222 transitions. [2024-06-27 17:26:22,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 131 transitions, 1111 flow [2024-06-27 17:26:22,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 1099 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 17:26:22,649 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 745 flow [2024-06-27 17:26:22,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-06-27 17:26:22,649 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-27 17:26:22,649 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 745 flow [2024-06-27 17:26:22,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-06-27 17:26:22,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:22,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:22,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:26:22,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:22,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2080657961, now seen corresponding path program 1 times [2024-06-27 17:26:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:22,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800136897] [2024-06-27 17:26:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:22,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:22,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800136897] [2024-06-27 17:26:22,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800136897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:22,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:22,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:26:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226906692] [2024-06-27 17:26:22,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:22,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:22,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-27 17:26:22,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 745 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-06-27 17:26:22,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:22,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-27 17:26:22,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:27,837 INFO L124 PetriNetUnfolderBase]: 33406/50311 cut-off events. [2024-06-27 17:26:27,837 INFO L125 PetriNetUnfolderBase]: For 101687/107064 co-relation queries the response was YES. [2024-06-27 17:26:28,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155594 conditions, 50311 events. 33406/50311 cut-off events. For 101687/107064 co-relation queries the response was YES. Maximal size of possible extension queue 2594. Compared 399053 event pairs, 3388 based on Foata normal form. 3191/52239 useless extension candidates. Maximal degree in co-relation 155557. Up to 20920 conditions per place. [2024-06-27 17:26:28,200 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 74 selfloop transitions, 10 changer transitions 5/133 dead transitions. [2024-06-27 17:26:28,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 133 transitions, 1214 flow [2024-06-27 17:26:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:26:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:26:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-06-27 17:26:28,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.726530612244898 [2024-06-27 17:26:28,201 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 745 flow. Second operand 5 states and 178 transitions. [2024-06-27 17:26:28,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 133 transitions, 1214 flow [2024-06-27 17:26:28,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 133 transitions, 1188 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 17:26:28,524 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 758 flow [2024-06-27 17:26:28,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=758, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-06-27 17:26:28,524 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-06-27 17:26:28,525 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 758 flow [2024-06-27 17:26:28,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-06-27 17:26:28,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:28,525 INFO L208 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] [2024-06-27 17:26:28,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 17:26:28,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:28,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1912989346, now seen corresponding path program 1 times [2024-06-27 17:26:28,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:28,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185548871] [2024-06-27 17:26:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:28,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:28,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:28,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185548871] [2024-06-27 17:26:28,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185548871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:28,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:28,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:28,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061459423] [2024-06-27 17:26:28,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:28,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:28,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-27 17:26:28,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 758 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-06-27 17:26:28,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:28,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-27 17:26:28,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:32,530 INFO L124 PetriNetUnfolderBase]: 26458/39831 cut-off events. [2024-06-27 17:26:32,530 INFO L125 PetriNetUnfolderBase]: For 101034/107518 co-relation queries the response was YES. [2024-06-27 17:26:32,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138431 conditions, 39831 events. 26458/39831 cut-off events. For 101034/107518 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 307156 event pairs, 1384 based on Foata normal form. 2538/41380 useless extension candidates. Maximal degree in co-relation 138391. Up to 12992 conditions per place. [2024-06-27 17:26:32,821 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 84 selfloop transitions, 14 changer transitions 5/147 dead transitions. [2024-06-27 17:26:32,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 147 transitions, 1331 flow [2024-06-27 17:26:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:26:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:26:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-06-27 17:26:32,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7312925170068028 [2024-06-27 17:26:32,823 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 758 flow. Second operand 6 states and 215 transitions. [2024-06-27 17:26:32,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 147 transitions, 1331 flow [2024-06-27 17:26:32,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1307 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 17:26:32,903 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 820 flow [2024-06-27 17:26:32,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=820, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2024-06-27 17:26:32,904 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-27 17:26:32,904 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 820 flow [2024-06-27 17:26:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-06-27 17:26:32,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:32,905 INFO L208 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] [2024-06-27 17:26:32,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 17:26:32,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:32,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:32,906 INFO L85 PathProgramCache]: Analyzing trace with hash 425682889, now seen corresponding path program 1 times [2024-06-27 17:26:32,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:32,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133921467] [2024-06-27 17:26:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:32,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:33,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133921467] [2024-06-27 17:26:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133921467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:33,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:26:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007837066] [2024-06-27 17:26:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:26:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:26:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:26:33,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-27 17:26:33,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 820 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2024-06-27 17:26:33,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:33,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-27 17:26:33,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:36,755 INFO L124 PetriNetUnfolderBase]: 23622/35427 cut-off events. [2024-06-27 17:26:36,755 INFO L125 PetriNetUnfolderBase]: For 129009/135599 co-relation queries the response was YES. [2024-06-27 17:26:36,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135066 conditions, 35427 events. 23622/35427 cut-off events. For 129009/135599 co-relation queries the response was YES. Maximal size of possible extension queue 2115. Compared 271398 event pairs, 1312 based on Foata normal form. 1687/36157 useless extension candidates. Maximal degree in co-relation 135026. Up to 12992 conditions per place. [2024-06-27 17:26:37,001 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 73 selfloop transitions, 18 changer transitions 11/142 dead transitions. [2024-06-27 17:26:37,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 142 transitions, 1285 flow [2024-06-27 17:26:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:26:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:26:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-06-27 17:26:37,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6822157434402333 [2024-06-27 17:26:37,003 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 820 flow. Second operand 7 states and 234 transitions. [2024-06-27 17:26:37,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 142 transitions, 1285 flow [2024-06-27 17:26:37,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 1217 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 17:26:37,447 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 741 flow [2024-06-27 17:26:37,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=741, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-27 17:26:37,448 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-27 17:26:37,448 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 741 flow [2024-06-27 17:26:37,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2024-06-27 17:26:37,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:37,448 INFO L208 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, 1] [2024-06-27 17:26:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 17:26:37,449 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:37,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1884130681, now seen corresponding path program 1 times [2024-06-27 17:26:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:37,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381035903] [2024-06-27 17:26:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381035903] [2024-06-27 17:26:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381035903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:37,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:37,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:26:37,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66468277] [2024-06-27 17:26:37,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:37,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:37,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-27 17:26:37,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 741 flow. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 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) [2024-06-27 17:26:37,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:37,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-27 17:26:37,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand