./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe016_power.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 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:18:21,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:18:22,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:18:22,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:18:22,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:18:22,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:18:22,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:18:22,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:18:22,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:18:22,078 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:18:22,078 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:18:22,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:18:22,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:18:22,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:18:22,079 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:18:22,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:18:22,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:18:22,080 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:18:22,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:18:22,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:18:22,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:18:22,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:18:22,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:18:22,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:18:22,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:18:22,088 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:18:22,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:18:22,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:18:22,089 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:18:22,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:18:22,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:18:22,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:18:22,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:18:22,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:18:22,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:18:22,090 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:18:22,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:18:22,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:18:22,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:18:22,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:18:22,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:18:22,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:18:22,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2024-11-10 10:18:22,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:18:22,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:18:22,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:18:22,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:18:22,431 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:18:22,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2024-11-10 10:18:23,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:18:24,228 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:18:24,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2024-11-10 10:18:24,247 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51ec192b/db8fd8c2f0cd4003850516e5181264ac/FLAGa27bab46f [2024-11-10 10:18:24,263 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51ec192b/db8fd8c2f0cd4003850516e5181264ac [2024-11-10 10:18:24,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:18:24,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:18:24,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:18:24,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:18:24,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:18:24,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:24" (1/1) ... [2024-11-10 10:18:24,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627582b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:24, skipping insertion in model container [2024-11-10 10:18:24,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:24" (1/1) ... [2024-11-10 10:18:24,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:18:24,578 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2024-11-10 10:18:24,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:18:24,865 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:18:24,879 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2024-11-10 10:18:24,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:18:25,011 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:18:25,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25 WrapperNode [2024-11-10 10:18:25,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:18:25,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:18:25,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:18:25,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:18:25,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,084 INFO L138 Inliner]: procedures = 176, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 170 [2024-11-10 10:18:25,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:18:25,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:18:25,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:18:25,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:18:25,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,133 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-11-10 10:18:25,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,156 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:18:25,168 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:18:25,168 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:18:25,168 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:18:25,169 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (1/1) ... [2024-11-10 10:18:25,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:18:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:18:25,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:18:25,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:18:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:18:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:18:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:18:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:18:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:18:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:18:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 10:18:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 10:18:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 10:18:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 10:18:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-10 10:18:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-10 10:18:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-10 10:18:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-10 10:18:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:18:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:18:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:18:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:18:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:18:25,329 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:18:25,480 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:18:25,482 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:18:25,974 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:18:25,974 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:18:26,437 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:18:26,438 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:18:26,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:26 BoogieIcfgContainer [2024-11-10 10:18:26,439 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:18:26,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:18:26,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:18:26,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:18:26,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:18:24" (1/3) ... [2024-11-10 10:18:26,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e912c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:26, skipping insertion in model container [2024-11-10 10:18:26,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:25" (2/3) ... [2024-11-10 10:18:26,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e912c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:26, skipping insertion in model container [2024-11-10 10:18:26,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:26" (3/3) ... [2024-11-10 10:18:26,449 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2024-11-10 10:18:26,466 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:18:26,466 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:18:26,466 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:18:26,556 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:18:26,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:18:26,638 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-11-10 10:18:26,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:18:26,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-10 10:18:26,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:18:26,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-11-10 10:18:26,656 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:18:26,663 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b2846ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:18:26,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:18:26,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:18:26,695 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-11-10 10:18:26,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:18:26,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:26,697 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:26,697 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:18:26,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1990074452, now seen corresponding path program 1 times [2024-11-10 10:18:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:26,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961252546] [2024-11-10 10:18:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:18:27,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961252546] [2024-11-10 10:18:27,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961252546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:27,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:27,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:18:27,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105191500] [2024-11-10 10:18:27,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:27,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:18:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:18:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:18:27,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:27,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:27,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:27,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:27,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:33,748 INFO L124 PetriNetUnfolderBase]: 27202/36947 cut-off events. [2024-11-10 10:18:33,748 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-10 10:18:33,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73572 conditions, 36947 events. 27202/36947 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 221965 event pairs, 3582 based on Foata normal form. 900/37832 useless extension candidates. Maximal degree in co-relation 73560. Up to 26651 conditions per place. [2024-11-10 10:18:34,039 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 54 selfloop transitions, 2 changer transitions 65/126 dead transitions. [2024-11-10 10:18:34,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 126 transitions, 515 flow [2024-11-10 10:18:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:18:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:18:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-10 10:18:34,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-11-10 10:18:34,057 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 186 transitions. [2024-11-10 10:18:34,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 126 transitions, 515 flow [2024-11-10 10:18:34,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 126 transitions, 508 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:18:34,074 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 100 flow [2024-11-10 10:18:34,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2024-11-10 10:18:34,082 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-11-10 10:18:34,082 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 100 flow [2024-11-10 10:18:34,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:34,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:34,083 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:34,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:18:34,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:18:34,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -139300883, now seen corresponding path program 1 times [2024-11-10 10:18:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:34,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531219160] [2024-11-10 10:18:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:18:34,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:34,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531219160] [2024-11-10 10:18:34,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531219160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:34,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:18:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824459603] [2024-11-10 10:18:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:34,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:18:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:18:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:18:34,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:34,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:34,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:34,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:34,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:41,215 INFO L124 PetriNetUnfolderBase]: 37377/50369 cut-off events. [2024-11-10 10:18:41,215 INFO L125 PetriNetUnfolderBase]: For 4982/4982 co-relation queries the response was YES. [2024-11-10 10:18:41,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108016 conditions, 50369 events. 37377/50369 cut-off events. For 4982/4982 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 295526 event pairs, 4425 based on Foata normal form. 750/51052 useless extension candidates. Maximal degree in co-relation 108001. Up to 24271 conditions per place. [2024-11-10 10:18:41,543 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 61 selfloop transitions, 4 changer transitions 69/139 dead transitions. [2024-11-10 10:18:41,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 139 transitions, 589 flow [2024-11-10 10:18:41,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:18:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:18:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-11-10 10:18:41,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-10 10:18:41,547 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 100 flow. Second operand 8 states and 208 transitions. [2024-11-10 10:18:41,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 139 transitions, 589 flow [2024-11-10 10:18:42,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 139 transitions, 567 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-10 10:18:42,596 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 130 flow [2024-11-10 10:18:42,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-11-10 10:18:42,597 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-11-10 10:18:42,597 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 130 flow [2024-11-10 10:18:42,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:42,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:42,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:42,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:18:42,599 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:18:42,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1244723816, now seen corresponding path program 1 times [2024-11-10 10:18:42,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063385082] [2024-11-10 10:18:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:18:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063385082] [2024-11-10 10:18:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063385082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:43,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:18:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631231894] [2024-11-10 10:18:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:43,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:18:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:43,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:18:43,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:18:43,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:43,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:43,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:43,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:43,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:47,119 INFO L124 PetriNetUnfolderBase]: 22567/30698 cut-off events. [2024-11-10 10:18:47,119 INFO L125 PetriNetUnfolderBase]: For 18041/18041 co-relation queries the response was YES. [2024-11-10 10:18:47,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75163 conditions, 30698 events. 22567/30698 cut-off events. For 18041/18041 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 170828 event pairs, 9457 based on Foata normal form. 600/31292 useless extension candidates. Maximal degree in co-relation 75146. Up to 23556 conditions per place. [2024-11-10 10:18:47,263 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 52 selfloop transitions, 2 changer transitions 57/116 dead transitions. [2024-11-10 10:18:47,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 116 transitions, 540 flow [2024-11-10 10:18:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:18:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:18:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-11-10 10:18:47,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-11-10 10:18:47,265 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 130 flow. Second operand 7 states and 174 transitions. [2024-11-10 10:18:47,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 116 transitions, 540 flow [2024-11-10 10:18:47,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 116 transitions, 520 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-10 10:18:47,400 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 135 flow [2024-11-10 10:18:47,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2024-11-10 10:18:47,401 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-11-10 10:18:47,401 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 135 flow [2024-11-10 10:18:47,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:47,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:47,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:47,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:18:47,402 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:18:47,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1627763283, now seen corresponding path program 1 times [2024-11-10 10:18:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:47,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333052311] [2024-11-10 10:18:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:18:47,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:47,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333052311] [2024-11-10 10:18:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333052311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:47,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:18:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807849535] [2024-11-10 10:18:47,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:47,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:18:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:18:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:18:47,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:47,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:47,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:47,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:47,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:55,621 INFO L124 PetriNetUnfolderBase]: 48312/65047 cut-off events. [2024-11-10 10:18:55,621 INFO L125 PetriNetUnfolderBase]: For 35199/35212 co-relation queries the response was YES. [2024-11-10 10:18:55,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152250 conditions, 65047 events. 48312/65047 cut-off events. For 35199/35212 co-relation queries the response was YES. Maximal size of possible extension queue 2059. Compared 393667 event pairs, 12225 based on Foata normal form. 1308/66344 useless extension candidates. Maximal degree in co-relation 152230. Up to 20109 conditions per place. [2024-11-10 10:18:56,027 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 54 selfloop transitions, 3 changer transitions 132/194 dead transitions. [2024-11-10 10:18:56,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 194 transitions, 893 flow [2024-11-10 10:18:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:18:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:18:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-11-10 10:18:56,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2024-11-10 10:18:56,030 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 135 flow. Second operand 11 states and 290 transitions. [2024-11-10 10:18:56,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 194 transitions, 893 flow [2024-11-10 10:18:57,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 194 transitions, 853 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-10 10:18:57,647 INFO L231 Difference]: Finished difference. Result has 73 places, 40 transitions, 150 flow [2024-11-10 10:18:57,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=150, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2024-11-10 10:18:57,648 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2024-11-10 10:18:57,648 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 150 flow [2024-11-10 10:18:57,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:57,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:57,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:57,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:18:57,649 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:18:57,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash -386896413, now seen corresponding path program 1 times [2024-11-10 10:18:57,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:57,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947445959] [2024-11-10 10:18:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:57,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:18:59,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947445959] [2024-11-10 10:18:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947445959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:59,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:59,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:18:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549272577] [2024-11-10 10:18:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:59,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:18:59,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:18:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:18:59,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:59,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 40 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:59,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:59,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:03,716 INFO L124 PetriNetUnfolderBase]: 30402/41886 cut-off events. [2024-11-10 10:19:03,716 INFO L125 PetriNetUnfolderBase]: For 53466/53469 co-relation queries the response was YES. [2024-11-10 10:19:03,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103299 conditions, 41886 events. 30402/41886 cut-off events. For 53466/53469 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 250345 event pairs, 7992 based on Foata normal form. 900/42784 useless extension candidates. Maximal degree in co-relation 103275. Up to 33301 conditions per place. [2024-11-10 10:19:04,022 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 53 selfloop transitions, 3 changer transitions 52/113 dead transitions. [2024-11-10 10:19:04,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 113 transitions, 610 flow [2024-11-10 10:19:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-11-10 10:19:04,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5365079365079365 [2024-11-10 10:19:04,025 INFO L175 Difference]: Start difference. First operand has 73 places, 40 transitions, 150 flow. Second operand 7 states and 169 transitions. [2024-11-10 10:19:04,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 113 transitions, 610 flow [2024-11-10 10:19:04,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 560 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-11-10 10:19:04,440 INFO L231 Difference]: Finished difference. Result has 67 places, 42 transitions, 162 flow [2024-11-10 10:19:04,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=67, PETRI_TRANSITIONS=42} [2024-11-10 10:19:04,441 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-11-10 10:19:04,442 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 42 transitions, 162 flow [2024-11-10 10:19:04,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:04,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:04,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:04,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:19:04,444 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:19:04,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:04,446 INFO L85 PathProgramCache]: Analyzing trace with hash 114144243, now seen corresponding path program 1 times [2024-11-10 10:19:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173254075] [2024-11-10 10:19:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:05,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:05,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173254075] [2024-11-10 10:19:05,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173254075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:05,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:05,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:19:05,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019020446] [2024-11-10 10:19:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:05,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:05,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:05,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 42 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:05,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:05,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:05,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand