./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:45:52,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:45:52,827 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:45:52,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:45:52,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:45:52,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:45:52,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:45:52,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:45:52,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:45:52,846 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:45:52,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:45:52,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:45:52,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:45:52,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:45:52,848 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:45:52,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:45:52,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:45:52,848 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:45:52,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:45:52,849 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:45:52,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:45:52,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:45:52,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:45:52,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:45:52,850 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:45:52,851 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:45:52,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:45:52,851 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:45:52,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:45:52,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:45:52,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:45:52,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:45:52,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:52,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:45:52,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:45:52,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:45:52,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:45:52,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:45:52,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:45:52,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:45:52,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:45:52,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:45:52,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-11-22 13:45:53,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:45:53,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:45:53,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:45:53,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:45:53,030 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:45:53,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-11-22 13:45:54,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:45:54,495 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:45:54,496 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-11-22 13:45:54,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40679203f/9242d4bb59b547b09fccdd88227eff39/FLAGcd24b1f5e [2024-11-22 13:45:54,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40679203f/9242d4bb59b547b09fccdd88227eff39 [2024-11-22 13:45:54,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:45:54,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:45:54,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:54,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:45:54,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:45:54,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:54" (1/1) ... [2024-11-22 13:45:54,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e84bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:54, skipping insertion in model container [2024-11-22 13:45:54,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:45:54" (1/1) ... [2024-11-22 13:45:54,564 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:45:54,875 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/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-22 13:45:54,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:54,909 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:45:54,976 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/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-22 13:45:54,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:45:55,025 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:45:55,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55 WrapperNode [2024-11-22 13:45:55,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:45:55,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:55,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:45:55,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:45:55,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,089 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 165 [2024-11-22 13:45:55,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:45:55,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:45:55,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:45:55,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:45:55,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,142 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 13:45:55,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:45:55,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:45:55,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:45:55,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:45:55,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (1/1) ... [2024-11-22 13:45:55,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:45:55,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:45:55,211 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) [2024-11-22 13:45:55,214 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 [2024-11-22 13:45:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:45:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:45:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:45:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:45:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:45:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:45:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:45:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:45:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:45:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:45:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:45:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:45:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:45:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:45:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:45:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:45:55,255 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:45:55,392 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:45:55,395 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:45:55,694 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:45:55,694 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:45:55,970 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:45:55,971 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:45:55,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:55 BoogieIcfgContainer [2024-11-22 13:45:55,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:45:55,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:45:55,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:45:55,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:45:55,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:45:54" (1/3) ... [2024-11-22 13:45:55,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ec3bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:55, skipping insertion in model container [2024-11-22 13:45:55,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:45:55" (2/3) ... [2024-11-22 13:45:55,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ec3bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:45:55, skipping insertion in model container [2024-11-22 13:45:55,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:45:55" (3/3) ... [2024-11-22 13:45:55,981 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-11-22 13:45:55,995 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:45:55,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:45:55,996 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:45:56,051 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:45:56,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-22 13:45:56,117 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-22 13:45:56,117 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:45:56,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-22 13:45:56,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-22 13:45:56,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-22 13:45:56,136 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:45:56,143 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;@7879f06d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:45:56,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:45:56,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:45:56,155 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-22 13:45:56,155 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:45:56,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:56,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:56,156 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 1 more)] === [2024-11-22 13:45:56,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2139187037, now seen corresponding path program 1 times [2024-11-22 13:45:56,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:56,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205934469] [2024-11-22 13:45:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:45:56,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:45:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:56,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:56,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205934469] [2024-11-22 13:45:56,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205934469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:56,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:56,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031414780] [2024-11-22 13:45:56,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:56,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:56,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:56,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:45:56,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:56,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:56,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:57,435 INFO L124 PetriNetUnfolderBase]: 4194/5650 cut-off events. [2024-11-22 13:45:57,436 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2024-11-22 13:45:57,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11530 conditions, 5650 events. 4194/5650 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23579 event pairs, 1230 based on Foata normal form. 1/4162 useless extension candidates. Maximal degree in co-relation 10708. Up to 2621 conditions per place. [2024-11-22 13:45:57,465 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 93 selfloop transitions, 13 changer transitions 1/108 dead transitions. [2024-11-22 13:45:57,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 108 transitions, 475 flow [2024-11-22 13:45:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-22 13:45:57,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-22 13:45:57,479 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 5 states and 128 transitions. [2024-11-22 13:45:57,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 108 transitions, 475 flow [2024-11-22 13:45:57,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 108 transitions, 445 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:45:57,492 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 174 flow [2024-11-22 13:45:57,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2024-11-22 13:45:57,497 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-22 13:45:57,499 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 174 flow [2024-11-22 13:45:57,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:45:57,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:57,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:57,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:45:57,500 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 1 more)] === [2024-11-22 13:45:57,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash -251997727, now seen corresponding path program 2 times [2024-11-22 13:45:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:57,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983898709] [2024-11-22 13:45:57,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:45:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:57,527 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:45:57,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:57,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:57,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983898709] [2024-11-22 13:45:57,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983898709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:57,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:57,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:57,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961898052] [2024-11-22 13:45:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:57,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:57,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:57,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:45:57,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:57,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:57,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:58,518 INFO L124 PetriNetUnfolderBase]: 5362/7396 cut-off events. [2024-11-22 13:45:58,519 INFO L125 PetriNetUnfolderBase]: For 1555/1555 co-relation queries the response was YES. [2024-11-22 13:45:58,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 7396 events. 5362/7396 cut-off events. For 1555/1555 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 34845 event pairs, 2679 based on Foata normal form. 1/6215 useless extension candidates. Maximal degree in co-relation 11899. Up to 5325 conditions per place. [2024-11-22 13:45:58,558 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 107 selfloop transitions, 7 changer transitions 3/118 dead transitions. [2024-11-22 13:45:58,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 118 transitions, 596 flow [2024-11-22 13:45:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-22 13:45:58,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-11-22 13:45:58,562 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 174 flow. Second operand 5 states and 123 transitions. [2024-11-22 13:45:58,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 118 transitions, 596 flow [2024-11-22 13:45:58,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 118 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:45:58,576 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 239 flow [2024-11-22 13:45:58,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-11-22 13:45:58,577 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-11-22 13:45:58,577 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 239 flow [2024-11-22 13:45:58,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:45:58,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:58,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:58,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:45:58,578 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 1 more)] === [2024-11-22 13:45:58,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash -864762781, now seen corresponding path program 3 times [2024-11-22 13:45:58,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:58,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641458140] [2024-11-22 13:45:58,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:45:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:58,608 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:45:58,608 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641458140] [2024-11-22 13:45:58,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641458140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:58,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:58,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620770231] [2024-11-22 13:45:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:58,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:58,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:58,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:58,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:58,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:45:58,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:58,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:58,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:45:59,506 INFO L124 PetriNetUnfolderBase]: 6533/9128 cut-off events. [2024-11-22 13:45:59,507 INFO L125 PetriNetUnfolderBase]: For 4945/4945 co-relation queries the response was YES. [2024-11-22 13:45:59,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22776 conditions, 9128 events. 6533/9128 cut-off events. For 4945/4945 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44925 event pairs, 3289 based on Foata normal form. 1/7963 useless extension candidates. Maximal degree in co-relation 16270. Up to 5817 conditions per place. [2024-11-22 13:45:59,548 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 104 selfloop transitions, 17 changer transitions 1/123 dead transitions. [2024-11-22 13:45:59,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 685 flow [2024-11-22 13:45:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:45:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:45:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-22 13:45:59,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-22 13:45:59,553 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 239 flow. Second operand 5 states and 129 transitions. [2024-11-22 13:45:59,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 685 flow [2024-11-22 13:45:59,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 675 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:45:59,578 INFO L231 Difference]: Finished difference. Result has 57 places, 70 transitions, 377 flow [2024-11-22 13:45:59,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=57, PETRI_TRANSITIONS=70} [2024-11-22 13:45:59,579 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-11-22 13:45:59,579 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 70 transitions, 377 flow [2024-11-22 13:45:59,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:45:59,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:45:59,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:45:59,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:45:59,580 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 1 more)] === [2024-11-22 13:45:59,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:45:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 357230847, now seen corresponding path program 4 times [2024-11-22 13:45:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:45:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528652778] [2024-11-22 13:45:59,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:45:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:45:59,599 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:45:59,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:45:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:45:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:45:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528652778] [2024-11-22 13:45:59,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528652778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:45:59,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:45:59,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:45:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438800983] [2024-11-22 13:45:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:45:59,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:45:59,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:45:59,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:45:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:45:59,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:45:59,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:45:59,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:45:59,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:45:59,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:00,756 INFO L124 PetriNetUnfolderBase]: 7280/10189 cut-off events. [2024-11-22 13:46:00,757 INFO L125 PetriNetUnfolderBase]: For 11173/11173 co-relation queries the response was YES. [2024-11-22 13:46:00,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27719 conditions, 10189 events. 7280/10189 cut-off events. For 11173/11173 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 52283 event pairs, 3488 based on Foata normal form. 1/8862 useless extension candidates. Maximal degree in co-relation 20100. Up to 6616 conditions per place. [2024-11-22 13:46:00,802 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 124 selfloop transitions, 22 changer transitions 1/148 dead transitions. [2024-11-22 13:46:00,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 987 flow [2024-11-22 13:46:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-22 13:46:00,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-22 13:46:00,804 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 377 flow. Second operand 5 states and 131 transitions. [2024-11-22 13:46:00,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 987 flow [2024-11-22 13:46:00,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 947 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-22 13:46:00,851 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 591 flow [2024-11-22 13:46:00,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2024-11-22 13:46:00,852 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-22 13:46:00,852 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 591 flow [2024-11-22 13:46:00,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:46:00,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:00,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:00,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:46:00,853 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 1 more)] === [2024-11-22 13:46:00,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2126149539, now seen corresponding path program 5 times [2024-11-22 13:46:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:00,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835315121] [2024-11-22 13:46:00,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:00,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:00,866 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:00,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:00,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:00,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835315121] [2024-11-22 13:46:00,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835315121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:00,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:00,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77001492] [2024-11-22 13:46:00,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:00,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:00,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:00,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:00,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 591 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:46:00,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:00,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:01,651 INFO L124 PetriNetUnfolderBase]: 7280/10187 cut-off events. [2024-11-22 13:46:01,652 INFO L125 PetriNetUnfolderBase]: For 16282/16282 co-relation queries the response was YES. [2024-11-22 13:46:01,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29616 conditions, 10187 events. 7280/10187 cut-off events. For 16282/16282 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51714 event pairs, 3752 based on Foata normal form. 1/9128 useless extension candidates. Maximal degree in co-relation 28424. Up to 6705 conditions per place. [2024-11-22 13:46:01,793 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 123 selfloop transitions, 11 changer transitions 3/138 dead transitions. [2024-11-22 13:46:01,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 138 transitions, 1037 flow [2024-11-22 13:46:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-22 13:46:01,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-11-22 13:46:01,795 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 591 flow. Second operand 5 states and 121 transitions. [2024-11-22 13:46:01,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 138 transitions, 1037 flow [2024-11-22 13:46:01,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1029 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:01,834 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 616 flow [2024-11-22 13:46:01,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2024-11-22 13:46:01,837 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-11-22 13:46:01,837 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 616 flow [2024-11-22 13:46:01,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:46:01,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:01,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:01,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:46:01,838 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 1 more)] === [2024-11-22 13:46:01,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1870528389, now seen corresponding path program 6 times [2024-11-22 13:46:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:01,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678811707] [2024-11-22 13:46:01,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:01,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:01,864 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:01,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:01,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678811707] [2024-11-22 13:46:01,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678811707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:01,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:01,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:01,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908004139] [2024-11-22 13:46:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:01,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:01,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:01,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:01,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:01,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:46:01,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:01,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:01,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:02,800 INFO L124 PetriNetUnfolderBase]: 7463/10420 cut-off events. [2024-11-22 13:46:02,801 INFO L125 PetriNetUnfolderBase]: For 19317/19317 co-relation queries the response was YES. [2024-11-22 13:46:02,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30746 conditions, 10420 events. 7463/10420 cut-off events. For 19317/19317 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 52850 event pairs, 2328 based on Foata normal form. 1/9332 useless extension candidates. Maximal degree in co-relation 30154. Up to 4720 conditions per place. [2024-11-22 13:46:02,851 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 105 selfloop transitions, 45 changer transitions 1/152 dead transitions. [2024-11-22 13:46:02,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 152 transitions, 1179 flow [2024-11-22 13:46:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-22 13:46:02,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-22 13:46:02,853 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 616 flow. Second operand 5 states and 128 transitions. [2024-11-22 13:46:02,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 152 transitions, 1179 flow [2024-11-22 13:46:02,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 152 transitions, 1156 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:02,897 INFO L231 Difference]: Finished difference. Result has 73 places, 100 transitions, 859 flow [2024-11-22 13:46:02,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2024-11-22 13:46:02,898 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-22 13:46:02,898 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 859 flow [2024-11-22 13:46:02,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-22 13:46:02,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:02,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:02,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:46:02,899 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:02,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:02,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1888763971, now seen corresponding path program 1 times [2024-11-22 13:46:02,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:02,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842386822] [2024-11-22 13:46:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:02,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:03,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842386822] [2024-11-22 13:46:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842386822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266930329] [2024-11-22 13:46:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:03,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:46:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:46:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:46:03,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:03,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-22 13:46:03,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:03,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:03,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:04,258 INFO L124 PetriNetUnfolderBase]: 13070/18041 cut-off events. [2024-11-22 13:46:04,258 INFO L125 PetriNetUnfolderBase]: For 44989/44989 co-relation queries the response was YES. [2024-11-22 13:46:04,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58616 conditions, 18041 events. 13070/18041 cut-off events. For 44989/44989 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 98471 event pairs, 5015 based on Foata normal form. 5/16139 useless extension candidates. Maximal degree in co-relation 49617. Up to 7331 conditions per place. [2024-11-22 13:46:04,345 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 164 selfloop transitions, 23 changer transitions 8/196 dead transitions. [2024-11-22 13:46:04,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 196 transitions, 1880 flow [2024-11-22 13:46:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:46:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:46:04,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-11-22 13:46:04,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-11-22 13:46:04,347 INFO L175 Difference]: Start difference. First operand has 73 places, 100 transitions, 859 flow. Second operand 6 states and 135 transitions. [2024-11-22 13:46:04,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 196 transitions, 1880 flow [2024-11-22 13:46:04,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 196 transitions, 1794 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:04,514 INFO L231 Difference]: Finished difference. Result has 81 places, 112 transitions, 988 flow [2024-11-22 13:46:04,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=81, PETRI_TRANSITIONS=112} [2024-11-22 13:46:04,515 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-11-22 13:46:04,515 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 112 transitions, 988 flow [2024-11-22 13:46:04,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-22 13:46:04,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:04,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:04,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:46:04,516 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:04,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 428945330, now seen corresponding path program 1 times [2024-11-22 13:46:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:04,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798483162] [2024-11-22 13:46:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:04,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:04,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798483162] [2024-11-22 13:46:04,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798483162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:04,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:04,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:04,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120599412] [2024-11-22 13:46:04,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:04,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:46:04,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:46:04,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:46:04,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:04,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 112 transitions, 988 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-22 13:46:04,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:04,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:04,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:06,320 INFO L124 PetriNetUnfolderBase]: 20914/28531 cut-off events. [2024-11-22 13:46:06,321 INFO L125 PetriNetUnfolderBase]: For 80443/80443 co-relation queries the response was YES. [2024-11-22 13:46:06,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96856 conditions, 28531 events. 20914/28531 cut-off events. For 80443/80443 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 158238 event pairs, 8224 based on Foata normal form. 5/25421 useless extension candidates. Maximal degree in co-relation 87865. Up to 10761 conditions per place. [2024-11-22 13:46:06,484 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 181 selfloop transitions, 25 changer transitions 41/248 dead transitions. [2024-11-22 13:46:06,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 248 transitions, 2514 flow [2024-11-22 13:46:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:46:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:46:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-11-22 13:46:06,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-22 13:46:06,485 INFO L175 Difference]: Start difference. First operand has 81 places, 112 transitions, 988 flow. Second operand 6 states and 154 transitions. [2024-11-22 13:46:06,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 248 transitions, 2514 flow [2024-11-22 13:46:06,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 248 transitions, 2469 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:06,809 INFO L231 Difference]: Finished difference. Result has 89 places, 124 transitions, 1167 flow [2024-11-22 13:46:06,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1167, PETRI_PLACES=89, PETRI_TRANSITIONS=124} [2024-11-22 13:46:06,809 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-11-22 13:46:06,809 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 124 transitions, 1167 flow [2024-11-22 13:46:06,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-11-22 13:46:06,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:06,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:06,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:46:06,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:06,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -526697336, now seen corresponding path program 1 times [2024-11-22 13:46:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897459329] [2024-11-22 13:46:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897459329] [2024-11-22 13:46:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897459329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:06,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:06,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503980998] [2024-11-22 13:46:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:06,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:06,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:06,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:06,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 124 transitions, 1167 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:06,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:06,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:06,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:08,422 INFO L124 PetriNetUnfolderBase]: 19486/26684 cut-off events. [2024-11-22 13:46:08,423 INFO L125 PetriNetUnfolderBase]: For 82185/82185 co-relation queries the response was YES. [2024-11-22 13:46:08,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92886 conditions, 26684 events. 19486/26684 cut-off events. For 82185/82185 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 145791 event pairs, 5820 based on Foata normal form. 1/23742 useless extension candidates. Maximal degree in co-relation 92762. Up to 13657 conditions per place. [2024-11-22 13:46:08,638 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 185 selfloop transitions, 23 changer transitions 17/226 dead transitions. [2024-11-22 13:46:08,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 226 transitions, 2407 flow [2024-11-22 13:46:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-22 13:46:08,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-22 13:46:08,639 INFO L175 Difference]: Start difference. First operand has 89 places, 124 transitions, 1167 flow. Second operand 5 states and 127 transitions. [2024-11-22 13:46:08,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 226 transitions, 2407 flow [2024-11-22 13:46:08,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 226 transitions, 2352 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:08,943 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1366 flow [2024-11-22 13:46:08,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1366, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-11-22 13:46:08,944 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-11-22 13:46:08,944 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1366 flow [2024-11-22 13:46:08,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:08,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:08,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:08,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:46:08,944 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:08,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1684842140, now seen corresponding path program 2 times [2024-11-22 13:46:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810487402] [2024-11-22 13:46:08,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:08,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:08,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:09,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:09,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810487402] [2024-11-22 13:46:09,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810487402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:09,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:09,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:09,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104682255] [2024-11-22 13:46:09,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:09,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:09,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:09,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:09,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1366 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:09,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:09,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:09,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:11,250 INFO L124 PetriNetUnfolderBase]: 19241/26337 cut-off events. [2024-11-22 13:46:11,251 INFO L125 PetriNetUnfolderBase]: For 108085/108085 co-relation queries the response was YES. [2024-11-22 13:46:11,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92846 conditions, 26337 events. 19241/26337 cut-off events. For 108085/108085 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 144446 event pairs, 10629 based on Foata normal form. 1/23879 useless extension candidates. Maximal degree in co-relation 84700. Up to 19211 conditions per place. [2024-11-22 13:46:11,493 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 148 selfloop transitions, 20 changer transitions 17/186 dead transitions. [2024-11-22 13:46:11,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 186 transitions, 1916 flow [2024-11-22 13:46:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-22 13:46:11,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2024-11-22 13:46:11,495 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 1366 flow. Second operand 5 states and 122 transitions. [2024-11-22 13:46:11,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 186 transitions, 1916 flow [2024-11-22 13:46:12,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 186 transitions, 1875 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:12,068 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1327 flow [2024-11-22 13:46:12,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1327, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2024-11-22 13:46:12,069 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-11-22 13:46:12,069 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1327 flow [2024-11-22 13:46:12,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:12,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:12,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:12,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:46:12,070 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:12,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash 668742952, now seen corresponding path program 3 times [2024-11-22 13:46:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674865290] [2024-11-22 13:46:12,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:12,100 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:12,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:12,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:12,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674865290] [2024-11-22 13:46:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674865290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:12,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:12,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:12,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112509657] [2024-11-22 13:46:12,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:12,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:12,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:12,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1327 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:12,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:12,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:12,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:14,247 INFO L124 PetriNetUnfolderBase]: 19318/26435 cut-off events. [2024-11-22 13:46:14,248 INFO L125 PetriNetUnfolderBase]: For 110540/110540 co-relation queries the response was YES. [2024-11-22 13:46:14,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93579 conditions, 26435 events. 19318/26435 cut-off events. For 110540/110540 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 145010 event pairs, 10350 based on Foata normal form. 1/23958 useless extension candidates. Maximal degree in co-relation 93493. Up to 19211 conditions per place. [2024-11-22 13:46:14,449 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 163 selfloop transitions, 26 changer transitions 13/203 dead transitions. [2024-11-22 13:46:14,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 203 transitions, 2098 flow [2024-11-22 13:46:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-22 13:46:14,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-22 13:46:14,454 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1327 flow. Second operand 5 states and 131 transitions. [2024-11-22 13:46:14,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 203 transitions, 2098 flow [2024-11-22 13:46:14,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 203 transitions, 2052 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:14,806 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 1343 flow [2024-11-22 13:46:14,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1343, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2024-11-22 13:46:14,811 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-11-22 13:46:14,811 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 1343 flow [2024-11-22 13:46:14,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:14,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:14,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:14,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:46:14,811 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:14,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2097724826, now seen corresponding path program 4 times [2024-11-22 13:46:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:14,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47994408] [2024-11-22 13:46:14,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:14,826 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:14,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47994408] [2024-11-22 13:46:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47994408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:14,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078134432] [2024-11-22 13:46:14,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:14,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:14,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:14,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:14,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 1343 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:14,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:14,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:14,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:16,394 INFO L124 PetriNetUnfolderBase]: 19053/26048 cut-off events. [2024-11-22 13:46:16,394 INFO L125 PetriNetUnfolderBase]: For 115844/115844 co-relation queries the response was YES. [2024-11-22 13:46:16,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93933 conditions, 26048 events. 19053/26048 cut-off events. For 115844/115844 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 141807 event pairs, 11146 based on Foata normal form. 1/23582 useless extension candidates. Maximal degree in co-relation 88179. Up to 21122 conditions per place. [2024-11-22 13:46:16,632 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 153 selfloop transitions, 10 changer transitions 19/183 dead transitions. [2024-11-22 13:46:16,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 183 transitions, 1862 flow [2024-11-22 13:46:16,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-22 13:46:16,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-22 13:46:16,633 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 1343 flow. Second operand 5 states and 120 transitions. [2024-11-22 13:46:16,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 183 transitions, 1862 flow [2024-11-22 13:46:17,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 1810 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-22 13:46:17,194 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1229 flow [2024-11-22 13:46:17,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1229, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-11-22 13:46:17,195 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-11-22 13:46:17,195 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1229 flow [2024-11-22 13:46:17,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:17,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:17,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:17,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:46:17,195 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:17,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash 817982174, now seen corresponding path program 5 times [2024-11-22 13:46:17,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:17,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471687126] [2024-11-22 13:46:17,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:17,208 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:17,209 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:17,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:17,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471687126] [2024-11-22 13:46:17,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471687126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:17,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:17,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451597357] [2024-11-22 13:46:17,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:17,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:17,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:17,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1229 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:17,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:17,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:17,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:18,779 INFO L124 PetriNetUnfolderBase]: 19392/26564 cut-off events. [2024-11-22 13:46:18,779 INFO L125 PetriNetUnfolderBase]: For 111963/111963 co-relation queries the response was YES. [2024-11-22 13:46:18,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95459 conditions, 26564 events. 19392/26564 cut-off events. For 111963/111963 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 145015 event pairs, 5939 based on Foata normal form. 1/24061 useless extension candidates. Maximal degree in co-relation 95383. Up to 14665 conditions per place. [2024-11-22 13:46:19,026 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 180 selfloop transitions, 15 changer transitions 10/206 dead transitions. [2024-11-22 13:46:19,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 206 transitions, 2076 flow [2024-11-22 13:46:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-22 13:46:19,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-22 13:46:19,028 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1229 flow. Second operand 5 states and 127 transitions. [2024-11-22 13:46:19,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 206 transitions, 2076 flow [2024-11-22 13:46:19,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 206 transitions, 2034 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:19,480 INFO L231 Difference]: Finished difference. Result has 101 places, 136 transitions, 1340 flow [2024-11-22 13:46:19,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1340, PETRI_PLACES=101, PETRI_TRANSITIONS=136} [2024-11-22 13:46:19,481 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-11-22 13:46:19,481 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 136 transitions, 1340 flow [2024-11-22 13:46:19,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:19,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:19,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:19,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:46:19,482 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:19,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -353221696, now seen corresponding path program 6 times [2024-11-22 13:46:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:19,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273498767] [2024-11-22 13:46:19,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:19,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:19,496 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:19,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:46:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273498767] [2024-11-22 13:46:19,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273498767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:19,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:19,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:19,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114405214] [2024-11-22 13:46:19,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:19,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:19,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:19,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:19,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 136 transitions, 1340 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:19,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:19,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:19,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:21,373 INFO L124 PetriNetUnfolderBase]: 19393/26568 cut-off events. [2024-11-22 13:46:21,373 INFO L125 PetriNetUnfolderBase]: For 124989/124989 co-relation queries the response was YES. [2024-11-22 13:46:21,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97459 conditions, 26568 events. 19393/26568 cut-off events. For 124989/124989 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 145505 event pairs, 11171 based on Foata normal form. 1/24052 useless extension candidates. Maximal degree in co-relation 72860. Up to 21122 conditions per place. [2024-11-22 13:46:21,561 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 174 selfloop transitions, 17 changer transitions 10/202 dead transitions. [2024-11-22 13:46:21,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 202 transitions, 2016 flow [2024-11-22 13:46:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-22 13:46:21,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-22 13:46:21,562 INFO L175 Difference]: Start difference. First operand has 101 places, 136 transitions, 1340 flow. Second operand 5 states and 128 transitions. [2024-11-22 13:46:21,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 202 transitions, 2016 flow [2024-11-22 13:46:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 1999 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:21,884 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1346 flow [2024-11-22 13:46:21,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1346, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2024-11-22 13:46:21,885 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-11-22 13:46:21,889 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1346 flow [2024-11-22 13:46:21,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:46:21,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:21,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:21,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:46:21,890 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:21,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash -254441475, now seen corresponding path program 1 times [2024-11-22 13:46:21,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:21,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311432243] [2024-11-22 13:46:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:21,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311432243] [2024-11-22 13:46:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311432243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544344058] [2024-11-22 13:46:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:22,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:22,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:22,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1346 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:22,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:22,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:22,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:23,743 INFO L124 PetriNetUnfolderBase]: 20371/28035 cut-off events. [2024-11-22 13:46:23,744 INFO L125 PetriNetUnfolderBase]: For 140437/140437 co-relation queries the response was YES. [2024-11-22 13:46:23,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104266 conditions, 28035 events. 20371/28035 cut-off events. For 140437/140437 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 161994 event pairs, 5690 based on Foata normal form. 1/25388 useless extension candidates. Maximal degree in co-relation 78562. Up to 14385 conditions per place. [2024-11-22 13:46:24,042 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 205 selfloop transitions, 18 changer transitions 3/227 dead transitions. [2024-11-22 13:46:24,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 227 transitions, 2412 flow [2024-11-22 13:46:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-22 13:46:24,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-22 13:46:24,044 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1346 flow. Second operand 5 states and 133 transitions. [2024-11-22 13:46:24,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 227 transitions, 2412 flow [2024-11-22 13:46:24,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 227 transitions, 2354 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:24,616 INFO L231 Difference]: Finished difference. Result has 110 places, 149 transitions, 1583 flow [2024-11-22 13:46:24,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1583, PETRI_PLACES=110, PETRI_TRANSITIONS=149} [2024-11-22 13:46:24,617 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-11-22 13:46:24,618 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 149 transitions, 1583 flow [2024-11-22 13:46:24,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:24,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:24,618 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:24,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:46:24,619 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash -456908967, now seen corresponding path program 2 times [2024-11-22 13:46:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974865851] [2024-11-22 13:46:24,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:24,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:24,647 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:24,648 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:24,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:24,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974865851] [2024-11-22 13:46:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974865851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:24,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249841011] [2024-11-22 13:46:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:24,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:24,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:24,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:24,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:24,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 149 transitions, 1583 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:24,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:24,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:24,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:26,580 INFO L124 PetriNetUnfolderBase]: 20338/27999 cut-off events. [2024-11-22 13:46:26,580 INFO L125 PetriNetUnfolderBase]: For 148837/148837 co-relation queries the response was YES. [2024-11-22 13:46:26,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105771 conditions, 27999 events. 20338/27999 cut-off events. For 148837/148837 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 156330 event pairs, 11171 based on Foata normal form. 1/25353 useless extension candidates. Maximal degree in co-relation 100069. Up to 21122 conditions per place. [2024-11-22 13:46:26,871 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 190 selfloop transitions, 26 changer transitions 3/220 dead transitions. [2024-11-22 13:46:26,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 220 transitions, 2390 flow [2024-11-22 13:46:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-22 13:46:26,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-22 13:46:26,872 INFO L175 Difference]: Start difference. First operand has 110 places, 149 transitions, 1583 flow. Second operand 5 states and 130 transitions. [2024-11-22 13:46:26,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 220 transitions, 2390 flow [2024-11-22 13:46:27,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 220 transitions, 2360 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:27,294 INFO L231 Difference]: Finished difference. Result has 116 places, 153 transitions, 1716 flow [2024-11-22 13:46:27,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1716, PETRI_PLACES=116, PETRI_TRANSITIONS=153} [2024-11-22 13:46:27,295 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-11-22 13:46:27,295 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 153 transitions, 1716 flow [2024-11-22 13:46:27,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:27,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:27,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:27,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:46:27,298 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:27,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:27,298 INFO L85 PathProgramCache]: Analyzing trace with hash 623244311, now seen corresponding path program 3 times [2024-11-22 13:46:27,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:27,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997428758] [2024-11-22 13:46:27,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:46:27,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:27,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:46:27,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:27,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997428758] [2024-11-22 13:46:27,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997428758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:27,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:27,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:27,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857417933] [2024-11-22 13:46:27,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:27,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:27,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:27,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:27,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:27,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 153 transitions, 1716 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:27,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:27,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:27,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:31,181 INFO L124 PetriNetUnfolderBase]: 25978/35864 cut-off events. [2024-11-22 13:46:31,181 INFO L125 PetriNetUnfolderBase]: For 199528/199528 co-relation queries the response was YES. [2024-11-22 13:46:31,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136061 conditions, 35864 events. 25978/35864 cut-off events. For 199528/199528 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 214598 event pairs, 3467 based on Foata normal form. 1/32439 useless extension candidates. Maximal degree in co-relation 131658. Up to 11598 conditions per place. [2024-11-22 13:46:31,511 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 243 selfloop transitions, 45 changer transitions 4/293 dead transitions. [2024-11-22 13:46:31,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 293 transitions, 3349 flow [2024-11-22 13:46:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:46:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:46:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-11-22 13:46:31,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-11-22 13:46:31,513 INFO L175 Difference]: Start difference. First operand has 116 places, 153 transitions, 1716 flow. Second operand 6 states and 171 transitions. [2024-11-22 13:46:31,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 293 transitions, 3349 flow [2024-11-22 13:46:31,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 293 transitions, 3315 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:31,876 INFO L231 Difference]: Finished difference. Result has 124 places, 174 transitions, 2132 flow [2024-11-22 13:46:31,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2132, PETRI_PLACES=124, PETRI_TRANSITIONS=174} [2024-11-22 13:46:31,877 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-11-22 13:46:31,877 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 174 transitions, 2132 flow [2024-11-22 13:46:31,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:31,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:31,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:31,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:46:31,877 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:31,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1326802223, now seen corresponding path program 4 times [2024-11-22 13:46:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:31,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834012945] [2024-11-22 13:46:31,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:46:31,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:31,885 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:46:31,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:31,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:31,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834012945] [2024-11-22 13:46:31,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834012945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:31,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:31,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:31,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407354874] [2024-11-22 13:46:31,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:31,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:31,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:31,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:31,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:31,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:31,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 174 transitions, 2132 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:31,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:31,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:31,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:35,549 INFO L124 PetriNetUnfolderBase]: 26597/36749 cut-off events. [2024-11-22 13:46:35,549 INFO L125 PetriNetUnfolderBase]: For 237749/237749 co-relation queries the response was YES. [2024-11-22 13:46:35,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147976 conditions, 36749 events. 26597/36749 cut-off events. For 237749/237749 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 218550 event pairs, 6793 based on Foata normal form. 1/33192 useless extension candidates. Maximal degree in co-relation 143558. Up to 16510 conditions per place. [2024-11-22 13:46:35,978 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 237 selfloop transitions, 35 changer transitions 16/289 dead transitions. [2024-11-22 13:46:35,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 289 transitions, 3561 flow [2024-11-22 13:46:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:46:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:46:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-11-22 13:46:35,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-11-22 13:46:35,980 INFO L175 Difference]: Start difference. First operand has 124 places, 174 transitions, 2132 flow. Second operand 6 states and 160 transitions. [2024-11-22 13:46:35,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 289 transitions, 3561 flow [2024-11-22 13:46:37,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 289 transitions, 3497 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-11-22 13:46:37,417 INFO L231 Difference]: Finished difference. Result has 133 places, 179 transitions, 2280 flow [2024-11-22 13:46:37,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2280, PETRI_PLACES=133, PETRI_TRANSITIONS=179} [2024-11-22 13:46:37,419 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-11-22 13:46:37,419 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 179 transitions, 2280 flow [2024-11-22 13:46:37,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:37,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:37,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:37,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:46:37,419 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:37,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1128182105, now seen corresponding path program 5 times [2024-11-22 13:46:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:37,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805550074] [2024-11-22 13:46:37,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:46:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:37,442 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:46:37,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:37,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805550074] [2024-11-22 13:46:37,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805550074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:37,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:37,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:37,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487009433] [2024-11-22 13:46:37,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:37,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:37,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:37,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:37,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:37,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:37,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 179 transitions, 2280 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:37,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:37,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:37,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:41,379 INFO L124 PetriNetUnfolderBase]: 26392/36463 cut-off events. [2024-11-22 13:46:41,379 INFO L125 PetriNetUnfolderBase]: For 242686/242686 co-relation queries the response was YES. [2024-11-22 13:46:41,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148164 conditions, 36463 events. 26392/36463 cut-off events. For 242686/242686 co-relation queries the response was YES. Maximal size of possible extension queue 1584. Compared 215827 event pairs, 14218 based on Foata normal form. 1/32922 useless extension candidates. Maximal degree in co-relation 148042. Up to 29553 conditions per place. [2024-11-22 13:46:41,867 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 196 selfloop transitions, 30 changer transitions 8/235 dead transitions. [2024-11-22 13:46:41,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 235 transitions, 2987 flow [2024-11-22 13:46:41,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-22 13:46:41,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-22 13:46:41,869 INFO L175 Difference]: Start difference. First operand has 133 places, 179 transitions, 2280 flow. Second operand 5 states and 125 transitions. [2024-11-22 13:46:41,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 235 transitions, 2987 flow [2024-11-22 13:46:42,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 235 transitions, 2963 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-22 13:46:42,836 INFO L231 Difference]: Finished difference. Result has 136 places, 176 transitions, 2288 flow [2024-11-22 13:46:42,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2288, PETRI_PLACES=136, PETRI_TRANSITIONS=176} [2024-11-22 13:46:42,837 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-11-22 13:46:42,837 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 176 transitions, 2288 flow [2024-11-22 13:46:42,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:42,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:42,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:42,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:46:42,838 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:42,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash 674864337, now seen corresponding path program 6 times [2024-11-22 13:46:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:42,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24061716] [2024-11-22 13:46:42,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:46:42,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:42,853 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:46:42,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:42,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:42,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24061716] [2024-11-22 13:46:42,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24061716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:42,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:42,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506076640] [2024-11-22 13:46:42,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:42,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:42,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:42,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:42,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 176 transitions, 2288 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:42,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:42,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:42,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:46,727 INFO L124 PetriNetUnfolderBase]: 26199/36157 cut-off events. [2024-11-22 13:46:46,728 INFO L125 PetriNetUnfolderBase]: For 249253/249253 co-relation queries the response was YES. [2024-11-22 13:46:47,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147573 conditions, 36157 events. 26199/36157 cut-off events. For 249253/249253 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 211988 event pairs, 8773 based on Foata normal form. 1/32632 useless extension candidates. Maximal degree in co-relation 144790. Up to 18101 conditions per place. [2024-11-22 13:46:47,170 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 170 selfloop transitions, 57 changer transitions 9/237 dead transitions. [2024-11-22 13:46:47,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 237 transitions, 3080 flow [2024-11-22 13:46:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-22 13:46:47,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-22 13:46:47,171 INFO L175 Difference]: Start difference. First operand has 136 places, 176 transitions, 2288 flow. Second operand 5 states and 125 transitions. [2024-11-22 13:46:47,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 237 transitions, 3080 flow [2024-11-22 13:46:47,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 237 transitions, 2989 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-22 13:46:47,882 INFO L231 Difference]: Finished difference. Result has 137 places, 172 transitions, 2248 flow [2024-11-22 13:46:47,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2248, PETRI_PLACES=137, PETRI_TRANSITIONS=172} [2024-11-22 13:46:47,883 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-11-22 13:46:47,883 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 172 transitions, 2248 flow [2024-11-22 13:46:47,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:47,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:47,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:47,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 13:46:47,884 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:47,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:47,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1642666329, now seen corresponding path program 1 times [2024-11-22 13:46:47,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:47,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613415875] [2024-11-22 13:46:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:46:47,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:46:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613415875] [2024-11-22 13:46:47,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613415875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:47,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:47,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092920237] [2024-11-22 13:46:47,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:47,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:47,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:47,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 172 transitions, 2248 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:47,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:47,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:47,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:46:51,619 INFO L124 PetriNetUnfolderBase]: 27488/38068 cut-off events. [2024-11-22 13:46:51,619 INFO L125 PetriNetUnfolderBase]: For 269477/269477 co-relation queries the response was YES. [2024-11-22 13:46:51,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155901 conditions, 38068 events. 27488/38068 cut-off events. For 269477/269477 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 227879 event pairs, 13556 based on Foata normal form. 1/34373 useless extension candidates. Maximal degree in co-relation 152989. Up to 28032 conditions per place. [2024-11-22 13:46:52,082 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 225 selfloop transitions, 18 changer transitions 3/247 dead transitions. [2024-11-22 13:46:52,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 247 transitions, 3205 flow [2024-11-22 13:46:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:46:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:46:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-22 13:46:52,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2024-11-22 13:46:52,083 INFO L175 Difference]: Start difference. First operand has 137 places, 172 transitions, 2248 flow. Second operand 5 states and 132 transitions. [2024-11-22 13:46:52,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 247 transitions, 3205 flow [2024-11-22 13:46:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 247 transitions, 3074 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-22 13:46:53,209 INFO L231 Difference]: Finished difference. Result has 141 places, 176 transitions, 2284 flow [2024-11-22 13:46:53,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2284, PETRI_PLACES=141, PETRI_TRANSITIONS=176} [2024-11-22 13:46:53,209 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-11-22 13:46:53,209 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 176 transitions, 2284 flow [2024-11-22 13:46:53,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:53,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:46:53,210 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:46:53,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 13:46:53,210 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 13:46:53,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:46:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 915285135, now seen corresponding path program 2 times [2024-11-22 13:46:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:46:53,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728934334] [2024-11-22 13:46:53,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:46:53,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:46:53,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:46:53,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:46:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:46:53,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:46:53,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728934334] [2024-11-22 13:46:53,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728934334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:46:53,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:46:53,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:46:53,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311061550] [2024-11-22 13:46:53,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:46:53,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:46:53,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:46:53,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:46:53,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:46:53,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-22 13:46:53,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 176 transitions, 2284 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-22 13:46:53,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:46:53,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-22 13:46:53,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand