./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:06:16,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:06:16,766 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:06:16,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:06:16,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:06:16,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:06:16,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:06:16,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:06:16,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:06:16,806 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:06:16,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:06:16,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:06:16,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:06:16,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:06:16,808 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:06:16,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:06:16,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:06:16,809 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:06:16,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:06:16,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:06:16,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:06:16,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:06:16,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:06:16,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:06:16,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:06:16,812 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:06:16,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:06:16,812 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:06:16,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:06:16,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:06:16,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:06:16,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:06:16,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:06:16,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:06:16,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:06:16,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:06:16,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:06:16,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:06:16,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:06:16,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:06:16,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:06:16,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:06:16,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-10-13 07:06:17,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:06:17,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:06:17,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:06:17,080 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:06:17,081 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:06:17,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-13 07:06:18,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:06:18,673 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:06:18,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-13 07:06:18,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cfe176f/4b0fb77fc4c9434698b2739ecbf9302c/FLAG07a37b579 [2024-10-13 07:06:19,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cfe176f/4b0fb77fc4c9434698b2739ecbf9302c [2024-10-13 07:06:19,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:06:19,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:06:19,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:06:19,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:06:19,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:06:19,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0cbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19, skipping insertion in model container [2024-10-13 07:06:19,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:06:19,278 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-10-13 07:06:19,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:06:19,295 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:06:19,316 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2592,2605] [2024-10-13 07:06:19,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:06:19,335 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:06:19,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19 WrapperNode [2024-10-13 07:06:19,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:06:19,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:06:19,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:06:19,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:06:19,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,377 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 169 [2024-10-13 07:06:19,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:06:19,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:06:19,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:06:19,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:06:19,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,402 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 07:06:19,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:06:19,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:06:19,419 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:06:19,419 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:06:19,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (1/1) ... [2024-10-13 07:06:19,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:06:19,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:19,450 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) [2024-10-13 07:06:19,453 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 [2024-10-13 07:06:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:06:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:06:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:06:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:06:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:06:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:06:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:06:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:06:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:06:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:06:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:06:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:06:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:06:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:06:19,495 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:06:19,581 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:06:19,583 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:06:19,877 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:06:19,878 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:06:20,139 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:06:20,139 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 07:06:20,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:20 BoogieIcfgContainer [2024-10-13 07:06:20,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:06:20,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:06:20,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:06:20,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:06:20,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:06:19" (1/3) ... [2024-10-13 07:06:20,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5412503a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:20, skipping insertion in model container [2024-10-13 07:06:20,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:06:19" (2/3) ... [2024-10-13 07:06:20,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5412503a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:06:20, skipping insertion in model container [2024-10-13 07:06:20,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:06:20" (3/3) ... [2024-10-13 07:06:20,150 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-10-13 07:06:20,167 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:06:20,167 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:06:20,167 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:06:20,215 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 07:06:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2024-10-13 07:06:20,279 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-10-13 07:06:20,279 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:06:20,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-10-13 07:06:20,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2024-10-13 07:06:20,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2024-10-13 07:06:20,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:06:20,298 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;@286c9759, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:06:20,298 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 07:06:20,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:06:20,307 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2024-10-13 07:06:20,307 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:06:20,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:20,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:20,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:20,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -863716002, now seen corresponding path program 1 times [2024-10-13 07:06:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495588678] [2024-10-13 07:06:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:20,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495588678] [2024-10-13 07:06:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495588678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:20,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665615298] [2024-10-13 07:06:20,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:20,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:06:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:06:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:06:20,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:20,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:20,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:20,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:20,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:21,046 INFO L124 PetriNetUnfolderBase]: 237/396 cut-off events. [2024-10-13 07:06:21,047 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-13 07:06:21,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 396 events. 237/396 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1432 event pairs, 68 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 720. Up to 183 conditions per place. [2024-10-13 07:06:21,053 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 46 selfloop transitions, 5 changer transitions 2/54 dead transitions. [2024-10-13 07:06:21,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 244 flow [2024-10-13 07:06:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:06:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:06:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-10-13 07:06:21,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-10-13 07:06:21,067 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 5 states and 69 transitions. [2024-10-13 07:06:21,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 244 flow [2024-10-13 07:06:21,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:21,078 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 78 flow [2024-10-13 07:06:21,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2024-10-13 07:06:21,084 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2024-10-13 07:06:21,086 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 78 flow [2024-10-13 07:06:21,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:21,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:21,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:21,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:06:21,089 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:21,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1019207930, now seen corresponding path program 2 times [2024-10-13 07:06:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388811997] [2024-10-13 07:06:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:21,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388811997] [2024-10-13 07:06:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388811997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:21,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125699586] [2024-10-13 07:06:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:21,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:06:21,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:06:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:06:21,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:21,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:21,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:21,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:21,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:21,438 INFO L124 PetriNetUnfolderBase]: 461/788 cut-off events. [2024-10-13 07:06:21,438 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-10-13 07:06:21,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 788 events. 461/788 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3348 event pairs, 176 based on Foata normal form. 4/691 useless extension candidates. Maximal degree in co-relation 614. Up to 395 conditions per place. [2024-10-13 07:06:21,446 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 50 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-10-13 07:06:21,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 56 transitions, 275 flow [2024-10-13 07:06:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:06:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:06:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-10-13 07:06:21,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-10-13 07:06:21,449 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 78 flow. Second operand 5 states and 65 transitions. [2024-10-13 07:06:21,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 56 transitions, 275 flow [2024-10-13 07:06:21,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:06:21,451 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 96 flow [2024-10-13 07:06:21,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-10-13 07:06:21,454 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-10-13 07:06:21,454 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 96 flow [2024-10-13 07:06:21,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:21,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:21,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:21,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:06:21,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:21,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1072340398, now seen corresponding path program 3 times [2024-10-13 07:06:21,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:21,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261935042] [2024-10-13 07:06:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:21,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261935042] [2024-10-13 07:06:21,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261935042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:21,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:21,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:21,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654527864] [2024-10-13 07:06:21,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:21,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:06:21,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:06:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:06:21,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:21,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:21,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:21,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:21,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:21,763 INFO L124 PetriNetUnfolderBase]: 601/1029 cut-off events. [2024-10-13 07:06:21,763 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-10-13 07:06:21,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 1029 events. 601/1029 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4708 event pairs, 207 based on Foata normal form. 23/1051 useless extension candidates. Maximal degree in co-relation 885. Up to 766 conditions per place. [2024-10-13 07:06:21,770 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 45 selfloop transitions, 4 changer transitions 2/52 dead transitions. [2024-10-13 07:06:21,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 273 flow [2024-10-13 07:06:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:06:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:06:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-10-13 07:06:21,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-10-13 07:06:21,772 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 96 flow. Second operand 4 states and 58 transitions. [2024-10-13 07:06:21,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 273 flow [2024-10-13 07:06:21,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:06:21,776 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 134 flow [2024-10-13 07:06:21,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-10-13 07:06:21,779 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-10-13 07:06:21,779 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 134 flow [2024-10-13 07:06:21,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:21,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:21,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:21,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:06:21,780 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:21,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 921043552, now seen corresponding path program 4 times [2024-10-13 07:06:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198961969] [2024-10-13 07:06:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:21,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:21,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198961969] [2024-10-13 07:06:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198961969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:21,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:21,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998543650] [2024-10-13 07:06:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:21,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:06:21,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:06:21,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:06:21,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:21,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:21,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:21,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:21,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:22,077 INFO L124 PetriNetUnfolderBase]: 620/1051 cut-off events. [2024-10-13 07:06:22,077 INFO L125 PetriNetUnfolderBase]: For 781/781 co-relation queries the response was YES. [2024-10-13 07:06:22,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1051 events. 620/1051 cut-off events. For 781/781 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4721 event pairs, 254 based on Foata normal form. 20/1069 useless extension candidates. Maximal degree in co-relation 1537. Up to 778 conditions per place. [2024-10-13 07:06:22,084 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 47 selfloop transitions, 6 changer transitions 3/57 dead transitions. [2024-10-13 07:06:22,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 336 flow [2024-10-13 07:06:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:06:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:06:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-10-13 07:06:22,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-10-13 07:06:22,086 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 134 flow. Second operand 4 states and 59 transitions. [2024-10-13 07:06:22,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 336 flow [2024-10-13 07:06:22,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:06:22,091 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 194 flow [2024-10-13 07:06:22,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-10-13 07:06:22,092 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-13 07:06:22,092 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 194 flow [2024-10-13 07:06:22,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:22,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:22,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:22,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:06:22,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:22,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:22,093 INFO L85 PathProgramCache]: Analyzing trace with hash -486151816, now seen corresponding path program 1 times [2024-10-13 07:06:22,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:22,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474526369] [2024-10-13 07:06:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:22,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:22,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:22,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474526369] [2024-10-13 07:06:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474526369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:22,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652156592] [2024-10-13 07:06:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:06:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:06:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:06:22,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:22,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:22,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:22,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:22,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:22,353 INFO L124 PetriNetUnfolderBase]: 559/944 cut-off events. [2024-10-13 07:06:22,353 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-10-13 07:06:22,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 944 events. 559/944 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4241 event pairs, 183 based on Foata normal form. 16/958 useless extension candidates. Maximal degree in co-relation 937. Up to 479 conditions per place. [2024-10-13 07:06:22,359 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 56 selfloop transitions, 8 changer transitions 3/68 dead transitions. [2024-10-13 07:06:22,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 447 flow [2024-10-13 07:06:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:06:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:06:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-13 07:06:22,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-10-13 07:06:22,361 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 194 flow. Second operand 4 states and 66 transitions. [2024-10-13 07:06:22,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 447 flow [2024-10-13 07:06:22,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 441 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 07:06:22,365 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 210 flow [2024-10-13 07:06:22,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-10-13 07:06:22,366 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-13 07:06:22,367 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 210 flow [2024-10-13 07:06:22,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:22,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:22,367 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:22,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:06:22,368 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:22,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1435951390, now seen corresponding path program 1 times [2024-10-13 07:06:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:22,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578160619] [2024-10-13 07:06:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:22,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:22,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578160619] [2024-10-13 07:06:22,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578160619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:22,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:22,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:22,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138277666] [2024-10-13 07:06:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:22,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:06:22,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:22,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:06:22,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:06:22,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:22,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:22,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:22,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:22,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:22,585 INFO L124 PetriNetUnfolderBase]: 497/831 cut-off events. [2024-10-13 07:06:22,586 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-10-13 07:06:22,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 831 events. 497/831 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3428 event pairs, 183 based on Foata normal form. 18/847 useless extension candidates. Maximal degree in co-relation 2284. Up to 441 conditions per place. [2024-10-13 07:06:22,591 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 52 selfloop transitions, 8 changer transitions 2/63 dead transitions. [2024-10-13 07:06:22,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 447 flow [2024-10-13 07:06:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:06:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:06:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-10-13 07:06:22,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-10-13 07:06:22,593 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 210 flow. Second operand 4 states and 62 transitions. [2024-10-13 07:06:22,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 447 flow [2024-10-13 07:06:22,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 421 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-13 07:06:22,597 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 214 flow [2024-10-13 07:06:22,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-10-13 07:06:22,598 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-13 07:06:22,598 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 214 flow [2024-10-13 07:06:22,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:22,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:22,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:22,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:06:22,599 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:22,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1602538200, now seen corresponding path program 1 times [2024-10-13 07:06:22,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:22,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494536626] [2024-10-13 07:06:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494536626] [2024-10-13 07:06:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494536626] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:22,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:22,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:06:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743768691] [2024-10-13 07:06:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:22,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:06:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:06:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:06:22,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:22,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:22,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:22,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:22,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:22,773 INFO L124 PetriNetUnfolderBase]: 495/827 cut-off events. [2024-10-13 07:06:22,773 INFO L125 PetriNetUnfolderBase]: For 1280/1280 co-relation queries the response was YES. [2024-10-13 07:06:22,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 827 events. 495/827 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3422 event pairs, 328 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 2325. Up to 819 conditions per place. [2024-10-13 07:06:22,778 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-10-13 07:06:22,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 294 flow [2024-10-13 07:06:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:06:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:06:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-10-13 07:06:22,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-10-13 07:06:22,780 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 214 flow. Second operand 3 states and 37 transitions. [2024-10-13 07:06:22,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 294 flow [2024-10-13 07:06:22,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 07:06:22,783 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 224 flow [2024-10-13 07:06:22,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-10-13 07:06:22,784 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-10-13 07:06:22,784 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 224 flow [2024-10-13 07:06:22,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:22,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:22,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:22,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:06:22,785 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:22,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash -168502724, now seen corresponding path program 1 times [2024-10-13 07:06:22,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:22,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657432336] [2024-10-13 07:06:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:22,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:22,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657432336] [2024-10-13 07:06:22,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657432336] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:22,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782112379] [2024-10-13 07:06:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:22,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:22,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:06:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:22,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 07:06:22,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:23,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782112379] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:06:23,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:06:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-13 07:06:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149700608] [2024-10-13 07:06:23,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:06:23,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:23,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:23,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:06:23,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:23,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:23,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:23,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:23,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:23,194 INFO L124 PetriNetUnfolderBase]: 495/833 cut-off events. [2024-10-13 07:06:23,197 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2024-10-13 07:06:23,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 833 events. 495/833 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3411 event pairs, 328 based on Foata normal form. 3/835 useless extension candidates. Maximal degree in co-relation 2434. Up to 819 conditions per place. [2024-10-13 07:06:23,203 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-10-13 07:06:23,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 336 flow [2024-10-13 07:06:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:06:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:06:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-10-13 07:06:23,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-10-13 07:06:23,204 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 224 flow. Second operand 6 states and 56 transitions. [2024-10-13 07:06:23,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 336 flow [2024-10-13 07:06:23,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:06:23,210 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 286 flow [2024-10-13 07:06:23,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-10-13 07:06:23,212 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-10-13 07:06:23,213 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 286 flow [2024-10-13 07:06:23,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:23,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:23,214 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:23,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:06:23,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:23,415 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:23,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1918512510, now seen corresponding path program 2 times [2024-10-13 07:06:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491040209] [2024-10-13 07:06:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 07:06:23,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491040209] [2024-10-13 07:06:23,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491040209] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559463436] [2024-10-13 07:06:23,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:06:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:23,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:23,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:06:23,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:06:23,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:23,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 07:06:23,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:24,009 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:06:24,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 64 [2024-10-13 07:06:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 07:06:24,128 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:24,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559463436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:24,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:24,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-10-13 07:06:24,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692409629] [2024-10-13 07:06:24,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:24,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:24,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:24,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:24,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:06:24,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:24,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:24,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:24,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:24,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:24,683 INFO L124 PetriNetUnfolderBase]: 653/1118 cut-off events. [2024-10-13 07:06:24,683 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-10-13 07:06:24,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 1118 events. 653/1118 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5308 event pairs, 121 based on Foata normal form. 6/1123 useless extension candidates. Maximal degree in co-relation 3220. Up to 419 conditions per place. [2024-10-13 07:06:24,690 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 90 selfloop transitions, 10 changer transitions 16/117 dead transitions. [2024-10-13 07:06:24,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 117 transitions, 808 flow [2024-10-13 07:06:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:06:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:06:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-10-13 07:06:24,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-10-13 07:06:24,692 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 286 flow. Second operand 9 states and 115 transitions. [2024-10-13 07:06:24,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 117 transitions, 808 flow [2024-10-13 07:06:24,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 792 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 07:06:24,696 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 325 flow [2024-10-13 07:06:24,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=325, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-10-13 07:06:24,698 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-10-13 07:06:24,698 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 325 flow [2024-10-13 07:06:24,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:24,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:24,698 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:24,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:24,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-13 07:06:24,899 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:24,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1697157572, now seen corresponding path program 3 times [2024-10-13 07:06:24,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:24,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511215701] [2024-10-13 07:06:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 07:06:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511215701] [2024-10-13 07:06:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511215701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488309931] [2024-10-13 07:06:25,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:06:25,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:25,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:25,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:25,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:06:25,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:06:25,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:25,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 07:06:25,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:25,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:06:25,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-10-13 07:06:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 07:06:25,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:25,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488309931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:25,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:25,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-10-13 07:06:25,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393005766] [2024-10-13 07:06:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:25,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:06:25,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:25,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:25,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:25,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:25,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:26,210 INFO L124 PetriNetUnfolderBase]: 774/1339 cut-off events. [2024-10-13 07:06:26,210 INFO L125 PetriNetUnfolderBase]: For 2294/2294 co-relation queries the response was YES. [2024-10-13 07:06:26,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4438 conditions, 1339 events. 774/1339 cut-off events. For 2294/2294 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6805 event pairs, 131 based on Foata normal form. 5/1343 useless extension candidates. Maximal degree in co-relation 4369. Up to 433 conditions per place. [2024-10-13 07:06:26,218 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 125 selfloop transitions, 26 changer transitions 6/158 dead transitions. [2024-10-13 07:06:26,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 158 transitions, 1118 flow [2024-10-13 07:06:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:06:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:06:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-10-13 07:06:26,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44387755102040816 [2024-10-13 07:06:26,220 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 325 flow. Second operand 14 states and 174 transitions. [2024-10-13 07:06:26,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 158 transitions, 1118 flow [2024-10-13 07:06:26,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 158 transitions, 1048 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:26,227 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 526 flow [2024-10-13 07:06:26,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=526, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-10-13 07:06:26,228 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-10-13 07:06:26,228 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 526 flow [2024-10-13 07:06:26,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:26,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:26,228 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:26,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:26,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:26,433 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:26,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash -644626634, now seen corresponding path program 4 times [2024-10-13 07:06:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:26,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726568838] [2024-10-13 07:06:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 07:06:26,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:26,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726568838] [2024-10-13 07:06:26,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726568838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:26,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212265721] [2024-10-13 07:06:26,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:06:26,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:26,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:26,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:26,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:06:26,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:06:26,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:26,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 07:06:26,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:26,880 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:06:26,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 64 [2024-10-13 07:06:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 07:06:26,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212265721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:26,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:26,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-10-13 07:06:26,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016797157] [2024-10-13 07:06:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:26,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:06:26,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:26,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:26,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:26,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:26,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:27,551 INFO L124 PetriNetUnfolderBase]: 775/1345 cut-off events. [2024-10-13 07:06:27,551 INFO L125 PetriNetUnfolderBase]: For 3330/3330 co-relation queries the response was YES. [2024-10-13 07:06:27,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4924 conditions, 1345 events. 775/1345 cut-off events. For 3330/3330 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6817 event pairs, 171 based on Foata normal form. 6/1350 useless extension candidates. Maximal degree in co-relation 4849. Up to 433 conditions per place. [2024-10-13 07:06:27,562 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 100 selfloop transitions, 22 changer transitions 12/135 dead transitions. [2024-10-13 07:06:27,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1110 flow [2024-10-13 07:06:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:06:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:06:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-10-13 07:06:27,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-13 07:06:27,565 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 526 flow. Second operand 10 states and 132 transitions. [2024-10-13 07:06:27,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1110 flow [2024-10-13 07:06:27,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 1046 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-13 07:06:27,577 INFO L231 Difference]: Finished difference. Result has 87 places, 67 transitions, 551 flow [2024-10-13 07:06:27,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=551, PETRI_PLACES=87, PETRI_TRANSITIONS=67} [2024-10-13 07:06:27,578 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2024-10-13 07:06:27,578 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 67 transitions, 551 flow [2024-10-13 07:06:27,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:27,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:27,579 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:27,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:27,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:27,783 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:27,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash 637162094, now seen corresponding path program 5 times [2024-10-13 07:06:27,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904584877] [2024-10-13 07:06:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 07:06:27,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904584877] [2024-10-13 07:06:27,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904584877] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868146158] [2024-10-13 07:06:27,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:06:27,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:27,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:27,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:27,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:06:28,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 07:06:28,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:28,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:06:28,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 07:06:28,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 07:06:28,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868146158] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:06:28,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:06:28,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-13 07:06:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203358480] [2024-10-13 07:06:28,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:06:28,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:06:28,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:06:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:06:28,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:28,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 67 transitions, 551 flow. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:28,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:28,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:28,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:28,377 INFO L124 PetriNetUnfolderBase]: 760/1316 cut-off events. [2024-10-13 07:06:28,377 INFO L125 PetriNetUnfolderBase]: For 4053/4053 co-relation queries the response was YES. [2024-10-13 07:06:28,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4896 conditions, 1316 events. 760/1316 cut-off events. For 4053/4053 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6399 event pairs, 517 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 4809. Up to 1293 conditions per place. [2024-10-13 07:06:28,387 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 56 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-10-13 07:06:28,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 69 transitions, 699 flow [2024-10-13 07:06:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:06:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:06:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-10-13 07:06:28,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29081632653061223 [2024-10-13 07:06:28,389 INFO L175 Difference]: Start difference. First operand has 87 places, 67 transitions, 551 flow. Second operand 7 states and 57 transitions. [2024-10-13 07:06:28,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 69 transitions, 699 flow [2024-10-13 07:06:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 69 transitions, 658 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-13 07:06:28,401 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 556 flow [2024-10-13 07:06:28,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-10-13 07:06:28,403 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2024-10-13 07:06:28,403 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 556 flow [2024-10-13 07:06:28,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:28,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:28,403 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:28,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 07:06:28,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 07:06:28,604 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:28,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:28,605 INFO L85 PathProgramCache]: Analyzing trace with hash -580202372, now seen corresponding path program 6 times [2024-10-13 07:06:28,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:28,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406895792] [2024-10-13 07:06:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:28,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:29,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:29,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406895792] [2024-10-13 07:06:29,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406895792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:29,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:29,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049977211] [2024-10-13 07:06:29,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:29,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:29,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:29,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:29,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:29,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 556 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:29,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:29,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:29,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:30,930 INFO L124 PetriNetUnfolderBase]: 1204/2128 cut-off events. [2024-10-13 07:06:30,930 INFO L125 PetriNetUnfolderBase]: For 4645/4645 co-relation queries the response was YES. [2024-10-13 07:06:30,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 2128 events. 1204/2128 cut-off events. For 4645/4645 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11931 event pairs, 65 based on Foata normal form. 6/2134 useless extension candidates. Maximal degree in co-relation 7193. Up to 353 conditions per place. [2024-10-13 07:06:30,947 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 146 selfloop transitions, 65 changer transitions 17/229 dead transitions. [2024-10-13 07:06:30,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 229 transitions, 1789 flow [2024-10-13 07:06:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 07:06:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 07:06:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 249 transitions. [2024-10-13 07:06:30,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-10-13 07:06:30,950 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 556 flow. Second operand 24 states and 249 transitions. [2024-10-13 07:06:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 229 transitions, 1789 flow [2024-10-13 07:06:30,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 229 transitions, 1765 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:30,966 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 1027 flow [2024-10-13 07:06:30,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1027, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-10-13 07:06:30,968 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 84 predicate places. [2024-10-13 07:06:30,968 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 1027 flow [2024-10-13 07:06:30,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:30,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:30,970 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:30,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 07:06:30,971 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:30,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash -180405476, now seen corresponding path program 7 times [2024-10-13 07:06:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44914382] [2024-10-13 07:06:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:30,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:31,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44914382] [2024-10-13 07:06:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44914382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:31,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:31,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:31,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393927499] [2024-10-13 07:06:31,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:31,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:31,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:31,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:31,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:31,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 1027 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:31,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:31,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:31,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:32,896 INFO L124 PetriNetUnfolderBase]: 1384/2445 cut-off events. [2024-10-13 07:06:32,897 INFO L125 PetriNetUnfolderBase]: For 9071/9071 co-relation queries the response was YES. [2024-10-13 07:06:32,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9782 conditions, 2445 events. 1384/2445 cut-off events. For 9071/9071 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14258 event pairs, 138 based on Foata normal form. 1/2446 useless extension candidates. Maximal degree in co-relation 9689. Up to 592 conditions per place. [2024-10-13 07:06:32,915 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 154 selfloop transitions, 78 changer transitions 10/243 dead transitions. [2024-10-13 07:06:32,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 243 transitions, 2371 flow [2024-10-13 07:06:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 07:06:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 07:06:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 231 transitions. [2024-10-13 07:06:32,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-13 07:06:32,917 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 1027 flow. Second operand 21 states and 231 transitions. [2024-10-13 07:06:32,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 243 transitions, 2371 flow [2024-10-13 07:06:32,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 243 transitions, 2176 flow, removed 65 selfloop flow, removed 13 redundant places. [2024-10-13 07:06:32,951 INFO L231 Difference]: Finished difference. Result has 126 places, 142 transitions, 1592 flow [2024-10-13 07:06:32,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1592, PETRI_PLACES=126, PETRI_TRANSITIONS=142} [2024-10-13 07:06:32,952 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 100 predicate places. [2024-10-13 07:06:32,952 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 142 transitions, 1592 flow [2024-10-13 07:06:32,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:32,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:32,953 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:32,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 07:06:32,953 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:32,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1220880394, now seen corresponding path program 8 times [2024-10-13 07:06:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:32,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187742002] [2024-10-13 07:06:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:32,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:33,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:33,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187742002] [2024-10-13 07:06:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187742002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878004996] [2024-10-13 07:06:33,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:33,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:33,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:33,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:33,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 142 transitions, 1592 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:33,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:33,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:33,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:34,688 INFO L124 PetriNetUnfolderBase]: 1598/2829 cut-off events. [2024-10-13 07:06:34,689 INFO L125 PetriNetUnfolderBase]: For 12566/12566 co-relation queries the response was YES. [2024-10-13 07:06:34,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12023 conditions, 2829 events. 1598/2829 cut-off events. For 12566/12566 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17152 event pairs, 206 based on Foata normal form. 1/2830 useless extension candidates. Maximal degree in co-relation 11921. Up to 703 conditions per place. [2024-10-13 07:06:34,713 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 165 selfloop transitions, 112 changer transitions 10/288 dead transitions. [2024-10-13 07:06:34,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 288 transitions, 3083 flow [2024-10-13 07:06:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 07:06:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 07:06:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 256 transitions. [2024-10-13 07:06:34,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39751552795031053 [2024-10-13 07:06:34,716 INFO L175 Difference]: Start difference. First operand has 126 places, 142 transitions, 1592 flow. Second operand 23 states and 256 transitions. [2024-10-13 07:06:34,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 288 transitions, 3083 flow [2024-10-13 07:06:34,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 288 transitions, 2895 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:34,773 INFO L231 Difference]: Finished difference. Result has 153 places, 185 transitions, 2293 flow [2024-10-13 07:06:34,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2293, PETRI_PLACES=153, PETRI_TRANSITIONS=185} [2024-10-13 07:06:34,775 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2024-10-13 07:06:34,776 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 185 transitions, 2293 flow [2024-10-13 07:06:34,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:34,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:34,776 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:34,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 07:06:34,776 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:34,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash 354824326, now seen corresponding path program 9 times [2024-10-13 07:06:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162791316] [2024-10-13 07:06:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:35,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162791316] [2024-10-13 07:06:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162791316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:35,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747833631] [2024-10-13 07:06:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:35,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:35,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:35,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 185 transitions, 2293 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:35,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:35,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:35,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:36,654 INFO L124 PetriNetUnfolderBase]: 1604/2840 cut-off events. [2024-10-13 07:06:36,654 INFO L125 PetriNetUnfolderBase]: For 15636/15636 co-relation queries the response was YES. [2024-10-13 07:06:36,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13076 conditions, 2840 events. 1604/2840 cut-off events. For 15636/15636 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17162 event pairs, 179 based on Foata normal form. 1/2841 useless extension candidates. Maximal degree in co-relation 12966. Up to 703 conditions per place. [2024-10-13 07:06:36,671 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 174 selfloop transitions, 120 changer transitions 10/305 dead transitions. [2024-10-13 07:06:36,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 305 transitions, 3533 flow [2024-10-13 07:06:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 07:06:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 07:06:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 276 transitions. [2024-10-13 07:06:36,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3942857142857143 [2024-10-13 07:06:36,673 INFO L175 Difference]: Start difference. First operand has 153 places, 185 transitions, 2293 flow. Second operand 25 states and 276 transitions. [2024-10-13 07:06:36,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 305 transitions, 3533 flow [2024-10-13 07:06:36,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 305 transitions, 3369 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-10-13 07:06:36,756 INFO L231 Difference]: Finished difference. Result has 175 places, 193 transitions, 2570 flow [2024-10-13 07:06:36,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2570, PETRI_PLACES=175, PETRI_TRANSITIONS=193} [2024-10-13 07:06:36,757 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2024-10-13 07:06:36,757 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 193 transitions, 2570 flow [2024-10-13 07:06:36,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:36,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:36,757 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:36,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 07:06:36,758 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:36,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash 711426076, now seen corresponding path program 10 times [2024-10-13 07:06:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:36,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770931969] [2024-10-13 07:06:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:36,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:37,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:37,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770931969] [2024-10-13 07:06:37,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770931969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:37,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:37,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:37,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324311962] [2024-10-13 07:06:37,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:37,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:37,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:37,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:37,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 193 transitions, 2570 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:37,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:37,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:37,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:38,410 INFO L124 PetriNetUnfolderBase]: 1733/3129 cut-off events. [2024-10-13 07:06:38,411 INFO L125 PetriNetUnfolderBase]: For 18378/18378 co-relation queries the response was YES. [2024-10-13 07:06:38,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14529 conditions, 3129 events. 1733/3129 cut-off events. For 18378/18378 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19715 event pairs, 226 based on Foata normal form. 1/3130 useless extension candidates. Maximal degree in co-relation 14416. Up to 941 conditions per place. [2024-10-13 07:06:38,439 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 152 selfloop transitions, 115 changer transitions 9/277 dead transitions. [2024-10-13 07:06:38,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 277 transitions, 3656 flow [2024-10-13 07:06:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 07:06:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 07:06:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 193 transitions. [2024-10-13 07:06:38,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38293650793650796 [2024-10-13 07:06:38,442 INFO L175 Difference]: Start difference. First operand has 175 places, 193 transitions, 2570 flow. Second operand 18 states and 193 transitions. [2024-10-13 07:06:38,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 277 transitions, 3656 flow [2024-10-13 07:06:38,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 277 transitions, 3398 flow, removed 43 selfloop flow, removed 18 redundant places. [2024-10-13 07:06:38,532 INFO L231 Difference]: Finished difference. Result has 178 places, 202 transitions, 2792 flow [2024-10-13 07:06:38,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2792, PETRI_PLACES=178, PETRI_TRANSITIONS=202} [2024-10-13 07:06:38,534 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 152 predicate places. [2024-10-13 07:06:38,534 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 202 transitions, 2792 flow [2024-10-13 07:06:38,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:38,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:38,535 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:38,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 07:06:38,535 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:38,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash 685650592, now seen corresponding path program 11 times [2024-10-13 07:06:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:38,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994320207] [2024-10-13 07:06:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994320207] [2024-10-13 07:06:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994320207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:39,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:39,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138926107] [2024-10-13 07:06:39,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:39,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:39,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:39,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:39,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:39,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 202 transitions, 2792 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:39,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:39,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:39,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:40,220 INFO L124 PetriNetUnfolderBase]: 1767/3189 cut-off events. [2024-10-13 07:06:40,220 INFO L125 PetriNetUnfolderBase]: For 19576/19576 co-relation queries the response was YES. [2024-10-13 07:06:40,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14972 conditions, 3189 events. 1767/3189 cut-off events. For 19576/19576 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20269 event pairs, 254 based on Foata normal form. 1/3190 useless extension candidates. Maximal degree in co-relation 14855. Up to 953 conditions per place. [2024-10-13 07:06:40,253 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 170 selfloop transitions, 119 changer transitions 10/300 dead transitions. [2024-10-13 07:06:40,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 300 transitions, 3855 flow [2024-10-13 07:06:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 07:06:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 07:06:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 242 transitions. [2024-10-13 07:06:40,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-13 07:06:40,255 INFO L175 Difference]: Start difference. First operand has 178 places, 202 transitions, 2792 flow. Second operand 22 states and 242 transitions. [2024-10-13 07:06:40,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 300 transitions, 3855 flow [2024-10-13 07:06:40,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 300 transitions, 3683 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-10-13 07:06:40,462 INFO L231 Difference]: Finished difference. Result has 190 places, 205 transitions, 2976 flow [2024-10-13 07:06:40,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2976, PETRI_PLACES=190, PETRI_TRANSITIONS=205} [2024-10-13 07:06:40,463 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 164 predicate places. [2024-10-13 07:06:40,463 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 205 transitions, 2976 flow [2024-10-13 07:06:40,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:40,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:40,463 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:40,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 07:06:40,464 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:40,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1120903812, now seen corresponding path program 12 times [2024-10-13 07:06:40,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:40,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934929620] [2024-10-13 07:06:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:40,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934929620] [2024-10-13 07:06:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934929620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:41,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:41,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:41,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737509364] [2024-10-13 07:06:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:41,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:41,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:41,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 205 transitions, 2976 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:41,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:41,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:41,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:42,089 INFO L124 PetriNetUnfolderBase]: 1848/3365 cut-off events. [2024-10-13 07:06:42,089 INFO L125 PetriNetUnfolderBase]: For 21557/21557 co-relation queries the response was YES. [2024-10-13 07:06:42,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15865 conditions, 3365 events. 1848/3365 cut-off events. For 21557/21557 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21852 event pairs, 290 based on Foata normal form. 1/3366 useless extension candidates. Maximal degree in co-relation 15747. Up to 898 conditions per place. [2024-10-13 07:06:42,114 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 164 selfloop transitions, 117 changer transitions 9/291 dead transitions. [2024-10-13 07:06:42,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 291 transitions, 4001 flow [2024-10-13 07:06:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 07:06:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 07:06:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 212 transitions. [2024-10-13 07:06:42,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-10-13 07:06:42,116 INFO L175 Difference]: Start difference. First operand has 190 places, 205 transitions, 2976 flow. Second operand 20 states and 212 transitions. [2024-10-13 07:06:42,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 291 transitions, 4001 flow [2024-10-13 07:06:42,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 291 transitions, 3807 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-10-13 07:06:42,203 INFO L231 Difference]: Finished difference. Result has 193 places, 209 transitions, 3109 flow [2024-10-13 07:06:42,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3109, PETRI_PLACES=193, PETRI_TRANSITIONS=209} [2024-10-13 07:06:42,203 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2024-10-13 07:06:42,204 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 209 transitions, 3109 flow [2024-10-13 07:06:42,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:42,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:42,204 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:42,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 07:06:42,204 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:42,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash -973873094, now seen corresponding path program 13 times [2024-10-13 07:06:42,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:42,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794238457] [2024-10-13 07:06:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794238457] [2024-10-13 07:06:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794238457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058372933] [2024-10-13 07:06:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:42,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:42,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:42,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:42,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:42,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 209 transitions, 3109 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:42,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:42,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:42,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:43,757 INFO L124 PetriNetUnfolderBase]: 1931/3531 cut-off events. [2024-10-13 07:06:43,757 INFO L125 PetriNetUnfolderBase]: For 22815/22815 co-relation queries the response was YES. [2024-10-13 07:06:43,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16819 conditions, 3531 events. 1931/3531 cut-off events. For 22815/22815 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23318 event pairs, 175 based on Foata normal form. 1/3532 useless extension candidates. Maximal degree in co-relation 16701. Up to 722 conditions per place. [2024-10-13 07:06:43,779 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 210 selfloop transitions, 139 changer transitions 8/358 dead transitions. [2024-10-13 07:06:43,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 358 transitions, 4990 flow [2024-10-13 07:06:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 07:06:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 07:06:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 244 transitions. [2024-10-13 07:06:43,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-10-13 07:06:43,783 INFO L175 Difference]: Start difference. First operand has 193 places, 209 transitions, 3109 flow. Second operand 22 states and 244 transitions. [2024-10-13 07:06:43,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 358 transitions, 4990 flow [2024-10-13 07:06:43,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 358 transitions, 4700 flow, removed 8 selfloop flow, removed 19 redundant places. [2024-10-13 07:06:43,885 INFO L231 Difference]: Finished difference. Result has 206 places, 248 transitions, 3884 flow [2024-10-13 07:06:43,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3884, PETRI_PLACES=206, PETRI_TRANSITIONS=248} [2024-10-13 07:06:43,886 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 180 predicate places. [2024-10-13 07:06:43,886 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 248 transitions, 3884 flow [2024-10-13 07:06:43,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:43,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:43,886 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:43,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 07:06:43,887 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:43,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2015042110, now seen corresponding path program 14 times [2024-10-13 07:06:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267322654] [2024-10-13 07:06:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:44,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:44,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267322654] [2024-10-13 07:06:44,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267322654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:44,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:44,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:44,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62260379] [2024-10-13 07:06:44,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:44,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:44,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:44,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:44,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 248 transitions, 3884 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:44,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:44,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:44,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:45,558 INFO L124 PetriNetUnfolderBase]: 1948/3582 cut-off events. [2024-10-13 07:06:45,559 INFO L125 PetriNetUnfolderBase]: For 25434/25434 co-relation queries the response was YES. [2024-10-13 07:06:45,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17576 conditions, 3582 events. 1948/3582 cut-off events. For 25434/25434 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23735 event pairs, 97 based on Foata normal form. 1/3583 useless extension candidates. Maximal degree in co-relation 17448. Up to 683 conditions per place. [2024-10-13 07:06:45,597 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 132 selfloop transitions, 210 changer transitions 7/350 dead transitions. [2024-10-13 07:06:45,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 350 transitions, 5260 flow [2024-10-13 07:06:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 07:06:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 07:06:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 205 transitions. [2024-10-13 07:06:45,599 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3486394557823129 [2024-10-13 07:06:45,599 INFO L175 Difference]: Start difference. First operand has 206 places, 248 transitions, 3884 flow. Second operand 21 states and 205 transitions. [2024-10-13 07:06:45,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 350 transitions, 5260 flow [2024-10-13 07:06:45,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 350 transitions, 5044 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-10-13 07:06:45,740 INFO L231 Difference]: Finished difference. Result has 223 places, 273 transitions, 4530 flow [2024-10-13 07:06:45,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4530, PETRI_PLACES=223, PETRI_TRANSITIONS=273} [2024-10-13 07:06:45,741 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 197 predicate places. [2024-10-13 07:06:45,743 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 273 transitions, 4530 flow [2024-10-13 07:06:45,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:45,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:45,743 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:45,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 07:06:45,744 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:45,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash -107817026, now seen corresponding path program 15 times [2024-10-13 07:06:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338604319] [2024-10-13 07:06:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338604319] [2024-10-13 07:06:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338604319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:46,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:46,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239368208] [2024-10-13 07:06:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:46,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:46,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:46,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:46,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 273 transitions, 4530 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:46,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:46,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:46,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:47,133 INFO L124 PetriNetUnfolderBase]: 1939/3560 cut-off events. [2024-10-13 07:06:47,134 INFO L125 PetriNetUnfolderBase]: For 27091/27091 co-relation queries the response was YES. [2024-10-13 07:06:47,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18143 conditions, 3560 events. 1939/3560 cut-off events. For 27091/27091 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 23657 event pairs, 237 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 18012. Up to 722 conditions per place. [2024-10-13 07:06:47,227 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 209 selfloop transitions, 143 changer transitions 8/361 dead transitions. [2024-10-13 07:06:47,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 361 transitions, 5590 flow [2024-10-13 07:06:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 07:06:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 07:06:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 229 transitions. [2024-10-13 07:06:47,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38945578231292516 [2024-10-13 07:06:47,229 INFO L175 Difference]: Start difference. First operand has 223 places, 273 transitions, 4530 flow. Second operand 21 states and 229 transitions. [2024-10-13 07:06:47,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 361 transitions, 5590 flow [2024-10-13 07:06:47,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 361 transitions, 5267 flow, removed 91 selfloop flow, removed 10 redundant places. [2024-10-13 07:06:47,369 INFO L231 Difference]: Finished difference. Result has 234 places, 273 transitions, 4536 flow [2024-10-13 07:06:47,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4239, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4536, PETRI_PLACES=234, PETRI_TRANSITIONS=273} [2024-10-13 07:06:47,370 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 208 predicate places. [2024-10-13 07:06:47,370 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 273 transitions, 4536 flow [2024-10-13 07:06:47,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:47,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:47,370 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:47,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 07:06:47,370 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:47,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash -643046828, now seen corresponding path program 16 times [2024-10-13 07:06:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:47,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859333073] [2024-10-13 07:06:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:47,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:47,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859333073] [2024-10-13 07:06:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859333073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:47,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:47,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:47,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344585791] [2024-10-13 07:06:47,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:47,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:47,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:47,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:47,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 273 transitions, 4536 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:47,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:47,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:47,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:49,074 INFO L124 PetriNetUnfolderBase]: 2071/3811 cut-off events. [2024-10-13 07:06:49,074 INFO L125 PetriNetUnfolderBase]: For 29562/29562 co-relation queries the response was YES. [2024-10-13 07:06:49,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19543 conditions, 3811 events. 2071/3811 cut-off events. For 29562/29562 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 25665 event pairs, 140 based on Foata normal form. 1/3812 useless extension candidates. Maximal degree in co-relation 19415. Up to 657 conditions per place. [2024-10-13 07:06:49,106 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 168 selfloop transitions, 230 changer transitions 7/406 dead transitions. [2024-10-13 07:06:49,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 406 transitions, 6236 flow [2024-10-13 07:06:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 07:06:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 07:06:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 283 transitions. [2024-10-13 07:06:49,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4042857142857143 [2024-10-13 07:06:49,108 INFO L175 Difference]: Start difference. First operand has 234 places, 273 transitions, 4536 flow. Second operand 25 states and 283 transitions. [2024-10-13 07:06:49,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 406 transitions, 6236 flow [2024-10-13 07:06:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 406 transitions, 5901 flow, removed 18 selfloop flow, removed 18 redundant places. [2024-10-13 07:06:49,227 INFO L231 Difference]: Finished difference. Result has 249 places, 302 transitions, 5325 flow [2024-10-13 07:06:49,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4261, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5325, PETRI_PLACES=249, PETRI_TRANSITIONS=302} [2024-10-13 07:06:49,228 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 223 predicate places. [2024-10-13 07:06:49,228 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 302 transitions, 5325 flow [2024-10-13 07:06:49,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:49,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:49,228 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:49,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 07:06:49,229 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:49,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1509102896, now seen corresponding path program 17 times [2024-10-13 07:06:49,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:49,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159595013] [2024-10-13 07:06:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:49,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159595013] [2024-10-13 07:06:49,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159595013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:49,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139381588] [2024-10-13 07:06:49,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:49,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:49,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:49,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:49,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 302 transitions, 5325 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:49,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:49,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:49,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:50,757 INFO L124 PetriNetUnfolderBase]: 2191/4032 cut-off events. [2024-10-13 07:06:50,757 INFO L125 PetriNetUnfolderBase]: For 33249/33249 co-relation queries the response was YES. [2024-10-13 07:06:50,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21490 conditions, 4032 events. 2191/4032 cut-off events. For 33249/33249 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27552 event pairs, 266 based on Foata normal form. 1/4033 useless extension candidates. Maximal degree in co-relation 21354. Up to 1058 conditions per place. [2024-10-13 07:06:50,786 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 206 selfloop transitions, 200 changer transitions 8/415 dead transitions. [2024-10-13 07:06:50,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 415 transitions, 6795 flow [2024-10-13 07:06:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 07:06:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 07:06:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 260 transitions. [2024-10-13 07:06:50,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40372670807453415 [2024-10-13 07:06:50,787 INFO L175 Difference]: Start difference. First operand has 249 places, 302 transitions, 5325 flow. Second operand 23 states and 260 transitions. [2024-10-13 07:06:50,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 415 transitions, 6795 flow [2024-10-13 07:06:50,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 415 transitions, 6661 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-10-13 07:06:50,903 INFO L231 Difference]: Finished difference. Result has 270 places, 317 transitions, 5961 flow [2024-10-13 07:06:50,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5218, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5961, PETRI_PLACES=270, PETRI_TRANSITIONS=317} [2024-10-13 07:06:50,904 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 244 predicate places. [2024-10-13 07:06:50,904 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 317 transitions, 5961 flow [2024-10-13 07:06:50,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:50,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:50,904 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:50,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 07:06:50,904 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:50,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:50,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1845366064, now seen corresponding path program 18 times [2024-10-13 07:06:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:50,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466098247] [2024-10-13 07:06:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:51,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466098247] [2024-10-13 07:06:51,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466098247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:51,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886187742] [2024-10-13 07:06:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:51,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:51,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:51,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 317 transitions, 5961 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:51,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:51,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:51,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:52,550 INFO L124 PetriNetUnfolderBase]: 2239/4106 cut-off events. [2024-10-13 07:06:52,550 INFO L125 PetriNetUnfolderBase]: For 36839/36839 co-relation queries the response was YES. [2024-10-13 07:06:52,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22613 conditions, 4106 events. 2239/4106 cut-off events. For 36839/36839 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 28041 event pairs, 282 based on Foata normal form. 5/4111 useless extension candidates. Maximal degree in co-relation 22473. Up to 1044 conditions per place. [2024-10-13 07:06:52,582 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 251 selfloop transitions, 172 changer transitions 9/433 dead transitions. [2024-10-13 07:06:52,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 433 transitions, 7590 flow [2024-10-13 07:06:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 07:06:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 07:06:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 244 transitions. [2024-10-13 07:06:52,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-10-13 07:06:52,583 INFO L175 Difference]: Start difference. First operand has 270 places, 317 transitions, 5961 flow. Second operand 22 states and 244 transitions. [2024-10-13 07:06:52,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 433 transitions, 7590 flow [2024-10-13 07:06:52,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 433 transitions, 7181 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-10-13 07:06:52,718 INFO L231 Difference]: Finished difference. Result has 282 places, 330 transitions, 6303 flow [2024-10-13 07:06:52,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5616, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6303, PETRI_PLACES=282, PETRI_TRANSITIONS=330} [2024-10-13 07:06:52,719 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 256 predicate places. [2024-10-13 07:06:52,719 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 330 transitions, 6303 flow [2024-10-13 07:06:52,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:52,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:52,720 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:52,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-13 07:06:52,720 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:52,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash -21205396, now seen corresponding path program 19 times [2024-10-13 07:06:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:52,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894961873] [2024-10-13 07:06:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:52,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:53,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894961873] [2024-10-13 07:06:53,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894961873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:53,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:53,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:53,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708621228] [2024-10-13 07:06:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:53,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:53,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:53,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:53,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:53,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:53,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 330 transitions, 6303 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:53,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:53,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:53,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:54,654 INFO L124 PetriNetUnfolderBase]: 2234/4101 cut-off events. [2024-10-13 07:06:54,655 INFO L125 PetriNetUnfolderBase]: For 38366/38366 co-relation queries the response was YES. [2024-10-13 07:06:54,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22957 conditions, 4101 events. 2234/4101 cut-off events. For 38366/38366 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27916 event pairs, 135 based on Foata normal form. 1/4102 useless extension candidates. Maximal degree in co-relation 22812. Up to 737 conditions per place. [2024-10-13 07:06:54,687 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 171 selfloop transitions, 261 changer transitions 7/440 dead transitions. [2024-10-13 07:06:54,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 440 transitions, 7591 flow [2024-10-13 07:06:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 07:06:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 07:06:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2024-10-13 07:06:54,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3637566137566138 [2024-10-13 07:06:54,689 INFO L175 Difference]: Start difference. First operand has 282 places, 330 transitions, 6303 flow. Second operand 27 states and 275 transitions. [2024-10-13 07:06:54,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 440 transitions, 7591 flow [2024-10-13 07:06:54,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 440 transitions, 7229 flow, removed 29 selfloop flow, removed 17 redundant places. [2024-10-13 07:06:54,827 INFO L231 Difference]: Finished difference. Result has 293 places, 333 transitions, 6531 flow [2024-10-13 07:06:54,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5959, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6531, PETRI_PLACES=293, PETRI_TRANSITIONS=333} [2024-10-13 07:06:54,828 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 267 predicate places. [2024-10-13 07:06:54,828 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 333 transitions, 6531 flow [2024-10-13 07:06:54,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:54,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:54,829 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:54,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-13 07:06:54,829 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:54,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1064565566, now seen corresponding path program 20 times [2024-10-13 07:06:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:54,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861386431] [2024-10-13 07:06:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:54,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:55,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861386431] [2024-10-13 07:06:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861386431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:55,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:55,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:55,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94713328] [2024-10-13 07:06:55,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:55,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:55,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:55,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 333 transitions, 6531 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:55,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:55,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:55,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:56,346 INFO L124 PetriNetUnfolderBase]: 2250/4138 cut-off events. [2024-10-13 07:06:56,346 INFO L125 PetriNetUnfolderBase]: For 39915/39915 co-relation queries the response was YES. [2024-10-13 07:06:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23443 conditions, 4138 events. 2250/4138 cut-off events. For 39915/39915 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 28267 event pairs, 282 based on Foata normal form. 1/4139 useless extension candidates. Maximal degree in co-relation 23299. Up to 1014 conditions per place. [2024-10-13 07:06:56,378 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 214 selfloop transitions, 188 changer transitions 7/410 dead transitions. [2024-10-13 07:06:56,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 410 transitions, 7664 flow [2024-10-13 07:06:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 07:06:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 07:06:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 203 transitions. [2024-10-13 07:06:56,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2024-10-13 07:06:56,380 INFO L175 Difference]: Start difference. First operand has 293 places, 333 transitions, 6531 flow. Second operand 19 states and 203 transitions. [2024-10-13 07:06:56,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 410 transitions, 7664 flow [2024-10-13 07:06:56,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 410 transitions, 7002 flow, removed 37 selfloop flow, removed 28 redundant places. [2024-10-13 07:06:56,519 INFO L231 Difference]: Finished difference. Result has 285 places, 335 transitions, 6319 flow [2024-10-13 07:06:56,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6319, PETRI_PLACES=285, PETRI_TRANSITIONS=335} [2024-10-13 07:06:56,520 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 259 predicate places. [2024-10-13 07:06:56,520 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 335 transitions, 6319 flow [2024-10-13 07:06:56,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:56,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:56,520 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:56,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-13 07:06:56,520 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:56,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1038790082, now seen corresponding path program 21 times [2024-10-13 07:06:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:56,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993792636] [2024-10-13 07:06:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:56,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993792636] [2024-10-13 07:06:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993792636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:57,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:57,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918085656] [2024-10-13 07:06:57,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:57,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:57,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:57,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 335 transitions, 6319 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:57,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:57,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:57,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:58,743 INFO L124 PetriNetUnfolderBase]: 2241/4116 cut-off events. [2024-10-13 07:06:58,743 INFO L125 PetriNetUnfolderBase]: For 36387/36387 co-relation queries the response was YES. [2024-10-13 07:06:58,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22531 conditions, 4116 events. 2241/4116 cut-off events. For 36387/36387 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27973 event pairs, 61 based on Foata normal form. 1/4117 useless extension candidates. Maximal degree in co-relation 22395. Up to 713 conditions per place. [2024-10-13 07:06:58,770 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 158 selfloop transitions, 279 changer transitions 7/445 dead transitions. [2024-10-13 07:06:58,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 445 transitions, 7560 flow [2024-10-13 07:06:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-13 07:06:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-13 07:06:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 302 transitions. [2024-10-13 07:06:58,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.347926267281106 [2024-10-13 07:06:58,772 INFO L175 Difference]: Start difference. First operand has 285 places, 335 transitions, 6319 flow. Second operand 31 states and 302 transitions. [2024-10-13 07:06:58,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 445 transitions, 7560 flow [2024-10-13 07:06:58,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 445 transitions, 7174 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-10-13 07:06:58,900 INFO L231 Difference]: Finished difference. Result has 300 places, 334 transitions, 6492 flow [2024-10-13 07:06:58,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5945, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=6492, PETRI_PLACES=300, PETRI_TRANSITIONS=334} [2024-10-13 07:06:58,901 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 274 predicate places. [2024-10-13 07:06:58,901 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 334 transitions, 6492 flow [2024-10-13 07:06:58,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:58,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:58,902 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:58,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-13 07:06:58,902 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:06:58,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:58,902 INFO L85 PathProgramCache]: Analyzing trace with hash -617271344, now seen corresponding path program 22 times [2024-10-13 07:06:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:58,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011412028] [2024-10-13 07:06:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:58,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:06:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011412028] [2024-10-13 07:06:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011412028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:59,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-13 07:06:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103021370] [2024-10-13 07:06:59,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:59,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:06:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:06:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:59,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:06:59,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 334 transitions, 6492 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:59,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:59,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:06:59,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:00,424 INFO L124 PetriNetUnfolderBase]: 2232/4094 cut-off events. [2024-10-13 07:07:00,424 INFO L125 PetriNetUnfolderBase]: For 39558/39558 co-relation queries the response was YES. [2024-10-13 07:07:00,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22870 conditions, 4094 events. 2232/4094 cut-off events. For 39558/39558 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27930 event pairs, 304 based on Foata normal form. 1/4095 useless extension candidates. Maximal degree in co-relation 22735. Up to 1024 conditions per place. [2024-10-13 07:07:00,453 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 185 selfloop transitions, 210 changer transitions 7/403 dead transitions. [2024-10-13 07:07:00,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 403 transitions, 7522 flow [2024-10-13 07:07:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 07:07:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 07:07:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 211 transitions. [2024-10-13 07:07:00,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3767857142857143 [2024-10-13 07:07:00,454 INFO L175 Difference]: Start difference. First operand has 300 places, 334 transitions, 6492 flow. Second operand 20 states and 211 transitions. [2024-10-13 07:07:00,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 403 transitions, 7522 flow [2024-10-13 07:07:00,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 403 transitions, 6789 flow, removed 5 selfloop flow, removed 34 redundant places. [2024-10-13 07:07:00,578 INFO L231 Difference]: Finished difference. Result has 285 places, 333 transitions, 6178 flow [2024-10-13 07:07:00,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5767, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6178, PETRI_PLACES=285, PETRI_TRANSITIONS=333} [2024-10-13 07:07:00,578 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 259 predicate places. [2024-10-13 07:07:00,579 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 333 transitions, 6178 flow [2024-10-13 07:07:00,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:00,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:00,579 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:00,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-13 07:07:00,579 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:00,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:00,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1684581256, now seen corresponding path program 1 times [2024-10-13 07:07:00,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:00,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073861573] [2024-10-13 07:07:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:00,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073861573] [2024-10-13 07:07:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073861573] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21105243] [2024-10-13 07:07:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:00,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:00,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:00,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:00,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:07:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:00,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:07:00,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:00,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21105243] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:00,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 07:07:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990698695] [2024-10-13 07:07:00,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:00,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:07:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:07:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:07:00,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:00,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 333 transitions, 6178 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:00,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:00,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:00,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:01,745 INFO L124 PetriNetUnfolderBase]: 2492/4486 cut-off events. [2024-10-13 07:07:01,745 INFO L125 PetriNetUnfolderBase]: For 42222/42222 co-relation queries the response was YES. [2024-10-13 07:07:01,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25848 conditions, 4486 events. 2492/4486 cut-off events. For 42222/42222 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29075 event pairs, 719 based on Foata normal form. 338/4824 useless extension candidates. Maximal degree in co-relation 25715. Up to 1336 conditions per place. [2024-10-13 07:07:01,781 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 465 selfloop transitions, 95 changer transitions 0/561 dead transitions. [2024-10-13 07:07:01,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 561 transitions, 10607 flow [2024-10-13 07:07:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:07:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:07:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-10-13 07:07:01,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-10-13 07:07:01,783 INFO L175 Difference]: Start difference. First operand has 285 places, 333 transitions, 6178 flow. Second operand 7 states and 120 transitions. [2024-10-13 07:07:01,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 561 transitions, 10607 flow [2024-10-13 07:07:01,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 561 transitions, 9949 flow, removed 10 selfloop flow, removed 20 redundant places. [2024-10-13 07:07:01,947 INFO L231 Difference]: Finished difference. Result has 274 places, 364 transitions, 6523 flow [2024-10-13 07:07:01,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5768, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6523, PETRI_PLACES=274, PETRI_TRANSITIONS=364} [2024-10-13 07:07:01,948 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 248 predicate places. [2024-10-13 07:07:01,948 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 364 transitions, 6523 flow [2024-10-13 07:07:01,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:01,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:01,949 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:01,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 07:07:02,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:02,155 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:02,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1587222423, now seen corresponding path program 1 times [2024-10-13 07:07:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524441302] [2024-10-13 07:07:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524441302] [2024-10-13 07:07:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524441302] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387285709] [2024-10-13 07:07:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:02,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:02,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:02,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:02,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:07:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:02,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:07:02,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:02,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:02,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387285709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:02,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:02,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-13 07:07:02,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636052940] [2024-10-13 07:07:02,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:02,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:07:02,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:07:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:07:02,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:02,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 364 transitions, 6523 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:02,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:02,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:02,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:03,535 INFO L124 PetriNetUnfolderBase]: 3372/5995 cut-off events. [2024-10-13 07:07:03,535 INFO L125 PetriNetUnfolderBase]: For 45866/45866 co-relation queries the response was YES. [2024-10-13 07:07:03,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34846 conditions, 5995 events. 3372/5995 cut-off events. For 45866/45866 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 38463 event pairs, 490 based on Foata normal form. 521/6516 useless extension candidates. Maximal degree in co-relation 34714. Up to 1568 conditions per place. [2024-10-13 07:07:03,576 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 544 selfloop transitions, 83 changer transitions 1/629 dead transitions. [2024-10-13 07:07:03,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 629 transitions, 11775 flow [2024-10-13 07:07:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 07:07:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 07:07:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-10-13 07:07:03,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-10-13 07:07:03,577 INFO L175 Difference]: Start difference. First operand has 274 places, 364 transitions, 6523 flow. Second operand 8 states and 113 transitions. [2024-10-13 07:07:03,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 629 transitions, 11775 flow [2024-10-13 07:07:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 629 transitions, 11555 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-10-13 07:07:03,817 INFO L231 Difference]: Finished difference. Result has 283 places, 392 transitions, 7059 flow [2024-10-13 07:07:03,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7059, PETRI_PLACES=283, PETRI_TRANSITIONS=392} [2024-10-13 07:07:03,818 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 257 predicate places. [2024-10-13 07:07:03,818 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 392 transitions, 7059 flow [2024-10-13 07:07:03,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:03,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:03,818 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:03,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 07:07:04,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:04,023 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:04,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:04,023 INFO L85 PathProgramCache]: Analyzing trace with hash 726834522, now seen corresponding path program 1 times [2024-10-13 07:07:04,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:04,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622303918] [2024-10-13 07:07:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:04,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622303918] [2024-10-13 07:07:04,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622303918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795309033] [2024-10-13 07:07:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:04,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:04,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:04,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:07:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:04,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 07:07:04,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:04,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:04,721 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:07:04,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:07:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:04,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795309033] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:04,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:04,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-10-13 07:07:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384589814] [2024-10-13 07:07:04,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:04,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:07:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:07:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:07:04,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:04,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 392 transitions, 7059 flow. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:04,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:04,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:04,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:06,146 INFO L124 PetriNetUnfolderBase]: 3451/6126 cut-off events. [2024-10-13 07:07:06,146 INFO L125 PetriNetUnfolderBase]: For 57819/57819 co-relation queries the response was YES. [2024-10-13 07:07:06,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37536 conditions, 6126 events. 3451/6126 cut-off events. For 57819/57819 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 39485 event pairs, 350 based on Foata normal form. 56/6182 useless extension candidates. Maximal degree in co-relation 37399. Up to 1443 conditions per place. [2024-10-13 07:07:06,222 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 175 selfloop transitions, 313 changer transitions 1/490 dead transitions. [2024-10-13 07:07:06,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 490 transitions, 8928 flow [2024-10-13 07:07:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 07:07:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 07:07:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 186 transitions. [2024-10-13 07:07:06,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-10-13 07:07:06,224 INFO L175 Difference]: Start difference. First operand has 283 places, 392 transitions, 7059 flow. Second operand 18 states and 186 transitions. [2024-10-13 07:07:06,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 490 transitions, 8928 flow [2024-10-13 07:07:06,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 490 transitions, 8758 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-13 07:07:06,589 INFO L231 Difference]: Finished difference. Result has 298 places, 423 transitions, 8167 flow [2024-10-13 07:07:06,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=6865, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8167, PETRI_PLACES=298, PETRI_TRANSITIONS=423} [2024-10-13 07:07:06,590 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2024-10-13 07:07:06,590 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 423 transitions, 8167 flow [2024-10-13 07:07:06,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:06,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:06,591 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:06,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 07:07:06,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-13 07:07:06,791 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:06,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash 866801083, now seen corresponding path program 1 times [2024-10-13 07:07:06,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:06,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438452226] [2024-10-13 07:07:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438452226] [2024-10-13 07:07:07,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438452226] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501252008] [2024-10-13 07:07:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:07,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:07,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:07,238 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:07,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 07:07:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:07,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 07:07:07,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:07,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:07:07,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-10-13 07:07:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:07,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:07,672 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:07:07,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 87 [2024-10-13 07:07:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501252008] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:07,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:07:07,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2024-10-13 07:07:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673378206] [2024-10-13 07:07:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:07,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:07:07,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:07:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:07:07,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:07,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 423 transitions, 8167 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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) [2024-10-13 07:07:07,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:07,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:07,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:08,938 INFO L124 PetriNetUnfolderBase]: 3865/7026 cut-off events. [2024-10-13 07:07:08,939 INFO L125 PetriNetUnfolderBase]: For 65882/65882 co-relation queries the response was YES. [2024-10-13 07:07:08,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43530 conditions, 7026 events. 3865/7026 cut-off events. For 65882/65882 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 47993 event pairs, 802 based on Foata normal form. 30/7056 useless extension candidates. Maximal degree in co-relation 43389. Up to 2309 conditions per place. [2024-10-13 07:07:09,007 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 296 selfloop transitions, 199 changer transitions 0/496 dead transitions. [2024-10-13 07:07:09,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 496 transitions, 9786 flow [2024-10-13 07:07:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:07:09,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:07:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-10-13 07:07:09,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-10-13 07:07:09,009 INFO L175 Difference]: Start difference. First operand has 298 places, 423 transitions, 8167 flow. Second operand 11 states and 136 transitions. [2024-10-13 07:07:09,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 496 transitions, 9786 flow [2024-10-13 07:07:09,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 496 transitions, 9683 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-13 07:07:09,509 INFO L231 Difference]: Finished difference. Result has 306 places, 435 transitions, 8749 flow [2024-10-13 07:07:09,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8025, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8749, PETRI_PLACES=306, PETRI_TRANSITIONS=435} [2024-10-13 07:07:09,509 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 280 predicate places. [2024-10-13 07:07:09,510 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 435 transitions, 8749 flow [2024-10-13 07:07:09,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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) [2024-10-13 07:07:09,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:09,510 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:09,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 07:07:09,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:09,711 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:09,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash 152562718, now seen corresponding path program 2 times [2024-10-13 07:07:09,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829144158] [2024-10-13 07:07:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:09,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:10,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:10,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829144158] [2024-10-13 07:07:10,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829144158] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026083958] [2024-10-13 07:07:10,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:07:10,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:10,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:10,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:10,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 07:07:10,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:07:10,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:07:10,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:07:10,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:10,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:07:10,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 70 [2024-10-13 07:07:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:10,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:10,847 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:07:10,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:07:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026083958] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:10,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:10,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 18 [2024-10-13 07:07:10,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754957411] [2024-10-13 07:07:10,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:10,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 07:07:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 07:07:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:07:10,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:10,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 435 transitions, 8749 flow. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:10,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:10,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:10,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:13,709 INFO L124 PetriNetUnfolderBase]: 5292/9528 cut-off events. [2024-10-13 07:07:13,709 INFO L125 PetriNetUnfolderBase]: For 91467/91467 co-relation queries the response was YES. [2024-10-13 07:07:13,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61490 conditions, 9528 events. 5292/9528 cut-off events. For 91467/91467 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 68298 event pairs, 875 based on Foata normal form. 34/9562 useless extension candidates. Maximal degree in co-relation 61350. Up to 2303 conditions per place. [2024-10-13 07:07:13,784 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 268 selfloop transitions, 366 changer transitions 6/641 dead transitions. [2024-10-13 07:07:13,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 641 transitions, 12067 flow [2024-10-13 07:07:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-13 07:07:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-13 07:07:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 325 transitions. [2024-10-13 07:07:13,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3627232142857143 [2024-10-13 07:07:13,785 INFO L175 Difference]: Start difference. First operand has 306 places, 435 transitions, 8749 flow. Second operand 32 states and 325 transitions. [2024-10-13 07:07:13,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 641 transitions, 12067 flow [2024-10-13 07:07:14,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 641 transitions, 11744 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-13 07:07:14,269 INFO L231 Difference]: Finished difference. Result has 342 places, 511 transitions, 10933 flow [2024-10-13 07:07:14,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=8443, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=10933, PETRI_PLACES=342, PETRI_TRANSITIONS=511} [2024-10-13 07:07:14,270 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2024-10-13 07:07:14,270 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 511 transitions, 10933 flow [2024-10-13 07:07:14,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:14,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:14,270 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:14,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 07:07:14,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-13 07:07:14,471 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:14,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:14,471 INFO L85 PathProgramCache]: Analyzing trace with hash 763083020, now seen corresponding path program 3 times [2024-10-13 07:07:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001380375] [2024-10-13 07:07:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001380375] [2024-10-13 07:07:14,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001380375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525121747] [2024-10-13 07:07:14,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:07:14,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:14,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:14,934 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:14,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 07:07:15,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:07:15,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:07:15,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:07:15,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:15,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:15,303 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:07:15,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:07:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525121747] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:15,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-10-13 07:07:15,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183491840] [2024-10-13 07:07:15,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:15,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:07:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:07:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:07:15,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:15,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 511 transitions, 10933 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:15,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:15,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:15,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:18,466 INFO L124 PetriNetUnfolderBase]: 7057/12484 cut-off events. [2024-10-13 07:07:18,466 INFO L125 PetriNetUnfolderBase]: For 141338/141338 co-relation queries the response was YES. [2024-10-13 07:07:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87076 conditions, 12484 events. 7057/12484 cut-off events. For 141338/141338 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 91661 event pairs, 1299 based on Foata normal form. 45/12529 useless extension candidates. Maximal degree in co-relation 86925. Up to 3308 conditions per place. [2024-10-13 07:07:18,568 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 296 selfloop transitions, 430 changer transitions 3/730 dead transitions. [2024-10-13 07:07:18,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 730 transitions, 15229 flow [2024-10-13 07:07:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 07:07:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 07:07:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 267 transitions. [2024-10-13 07:07:18,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-10-13 07:07:18,570 INFO L175 Difference]: Start difference. First operand has 342 places, 511 transitions, 10933 flow. Second operand 24 states and 267 transitions. [2024-10-13 07:07:18,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 730 transitions, 15229 flow [2024-10-13 07:07:19,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 730 transitions, 14746 flow, removed 39 selfloop flow, removed 17 redundant places. [2024-10-13 07:07:19,703 INFO L231 Difference]: Finished difference. Result has 355 places, 622 transitions, 14278 flow [2024-10-13 07:07:19,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=10432, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=14278, PETRI_PLACES=355, PETRI_TRANSITIONS=622} [2024-10-13 07:07:19,704 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 329 predicate places. [2024-10-13 07:07:19,704 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 622 transitions, 14278 flow [2024-10-13 07:07:19,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:19,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:19,704 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:19,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 07:07:19,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-13 07:07:19,905 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:19,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash -154774815, now seen corresponding path program 2 times [2024-10-13 07:07:19,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:19,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455379319] [2024-10-13 07:07:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:20,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:20,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455379319] [2024-10-13 07:07:20,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455379319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:07:20,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:07:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:07:20,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559081296] [2024-10-13 07:07:20,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:07:20,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:07:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:20,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:07:20,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:07:20,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:20,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 622 transitions, 14278 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:20,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:20,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:20,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:23,794 INFO L124 PetriNetUnfolderBase]: 6977/12317 cut-off events. [2024-10-13 07:07:23,794 INFO L125 PetriNetUnfolderBase]: For 160925/160925 co-relation queries the response was YES. [2024-10-13 07:07:23,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91588 conditions, 12317 events. 6977/12317 cut-off events. For 160925/160925 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 89833 event pairs, 1873 based on Foata normal form. 5/12322 useless extension candidates. Maximal degree in co-relation 91432. Up to 5364 conditions per place. [2024-10-13 07:07:23,913 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 358 selfloop transitions, 291 changer transitions 4/654 dead transitions. [2024-10-13 07:07:23,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 654 transitions, 15672 flow [2024-10-13 07:07:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:07:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:07:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-10-13 07:07:23,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2024-10-13 07:07:23,914 INFO L175 Difference]: Start difference. First operand has 355 places, 622 transitions, 14278 flow. Second operand 12 states and 122 transitions. [2024-10-13 07:07:23,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 654 transitions, 15672 flow [2024-10-13 07:07:24,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 654 transitions, 15281 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-10-13 07:07:24,979 INFO L231 Difference]: Finished difference. Result has 354 places, 618 transitions, 14391 flow [2024-10-13 07:07:24,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13832, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14391, PETRI_PLACES=354, PETRI_TRANSITIONS=618} [2024-10-13 07:07:24,980 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 328 predicate places. [2024-10-13 07:07:24,980 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 618 transitions, 14391 flow [2024-10-13 07:07:24,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:24,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:24,981 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:24,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-13 07:07:24,981 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:24,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 298493033, now seen corresponding path program 3 times [2024-10-13 07:07:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199721478] [2024-10-13 07:07:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:25,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199721478] [2024-10-13 07:07:25,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199721478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442036813] [2024-10-13 07:07:25,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:07:25,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:25,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:25,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 07:07:25,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:07:25,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:07:25,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:07:25,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:25,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:25,741 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:07:25,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-10-13 07:07:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442036813] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:25,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 16 [2024-10-13 07:07:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687919158] [2024-10-13 07:07:25,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:25,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:07:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:07:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:07:25,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2024-10-13 07:07:25,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 618 transitions, 14391 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:25,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:25,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2024-10-13 07:07:25,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:07:29,478 INFO L124 PetriNetUnfolderBase]: 7198/12803 cut-off events. [2024-10-13 07:07:29,478 INFO L125 PetriNetUnfolderBase]: For 177124/177124 co-relation queries the response was YES. [2024-10-13 07:07:29,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94423 conditions, 12803 events. 7198/12803 cut-off events. For 177124/177124 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 95587 event pairs, 1240 based on Foata normal form. 52/12855 useless extension candidates. Maximal degree in co-relation 94268. Up to 4196 conditions per place. [2024-10-13 07:07:29,623 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 376 selfloop transitions, 349 changer transitions 0/726 dead transitions. [2024-10-13 07:07:29,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 726 transitions, 17010 flow [2024-10-13 07:07:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:07:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:07:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 178 transitions. [2024-10-13 07:07:29,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-10-13 07:07:29,625 INFO L175 Difference]: Start difference. First operand has 354 places, 618 transitions, 14391 flow. Second operand 16 states and 178 transitions. [2024-10-13 07:07:29,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 726 transitions, 17010 flow [2024-10-13 07:07:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 726 transitions, 16346 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-10-13 07:07:31,042 INFO L231 Difference]: Finished difference. Result has 359 places, 657 transitions, 15426 flow [2024-10-13 07:07:31,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=13727, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=15426, PETRI_PLACES=359, PETRI_TRANSITIONS=657} [2024-10-13 07:07:31,043 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 333 predicate places. [2024-10-13 07:07:31,043 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 657 transitions, 15426 flow [2024-10-13 07:07:31,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:07:31,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:07:31,043 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:07:31,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 07:07:31,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-13 07:07:31,244 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:07:31,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:07:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1486478912, now seen corresponding path program 4 times [2024-10-13 07:07:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:07:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128686860] [2024-10-13 07:07:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:07:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:07:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:07:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:07:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128686860] [2024-10-13 07:07:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128686860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:07:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963807553] [2024-10-13 07:07:31,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:07:31,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:07:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:07:31,639 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:07:31,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 07:07:31,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:07:31,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:07:31,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 07:07:31,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:07:31,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:07:31,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 74 [2024-10-13 07:07:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-13 07:07:31,898 INFO L311 TraceCheckSpWp]: Computing backward predicates...