./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-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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-word-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:37:07,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:37:07,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:37:07,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:37:07,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:37:07,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:37:07,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:37:07,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:37:07,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:37:07,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:37:07,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:37:07,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:37:07,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:37:07,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:37:07,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:37:07,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:37:07,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:37:07,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:37:07,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:37:07,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:37:07,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:37:07,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:37:07,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:37:07,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:37:07,578 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:37:07,578 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:37:07,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:37:07,578 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:37:07,578 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:37:07,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:37:07,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:37:07,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:37:07,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:37:07,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:37:07,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:37:07,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:37:07,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:37:07,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:37:07,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:37:07,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:37:07,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:37:07,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:37:07,583 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-11-20 09:37:07,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:37:07,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:37:07,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:37:07,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:37:07,902 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:37:07,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-11-20 09:37:09,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:37:09,581 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:37:09,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-11-20 09:37:09,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a340a56/754eb1c4bf854bb7b7b99629d3224f8b/FLAG6b755feec [2024-11-20 09:37:09,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a340a56/754eb1c4bf854bb7b7b99629d3224f8b [2024-11-20 09:37:09,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:37:09,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:37:09,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:37:09,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:37:09,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:37:09,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:09,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24014328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09, skipping insertion in model container [2024-11-20 09:37:09,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:09,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:37:09,874 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-20 09:37:09,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:37:09,901 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:37:09,937 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-20 09:37:09,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:37:09,975 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:37:09,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09 WrapperNode [2024-11-20 09:37:09,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:37:09,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:37:09,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:37:09,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:37:09,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:09,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,018 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 165 [2024-11-20 09:37:10,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:37:10,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:37:10,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:37:10,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:37:10,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,066 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-20 09:37:10,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:37:10,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:37:10,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:37:10,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:37:10,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (1/1) ... [2024-11-20 09:37:10,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:37:10,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:37:10,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:37:10,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:37:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:37:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:37:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:37:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:37:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:37:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:37:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:37:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:37:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:37:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:37:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:37:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:37:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:37:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:37:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:37:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:37:10,199 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:37:10,346 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:37:10,349 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:37:10,781 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:37:10,782 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:37:11,134 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:37:11,135 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 09:37:11,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:11 BoogieIcfgContainer [2024-11-20 09:37:11,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:37:11,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:37:11,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:37:11,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:37:11,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:37:09" (1/3) ... [2024-11-20 09:37:11,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4450a418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:37:11, skipping insertion in model container [2024-11-20 09:37:11,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:09" (2/3) ... [2024-11-20 09:37:11,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4450a418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:37:11, skipping insertion in model container [2024-11-20 09:37:11,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:11" (3/3) ... [2024-11-20 09:37:11,148 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-11-20 09:37:11,165 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:37:11,166 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:37:11,166 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:37:11,227 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:37:11,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-20 09:37:11,302 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-20 09:37:11,303 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:37:11,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-20 09:37:11,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-20 09:37:11,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-20 09:37:11,324 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:37:11,335 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;@725e896f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:37:11,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:37:11,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:37:11,360 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-20 09:37:11,361 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:37:11,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:11,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:11,362 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:11,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2139187037, now seen corresponding path program 1 times [2024-11-20 09:37:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:11,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634859301] [2024-11-20 09:37:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:12,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634859301] [2024-11-20 09:37:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634859301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:12,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:12,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83642524] [2024-11-20 09:37:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:12,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:12,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:12,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:12,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:12,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:12,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:13,104 INFO L124 PetriNetUnfolderBase]: 4194/5650 cut-off events. [2024-11-20 09:37:13,104 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2024-11-20 09:37:13,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11530 conditions, 5650 events. 4194/5650 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23579 event pairs, 1230 based on Foata normal form. 1/4162 useless extension candidates. Maximal degree in co-relation 10708. Up to 2621 conditions per place. [2024-11-20 09:37:13,148 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 93 selfloop transitions, 13 changer transitions 1/108 dead transitions. [2024-11-20 09:37:13,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 108 transitions, 475 flow [2024-11-20 09:37:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-20 09:37:13,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-20 09:37:13,163 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 5 states and 128 transitions. [2024-11-20 09:37:13,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 108 transitions, 475 flow [2024-11-20 09:37:13,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 108 transitions, 445 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:37:13,182 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 174 flow [2024-11-20 09:37:13,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2024-11-20 09:37:13,189 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-20 09:37:13,189 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 174 flow [2024-11-20 09:37:13,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:13,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:13,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:13,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:37:13,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:13,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash -251997727, now seen corresponding path program 2 times [2024-11-20 09:37:13,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:13,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123897104] [2024-11-20 09:37:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:13,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123897104] [2024-11-20 09:37:13,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123897104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:13,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:13,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679645882] [2024-11-20 09:37:13,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:13,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:13,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:13,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:13,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:13,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:13,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:13,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:14,350 INFO L124 PetriNetUnfolderBase]: 5362/7396 cut-off events. [2024-11-20 09:37:14,351 INFO L125 PetriNetUnfolderBase]: For 1555/1555 co-relation queries the response was YES. [2024-11-20 09:37:14,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 7396 events. 5362/7396 cut-off events. For 1555/1555 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 34845 event pairs, 2679 based on Foata normal form. 1/6215 useless extension candidates. Maximal degree in co-relation 11899. Up to 5325 conditions per place. [2024-11-20 09:37:14,439 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 107 selfloop transitions, 7 changer transitions 3/118 dead transitions. [2024-11-20 09:37:14,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 118 transitions, 596 flow [2024-11-20 09:37:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-20 09:37:14,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-11-20 09:37:14,441 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 174 flow. Second operand 5 states and 123 transitions. [2024-11-20 09:37:14,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 118 transitions, 596 flow [2024-11-20 09:37:14,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 118 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:37:14,452 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 239 flow [2024-11-20 09:37:14,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-11-20 09:37:14,453 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-11-20 09:37:14,453 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 239 flow [2024-11-20 09:37:14,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:14,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:14,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:14,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:37:14,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:14,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash -864762781, now seen corresponding path program 3 times [2024-11-20 09:37:14,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:14,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832383465] [2024-11-20 09:37:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:14,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:14,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:14,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832383465] [2024-11-20 09:37:14,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832383465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:14,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:14,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:14,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050686545] [2024-11-20 09:37:14,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:14,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:14,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:14,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:14,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:14,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:14,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:14,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:14,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:15,468 INFO L124 PetriNetUnfolderBase]: 6533/9128 cut-off events. [2024-11-20 09:37:15,468 INFO L125 PetriNetUnfolderBase]: For 4945/4945 co-relation queries the response was YES. [2024-11-20 09:37:15,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22776 conditions, 9128 events. 6533/9128 cut-off events. For 4945/4945 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44925 event pairs, 3289 based on Foata normal form. 1/7963 useless extension candidates. Maximal degree in co-relation 16270. Up to 5817 conditions per place. [2024-11-20 09:37:15,532 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 104 selfloop transitions, 17 changer transitions 1/123 dead transitions. [2024-11-20 09:37:15,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 685 flow [2024-11-20 09:37:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-20 09:37:15,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-20 09:37:15,537 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 239 flow. Second operand 5 states and 129 transitions. [2024-11-20 09:37:15,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 685 flow [2024-11-20 09:37:15,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 675 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:15,617 INFO L231 Difference]: Finished difference. Result has 57 places, 70 transitions, 377 flow [2024-11-20 09:37:15,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=57, PETRI_TRANSITIONS=70} [2024-11-20 09:37:15,618 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-11-20 09:37:15,619 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 70 transitions, 377 flow [2024-11-20 09:37:15,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:15,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:15,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:15,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:37:15,620 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:15,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash 357230847, now seen corresponding path program 4 times [2024-11-20 09:37:15,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:15,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110386448] [2024-11-20 09:37:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:15,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:15,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:15,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110386448] [2024-11-20 09:37:15,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110386448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:15,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:15,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:15,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577164353] [2024-11-20 09:37:15,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:15,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:15,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:15,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:15,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:15,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:15,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:15,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:15,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:17,006 INFO L124 PetriNetUnfolderBase]: 7280/10189 cut-off events. [2024-11-20 09:37:17,006 INFO L125 PetriNetUnfolderBase]: For 11173/11173 co-relation queries the response was YES. [2024-11-20 09:37:17,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27719 conditions, 10189 events. 7280/10189 cut-off events. For 11173/11173 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 52283 event pairs, 3488 based on Foata normal form. 1/8862 useless extension candidates. Maximal degree in co-relation 20100. Up to 6616 conditions per place. [2024-11-20 09:37:17,075 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 124 selfloop transitions, 22 changer transitions 1/148 dead transitions. [2024-11-20 09:37:17,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 987 flow [2024-11-20 09:37:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-20 09:37:17,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-20 09:37:17,077 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 377 flow. Second operand 5 states and 131 transitions. [2024-11-20 09:37:17,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 987 flow [2024-11-20 09:37:17,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 947 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-20 09:37:17,229 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 591 flow [2024-11-20 09:37:17,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2024-11-20 09:37:17,230 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-20 09:37:17,230 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 591 flow [2024-11-20 09:37:17,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:17,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:17,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:17,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:37:17,231 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:17,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2126149539, now seen corresponding path program 5 times [2024-11-20 09:37:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:17,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056645819] [2024-11-20 09:37:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056645819] [2024-11-20 09:37:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056645819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:17,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:17,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:17,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673444914] [2024-11-20 09:37:17,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:17,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:17,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:17,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:17,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 591 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:17,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:17,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:17,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:18,523 INFO L124 PetriNetUnfolderBase]: 7280/10187 cut-off events. [2024-11-20 09:37:18,523 INFO L125 PetriNetUnfolderBase]: For 16282/16282 co-relation queries the response was YES. [2024-11-20 09:37:18,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29616 conditions, 10187 events. 7280/10187 cut-off events. For 16282/16282 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 51714 event pairs, 3752 based on Foata normal form. 1/9128 useless extension candidates. Maximal degree in co-relation 28424. Up to 6705 conditions per place. [2024-11-20 09:37:18,585 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 123 selfloop transitions, 11 changer transitions 3/138 dead transitions. [2024-11-20 09:37:18,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 138 transitions, 1037 flow [2024-11-20 09:37:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-20 09:37:18,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-11-20 09:37:18,587 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 591 flow. Second operand 5 states and 121 transitions. [2024-11-20 09:37:18,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 138 transitions, 1037 flow [2024-11-20 09:37:18,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1029 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:18,655 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 616 flow [2024-11-20 09:37:18,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2024-11-20 09:37:18,657 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-11-20 09:37:18,658 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 616 flow [2024-11-20 09:37:18,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:18,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:18,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:18,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:37:18,659 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:18,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1870528389, now seen corresponding path program 6 times [2024-11-20 09:37:18,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:18,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005811303] [2024-11-20 09:37:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:18,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005811303] [2024-11-20 09:37:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005811303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:18,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:18,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171693962] [2024-11-20 09:37:18,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:18,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:18,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:18,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:18,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:18,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:18,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:18,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:18,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:19,947 INFO L124 PetriNetUnfolderBase]: 7463/10420 cut-off events. [2024-11-20 09:37:19,948 INFO L125 PetriNetUnfolderBase]: For 19317/19317 co-relation queries the response was YES. [2024-11-20 09:37:19,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30746 conditions, 10420 events. 7463/10420 cut-off events. For 19317/19317 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 52850 event pairs, 2328 based on Foata normal form. 1/9332 useless extension candidates. Maximal degree in co-relation 30154. Up to 4720 conditions per place. [2024-11-20 09:37:20,117 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 105 selfloop transitions, 45 changer transitions 1/152 dead transitions. [2024-11-20 09:37:20,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 152 transitions, 1179 flow [2024-11-20 09:37:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-20 09:37:20,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-20 09:37:20,119 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 616 flow. Second operand 5 states and 128 transitions. [2024-11-20 09:37:20,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 152 transitions, 1179 flow [2024-11-20 09:37:20,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 152 transitions, 1156 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-20 09:37:20,189 INFO L231 Difference]: Finished difference. Result has 73 places, 100 transitions, 859 flow [2024-11-20 09:37:20,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=859, PETRI_PLACES=73, PETRI_TRANSITIONS=100} [2024-11-20 09:37:20,190 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-20 09:37:20,190 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 100 transitions, 859 flow [2024-11-20 09:37:20,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:20,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:20,191 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:20,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:37:20,192 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:20,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1888763971, now seen corresponding path program 1 times [2024-11-20 09:37:20,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:20,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722942820] [2024-11-20 09:37:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:20,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722942820] [2024-11-20 09:37:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722942820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:20,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083133269] [2024-11-20 09:37:20,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:20,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:37:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:37:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:37:20,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:20,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 100 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:20,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:20,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:20,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:21,851 INFO L124 PetriNetUnfolderBase]: 13070/18041 cut-off events. [2024-11-20 09:37:21,851 INFO L125 PetriNetUnfolderBase]: For 44989/44989 co-relation queries the response was YES. [2024-11-20 09:37:21,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58616 conditions, 18041 events. 13070/18041 cut-off events. For 44989/44989 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 98471 event pairs, 5015 based on Foata normal form. 5/16139 useless extension candidates. Maximal degree in co-relation 49617. Up to 7331 conditions per place. [2024-11-20 09:37:21,950 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 164 selfloop transitions, 23 changer transitions 8/196 dead transitions. [2024-11-20 09:37:21,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 196 transitions, 1880 flow [2024-11-20 09:37:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:37:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:37:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-11-20 09:37:21,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-11-20 09:37:21,952 INFO L175 Difference]: Start difference. First operand has 73 places, 100 transitions, 859 flow. Second operand 6 states and 135 transitions. [2024-11-20 09:37:21,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 196 transitions, 1880 flow [2024-11-20 09:37:22,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 196 transitions, 1794 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:22,143 INFO L231 Difference]: Finished difference. Result has 81 places, 112 transitions, 988 flow [2024-11-20 09:37:22,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=81, PETRI_TRANSITIONS=112} [2024-11-20 09:37:22,144 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-11-20 09:37:22,144 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 112 transitions, 988 flow [2024-11-20 09:37:22,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:22,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:22,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:22,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:37:22,145 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:22,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash 428945330, now seen corresponding path program 1 times [2024-11-20 09:37:22,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:22,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950659178] [2024-11-20 09:37:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:22,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:22,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950659178] [2024-11-20 09:37:22,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950659178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:22,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:22,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006394221] [2024-11-20 09:37:22,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:22,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:37:22,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:37:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:37:22,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:22,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 112 transitions, 988 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:22,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:22,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:22,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:24,727 INFO L124 PetriNetUnfolderBase]: 20914/28531 cut-off events. [2024-11-20 09:37:24,727 INFO L125 PetriNetUnfolderBase]: For 80443/80443 co-relation queries the response was YES. [2024-11-20 09:37:24,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96856 conditions, 28531 events. 20914/28531 cut-off events. For 80443/80443 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 158238 event pairs, 8224 based on Foata normal form. 5/25421 useless extension candidates. Maximal degree in co-relation 87865. Up to 10761 conditions per place. [2024-11-20 09:37:24,888 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 181 selfloop transitions, 25 changer transitions 41/248 dead transitions. [2024-11-20 09:37:24,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 248 transitions, 2514 flow [2024-11-20 09:37:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:37:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:37:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-11-20 09:37:24,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-20 09:37:24,891 INFO L175 Difference]: Start difference. First operand has 81 places, 112 transitions, 988 flow. Second operand 6 states and 154 transitions. [2024-11-20 09:37:24,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 248 transitions, 2514 flow [2024-11-20 09:37:25,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 248 transitions, 2469 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:25,237 INFO L231 Difference]: Finished difference. Result has 89 places, 124 transitions, 1167 flow [2024-11-20 09:37:25,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1167, PETRI_PLACES=89, PETRI_TRANSITIONS=124} [2024-11-20 09:37:25,238 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-11-20 09:37:25,239 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 124 transitions, 1167 flow [2024-11-20 09:37:25,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:25,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:25,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:25,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:37:25,240 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:25,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash -526697336, now seen corresponding path program 1 times [2024-11-20 09:37:25,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:25,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838460723] [2024-11-20 09:37:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:25,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:25,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838460723] [2024-11-20 09:37:25,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838460723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:25,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:25,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:25,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621571472] [2024-11-20 09:37:25,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:25,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:25,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:25,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:25,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:25,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 124 transitions, 1167 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:25,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:25,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:25,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:27,881 INFO L124 PetriNetUnfolderBase]: 19486/26684 cut-off events. [2024-11-20 09:37:27,881 INFO L125 PetriNetUnfolderBase]: For 82185/82185 co-relation queries the response was YES. [2024-11-20 09:37:27,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92886 conditions, 26684 events. 19486/26684 cut-off events. For 82185/82185 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 145791 event pairs, 5820 based on Foata normal form. 1/23742 useless extension candidates. Maximal degree in co-relation 92762. Up to 13657 conditions per place. [2024-11-20 09:37:28,015 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 185 selfloop transitions, 23 changer transitions 17/226 dead transitions. [2024-11-20 09:37:28,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 226 transitions, 2407 flow [2024-11-20 09:37:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-20 09:37:28,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-20 09:37:28,017 INFO L175 Difference]: Start difference. First operand has 89 places, 124 transitions, 1167 flow. Second operand 5 states and 127 transitions. [2024-11-20 09:37:28,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 226 transitions, 2407 flow [2024-11-20 09:37:28,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 226 transitions, 2352 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-20 09:37:28,273 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1366 flow [2024-11-20 09:37:28,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1366, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-11-20 09:37:28,274 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-11-20 09:37:28,274 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1366 flow [2024-11-20 09:37:28,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:28,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:28,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:28,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:37:28,274 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:28,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1684842140, now seen corresponding path program 2 times [2024-11-20 09:37:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:28,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142763006] [2024-11-20 09:37:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142763006] [2024-11-20 09:37:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142763006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:28,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:28,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529818972] [2024-11-20 09:37:28,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:28,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:28,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:28,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:28,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:28,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1366 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:28,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:28,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:28,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:30,876 INFO L124 PetriNetUnfolderBase]: 19241/26337 cut-off events. [2024-11-20 09:37:30,876 INFO L125 PetriNetUnfolderBase]: For 108085/108085 co-relation queries the response was YES. [2024-11-20 09:37:30,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92846 conditions, 26337 events. 19241/26337 cut-off events. For 108085/108085 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 144446 event pairs, 10629 based on Foata normal form. 1/23879 useless extension candidates. Maximal degree in co-relation 84700. Up to 19211 conditions per place. [2024-11-20 09:37:31,043 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 148 selfloop transitions, 20 changer transitions 17/186 dead transitions. [2024-11-20 09:37:31,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 186 transitions, 1916 flow [2024-11-20 09:37:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-20 09:37:31,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2024-11-20 09:37:31,045 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 1366 flow. Second operand 5 states and 122 transitions. [2024-11-20 09:37:31,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 186 transitions, 1916 flow [2024-11-20 09:37:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 186 transitions, 1875 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:31,460 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1327 flow [2024-11-20 09:37:31,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1327, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2024-11-20 09:37:31,461 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-11-20 09:37:31,461 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1327 flow [2024-11-20 09:37:31,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:31,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:31,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:31,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 09:37:31,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:31,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash 668742952, now seen corresponding path program 3 times [2024-11-20 09:37:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70575236] [2024-11-20 09:37:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:31,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70575236] [2024-11-20 09:37:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70575236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:31,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:31,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:31,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061688617] [2024-11-20 09:37:31,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:31,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:31,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:31,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1327 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:31,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:31,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:31,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:34,177 INFO L124 PetriNetUnfolderBase]: 19318/26435 cut-off events. [2024-11-20 09:37:34,177 INFO L125 PetriNetUnfolderBase]: For 110540/110540 co-relation queries the response was YES. [2024-11-20 09:37:34,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93579 conditions, 26435 events. 19318/26435 cut-off events. For 110540/110540 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 145010 event pairs, 10350 based on Foata normal form. 1/23958 useless extension candidates. Maximal degree in co-relation 93493. Up to 19211 conditions per place. [2024-11-20 09:37:34,423 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 163 selfloop transitions, 26 changer transitions 13/203 dead transitions. [2024-11-20 09:37:34,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 203 transitions, 2098 flow [2024-11-20 09:37:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-20 09:37:34,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-20 09:37:34,425 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1327 flow. Second operand 5 states and 131 transitions. [2024-11-20 09:37:34,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 203 transitions, 2098 flow [2024-11-20 09:37:34,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 203 transitions, 2052 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 09:37:34,795 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 1343 flow [2024-11-20 09:37:34,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1343, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2024-11-20 09:37:34,796 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-11-20 09:37:34,796 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 1343 flow [2024-11-20 09:37:34,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:34,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:34,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:34,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 09:37:34,797 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:34,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2097724826, now seen corresponding path program 4 times [2024-11-20 09:37:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:34,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220732363] [2024-11-20 09:37:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:34,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220732363] [2024-11-20 09:37:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220732363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:34,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:34,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250461457] [2024-11-20 09:37:34,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:34,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:34,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:34,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:34,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 1343 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:34,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:34,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:34,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:37,482 INFO L124 PetriNetUnfolderBase]: 19053/26048 cut-off events. [2024-11-20 09:37:37,483 INFO L125 PetriNetUnfolderBase]: For 115844/115844 co-relation queries the response was YES. [2024-11-20 09:37:37,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93933 conditions, 26048 events. 19053/26048 cut-off events. For 115844/115844 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 141807 event pairs, 11146 based on Foata normal form. 1/23582 useless extension candidates. Maximal degree in co-relation 88179. Up to 21122 conditions per place. [2024-11-20 09:37:37,664 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 153 selfloop transitions, 10 changer transitions 19/183 dead transitions. [2024-11-20 09:37:37,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 183 transitions, 1862 flow [2024-11-20 09:37:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-20 09:37:37,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-20 09:37:37,666 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 1343 flow. Second operand 5 states and 120 transitions. [2024-11-20 09:37:37,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 183 transitions, 1862 flow [2024-11-20 09:37:38,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 1810 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-20 09:37:38,083 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1229 flow [2024-11-20 09:37:38,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1229, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-11-20 09:37:38,085 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-11-20 09:37:38,085 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1229 flow [2024-11-20 09:37:38,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:38,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:38,086 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:38,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 09:37:38,087 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:38,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:38,087 INFO L85 PathProgramCache]: Analyzing trace with hash 817982174, now seen corresponding path program 5 times [2024-11-20 09:37:38,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:38,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241386804] [2024-11-20 09:37:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:38,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:38,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241386804] [2024-11-20 09:37:38,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241386804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:38,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:38,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:38,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053141148] [2024-11-20 09:37:38,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:38,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:38,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:38,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:38,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1229 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:38,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:38,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:38,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:40,776 INFO L124 PetriNetUnfolderBase]: 19392/26564 cut-off events. [2024-11-20 09:37:40,776 INFO L125 PetriNetUnfolderBase]: For 111963/111963 co-relation queries the response was YES. [2024-11-20 09:37:40,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95459 conditions, 26564 events. 19392/26564 cut-off events. For 111963/111963 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 145015 event pairs, 5939 based on Foata normal form. 1/24061 useless extension candidates. Maximal degree in co-relation 95383. Up to 14665 conditions per place. [2024-11-20 09:37:40,976 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 180 selfloop transitions, 15 changer transitions 10/206 dead transitions. [2024-11-20 09:37:40,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 206 transitions, 2076 flow [2024-11-20 09:37:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-20 09:37:40,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-20 09:37:40,978 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1229 flow. Second operand 5 states and 127 transitions. [2024-11-20 09:37:40,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 206 transitions, 2076 flow [2024-11-20 09:37:41,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 206 transitions, 2034 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-20 09:37:41,595 INFO L231 Difference]: Finished difference. Result has 101 places, 136 transitions, 1340 flow [2024-11-20 09:37:41,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1340, PETRI_PLACES=101, PETRI_TRANSITIONS=136} [2024-11-20 09:37:41,596 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-11-20 09:37:41,596 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 136 transitions, 1340 flow [2024-11-20 09:37:41,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:41,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:41,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:41,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 09:37:41,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:41,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash -353221696, now seen corresponding path program 6 times [2024-11-20 09:37:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874390797] [2024-11-20 09:37:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:41,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874390797] [2024-11-20 09:37:41,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874390797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:41,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:41,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225574818] [2024-11-20 09:37:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:41,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:41,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:41,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 136 transitions, 1340 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:41,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:41,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:41,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:44,040 INFO L124 PetriNetUnfolderBase]: 19393/26568 cut-off events. [2024-11-20 09:37:44,040 INFO L125 PetriNetUnfolderBase]: For 124989/124989 co-relation queries the response was YES. [2024-11-20 09:37:44,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97459 conditions, 26568 events. 19393/26568 cut-off events. For 124989/124989 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 145505 event pairs, 11171 based on Foata normal form. 1/24052 useless extension candidates. Maximal degree in co-relation 72860. Up to 21122 conditions per place. [2024-11-20 09:37:44,252 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 174 selfloop transitions, 17 changer transitions 10/202 dead transitions. [2024-11-20 09:37:44,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 202 transitions, 2016 flow [2024-11-20 09:37:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-20 09:37:44,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-20 09:37:44,254 INFO L175 Difference]: Start difference. First operand has 101 places, 136 transitions, 1340 flow. Second operand 5 states and 128 transitions. [2024-11-20 09:37:44,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 202 transitions, 2016 flow [2024-11-20 09:37:44,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 1999 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:44,600 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1346 flow [2024-11-20 09:37:44,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1346, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2024-11-20 09:37:44,601 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-11-20 09:37:44,602 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1346 flow [2024-11-20 09:37:44,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:44,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:44,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:44,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 09:37:44,603 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:44,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash -254441475, now seen corresponding path program 1 times [2024-11-20 09:37:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963640229] [2024-11-20 09:37:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:44,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:37:44,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963640229] [2024-11-20 09:37:44,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963640229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:44,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:44,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397171321] [2024-11-20 09:37:44,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:44,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:44,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:44,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:44,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1346 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:44,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:44,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:44,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:47,209 INFO L124 PetriNetUnfolderBase]: 20371/28035 cut-off events. [2024-11-20 09:37:47,209 INFO L125 PetriNetUnfolderBase]: For 140437/140437 co-relation queries the response was YES. [2024-11-20 09:37:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104266 conditions, 28035 events. 20371/28035 cut-off events. For 140437/140437 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 161994 event pairs, 5690 based on Foata normal form. 1/25388 useless extension candidates. Maximal degree in co-relation 78562. Up to 14385 conditions per place. [2024-11-20 09:37:47,745 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 205 selfloop transitions, 18 changer transitions 3/227 dead transitions. [2024-11-20 09:37:47,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 227 transitions, 2412 flow [2024-11-20 09:37:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-20 09:37:47,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-20 09:37:47,747 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1346 flow. Second operand 5 states and 133 transitions. [2024-11-20 09:37:47,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 227 transitions, 2412 flow [2024-11-20 09:37:47,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 227 transitions, 2354 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:47,991 INFO L231 Difference]: Finished difference. Result has 110 places, 149 transitions, 1583 flow [2024-11-20 09:37:47,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1583, PETRI_PLACES=110, PETRI_TRANSITIONS=149} [2024-11-20 09:37:47,991 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-11-20 09:37:47,991 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 149 transitions, 1583 flow [2024-11-20 09:37:47,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:47,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:47,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:47,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 09:37:47,992 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:47,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:47,992 INFO L85 PathProgramCache]: Analyzing trace with hash -456908967, now seen corresponding path program 2 times [2024-11-20 09:37:47,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:47,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269544592] [2024-11-20 09:37:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:47,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:37:48,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:48,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269544592] [2024-11-20 09:37:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269544592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:48,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:48,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657766940] [2024-11-20 09:37:48,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:48,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:48,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:48,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:48,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 149 transitions, 1583 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:48,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:48,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:48,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:50,783 INFO L124 PetriNetUnfolderBase]: 20338/27999 cut-off events. [2024-11-20 09:37:50,783 INFO L125 PetriNetUnfolderBase]: For 148837/148837 co-relation queries the response was YES. [2024-11-20 09:37:50,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105771 conditions, 27999 events. 20338/27999 cut-off events. For 148837/148837 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 156330 event pairs, 11171 based on Foata normal form. 1/25353 useless extension candidates. Maximal degree in co-relation 100069. Up to 21122 conditions per place. [2024-11-20 09:37:51,057 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 190 selfloop transitions, 26 changer transitions 3/220 dead transitions. [2024-11-20 09:37:51,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 220 transitions, 2390 flow [2024-11-20 09:37:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:37:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:37:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-20 09:37:51,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-20 09:37:51,058 INFO L175 Difference]: Start difference. First operand has 110 places, 149 transitions, 1583 flow. Second operand 5 states and 130 transitions. [2024-11-20 09:37:51,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 220 transitions, 2390 flow [2024-11-20 09:37:51,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 220 transitions, 2360 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:51,412 INFO L231 Difference]: Finished difference. Result has 116 places, 153 transitions, 1716 flow [2024-11-20 09:37:51,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1716, PETRI_PLACES=116, PETRI_TRANSITIONS=153} [2024-11-20 09:37:51,413 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-11-20 09:37:51,413 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 153 transitions, 1716 flow [2024-11-20 09:37:51,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:51,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:51,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:51,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 09:37:51,414 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:51,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash 623244311, now seen corresponding path program 3 times [2024-11-20 09:37:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571100881] [2024-11-20 09:37:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:37:51,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:51,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571100881] [2024-11-20 09:37:51,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571100881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:51,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:51,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:51,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711654029] [2024-11-20 09:37:51,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:51,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:51,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:51,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:51,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 153 transitions, 1716 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:51,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:51,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:51,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:55,210 INFO L124 PetriNetUnfolderBase]: 25978/35864 cut-off events. [2024-11-20 09:37:55,211 INFO L125 PetriNetUnfolderBase]: For 199528/199528 co-relation queries the response was YES. [2024-11-20 09:37:55,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136061 conditions, 35864 events. 25978/35864 cut-off events. For 199528/199528 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 214598 event pairs, 3467 based on Foata normal form. 1/32439 useless extension candidates. Maximal degree in co-relation 131658. Up to 11598 conditions per place. [2024-11-20 09:37:55,598 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 243 selfloop transitions, 45 changer transitions 4/293 dead transitions. [2024-11-20 09:37:55,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 293 transitions, 3349 flow [2024-11-20 09:37:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:37:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:37:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-11-20 09:37:55,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-11-20 09:37:55,600 INFO L175 Difference]: Start difference. First operand has 116 places, 153 transitions, 1716 flow. Second operand 6 states and 171 transitions. [2024-11-20 09:37:55,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 293 transitions, 3349 flow [2024-11-20 09:37:55,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 293 transitions, 3315 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-20 09:37:55,970 INFO L231 Difference]: Finished difference. Result has 124 places, 174 transitions, 2132 flow [2024-11-20 09:37:55,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2132, PETRI_PLACES=124, PETRI_TRANSITIONS=174} [2024-11-20 09:37:55,971 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-11-20 09:37:55,971 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 174 transitions, 2132 flow [2024-11-20 09:37:55,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:55,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:55,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:55,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 09:37:55,971 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:37:55,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1326802223, now seen corresponding path program 4 times [2024-11-20 09:37:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:55,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728915961] [2024-11-20 09:37:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:55,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:37:56,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:56,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728915961] [2024-11-20 09:37:56,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728915961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:56,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:56,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:37:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612168580] [2024-11-20 09:37:56,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:56,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:37:56,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:56,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:37:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:37:56,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-20 09:37:56,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 174 transitions, 2132 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:37:56,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:56,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-20 09:37:56,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:59,919 INFO L124 PetriNetUnfolderBase]: 26597/36749 cut-off events. [2024-11-20 09:37:59,919 INFO L125 PetriNetUnfolderBase]: For 237749/237749 co-relation queries the response was YES. [2024-11-20 09:38:00,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147976 conditions, 36749 events. 26597/36749 cut-off events. For 237749/237749 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 218550 event pairs, 6793 based on Foata normal form. 1/33192 useless extension candidates. Maximal degree in co-relation 143558. Up to 16510 conditions per place. [2024-11-20 09:38:00,735 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 237 selfloop transitions, 35 changer transitions 16/289 dead transitions. [2024-11-20 09:38:00,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 289 transitions, 3561 flow [2024-11-20 09:38:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:38:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:38:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-11-20 09:38:00,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-11-20 09:38:00,737 INFO L175 Difference]: Start difference. First operand has 124 places, 174 transitions, 2132 flow. Second operand 6 states and 160 transitions. [2024-11-20 09:38:00,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 289 transitions, 3561 flow