./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-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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-node-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 c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:28:16,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:28:16,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:28:16,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:28:16,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:28:16,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:28:16,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:28:16,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:28:16,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:28:16,750 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:28:16,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:28:16,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:28:16,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:28:16,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:28:16,756 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:28:16,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:28:16,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:28:16,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:28:16,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:28:16,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:28:16,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:28:16,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:28:16,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:28:16,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:28:16,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:28:16,760 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:28:16,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:28:16,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:28:16,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:28:16,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:28:16,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:28:16,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:28:16,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:28:16,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:28:16,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:28:16,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:28:16,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:28:16,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:28:16,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:28:16,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:28:16,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:28:16,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:28:16,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf [2024-10-24 12:28:17,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:28:17,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:28:17,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:28:17,085 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:28:17,085 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:28:17,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2024-10-24 12:28:18,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:28:18,925 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:28:18,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2024-10-24 12:28:18,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2fdb268/e797920f07dc4166a7cb56d7c498ce62/FLAG52fb84f73 [2024-10-24 12:28:18,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2fdb268/e797920f07dc4166a7cb56d7c498ce62 [2024-10-24 12:28:18,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:28:18,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:28:18,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:28:18,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:28:18,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:28:18,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:18" (1/1) ... [2024-10-24 12:28:18,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130e8d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:18, skipping insertion in model container [2024-10-24 12:28:18,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:28:18" (1/1) ... [2024-10-24 12:28:19,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:28:19,240 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3984,3997] [2024-10-24 12:28:19,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:28:19,274 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:28:19,321 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3984,3997] [2024-10-24 12:28:19,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:28:19,359 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:28:19,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19 WrapperNode [2024-10-24 12:28:19,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:28:19,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:28:19,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:28:19,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:28:19,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,421 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 424 [2024-10-24 12:28:19,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:28:19,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:28:19,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:28:19,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:28:19,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,481 INFO L175 MemorySlicer]: Split 26 memory accesses to 3 slices as follows [2, 15, 9]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2024-10-24 12:28:19,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:28:19,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:28:19,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:28:19,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:28:19,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (1/1) ... [2024-10-24 12:28:19,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:28:19,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:28:19,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:28:19,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:28:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:28:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:28:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:28:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:28:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:28:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:28:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:28:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:28:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:28:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:28:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:28:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:28:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:28:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:28:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:28:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:28:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:28:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:28:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:28:19,661 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:28:19,857 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:28:19,860 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:28:20,579 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:28:20,579 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:28:21,211 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:28:21,213 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 12:28:21,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:21 BoogieIcfgContainer [2024-10-24 12:28:21,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:28:21,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:28:21,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:28:21,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:28:21,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:28:18" (1/3) ... [2024-10-24 12:28:21,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbeae00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:21, skipping insertion in model container [2024-10-24 12:28:21,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:28:19" (2/3) ... [2024-10-24 12:28:21,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbeae00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:28:21, skipping insertion in model container [2024-10-24 12:28:21,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:21" (3/3) ... [2024-10-24 12:28:21,226 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2024-10-24 12:28:21,248 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:28:21,249 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:28:21,249 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:28:21,326 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:28:21,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-10-24 12:28:21,435 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-10-24 12:28:21,435 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:21,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-24 12:28:21,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-10-24 12:28:21,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-10-24 12:28:21,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:28:21,481 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;@215a0a66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:28:21,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:28:21,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:28:21,503 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-10-24 12:28:21,503 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:21,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:21,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:21,505 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)] === [2024-10-24 12:28:21,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1832792802, now seen corresponding path program 1 times [2024-10-24 12:28:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:21,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263265261] [2024-10-24 12:28:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:28:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:22,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263265261] [2024-10-24 12:28:22,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263265261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:22,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:28:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748025247] [2024-10-24 12:28:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:22,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:28:22,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:28:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:28:22,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:22,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:22,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:22,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:22,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:22,459 INFO L124 PetriNetUnfolderBase]: 38/83 cut-off events. [2024-10-24 12:28:22,460 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-24 12:28:22,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 83 events. 38/83 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 32 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 120. Up to 82 conditions per place. [2024-10-24 12:28:22,465 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 25 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-10-24 12:28:22,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 128 flow [2024-10-24 12:28:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:28:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:28:22,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-10-24 12:28:22,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-10-24 12:28:22,483 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 40 transitions. [2024-10-24 12:28:22,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 128 flow [2024-10-24 12:28:22,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 12:28:22,492 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 72 flow [2024-10-24 12:28:22,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2024-10-24 12:28:22,503 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-10-24 12:28:22,503 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 72 flow [2024-10-24 12:28:22,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:22,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:22,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:22,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:28:22,505 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)] === [2024-10-24 12:28:22,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1211915053, now seen corresponding path program 1 times [2024-10-24 12:28:22,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:22,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260524673] [2024-10-24 12:28:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:28:22,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260524673] [2024-10-24 12:28:22,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260524673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:22,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:22,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:28:22,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633518907] [2024-10-24 12:28:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:22,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:28:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:28:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:28:22,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:22,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:22,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:22,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:22,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:22,959 INFO L124 PetriNetUnfolderBase]: 38/84 cut-off events. [2024-10-24 12:28:22,959 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:28:22,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 84 events. 38/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 172. Up to 81 conditions per place. [2024-10-24 12:28:22,962 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 24 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-10-24 12:28:22,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 130 flow [2024-10-24 12:28:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:28:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:28:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-10-24 12:28:22,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-10-24 12:28:22,965 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 72 flow. Second operand 4 states and 45 transitions. [2024-10-24 12:28:22,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 130 flow [2024-10-24 12:28:22,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 126 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:22,967 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 86 flow [2024-10-24 12:28:22,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-24 12:28:22,968 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-10-24 12:28:22,968 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 86 flow [2024-10-24 12:28:22,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:22,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:22,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:22,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:28:22,969 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)] === [2024-10-24 12:28:22,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1038909340, now seen corresponding path program 1 times [2024-10-24 12:28:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997147886] [2024-10-24 12:28:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:28:23,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:23,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997147886] [2024-10-24 12:28:23,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997147886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:28:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193724125] [2024-10-24 12:28:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:23,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:28:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:28:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:28:23,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:23,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:23,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:23,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:23,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:23,338 INFO L124 PetriNetUnfolderBase]: 38/85 cut-off events. [2024-10-24 12:28:23,339 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:28:23,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 85 events. 38/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 82 conditions per place. [2024-10-24 12:28:23,340 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 25 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-10-24 12:28:23,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 146 flow [2024-10-24 12:28:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:28:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:28:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-10-24 12:28:23,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-10-24 12:28:23,342 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 86 flow. Second operand 4 states and 45 transitions. [2024-10-24 12:28:23,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 146 flow [2024-10-24 12:28:23,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:28:23,344 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 103 flow [2024-10-24 12:28:23,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-10-24 12:28:23,345 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-10-24 12:28:23,346 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 103 flow [2024-10-24 12:28:23,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:23,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:23,346 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] [2024-10-24 12:28:23,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:28:23,347 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)] === [2024-10-24 12:28:23,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1091596161, now seen corresponding path program 1 times [2024-10-24 12:28:23,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:23,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314901524] [2024-10-24 12:28:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 12:28:23,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314901524] [2024-10-24 12:28:23,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314901524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:23,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:23,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:28:23,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917433280] [2024-10-24 12:28:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:23,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:28:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:28:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:28:23,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:23,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:23,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:23,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:23,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:23,699 INFO L124 PetriNetUnfolderBase]: 38/86 cut-off events. [2024-10-24 12:28:23,699 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:23,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 86 events. 38/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 179. Up to 84 conditions per place. [2024-10-24 12:28:23,702 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-10-24 12:28:23,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 165 flow [2024-10-24 12:28:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:28:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:28:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-10-24 12:28:23,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-10-24 12:28:23,705 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 103 flow. Second operand 4 states and 44 transitions. [2024-10-24 12:28:23,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 165 flow [2024-10-24 12:28:23,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:23,708 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 113 flow [2024-10-24 12:28:23,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-10-24 12:28:23,710 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-10-24 12:28:23,711 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 113 flow [2024-10-24 12:28:23,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:23,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:23,712 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] [2024-10-24 12:28:23,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:28:23,713 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)] === [2024-10-24 12:28:23,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1484568796, now seen corresponding path program 1 times [2024-10-24 12:28:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:23,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217317321] [2024-10-24 12:28:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:28:23,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217317321] [2024-10-24 12:28:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217317321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:23,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:23,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:28:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015695849] [2024-10-24 12:28:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:23,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:28:23,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:28:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:28:23,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:23,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:23,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:23,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:23,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:24,101 INFO L124 PetriNetUnfolderBase]: 38/87 cut-off events. [2024-10-24 12:28:24,102 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:28:24,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 87 events. 38/87 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 185. Up to 85 conditions per place. [2024-10-24 12:28:24,104 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 28 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-10-24 12:28:24,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 177 flow [2024-10-24 12:28:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:28:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:28:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-10-24 12:28:24,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-10-24 12:28:24,106 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 113 flow. Second operand 4 states and 44 transitions. [2024-10-24 12:28:24,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 177 flow [2024-10-24 12:28:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 171 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:24,108 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 121 flow [2024-10-24 12:28:24,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-10-24 12:28:24,109 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-10-24 12:28:24,110 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 121 flow [2024-10-24 12:28:24,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:24,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:24,110 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] [2024-10-24 12:28:24,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:28:24,111 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)] === [2024-10-24 12:28:24,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 667979527, now seen corresponding path program 1 times [2024-10-24 12:28:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821434056] [2024-10-24 12:28:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:24,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 12:28:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821434056] [2024-10-24 12:28:24,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821434056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:24,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:24,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:28:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663750074] [2024-10-24 12:28:24,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:24,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:28:24,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:28:24,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:28:24,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:24,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:24,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:24,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:24,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:24,429 INFO L124 PetriNetUnfolderBase]: 38/88 cut-off events. [2024-10-24 12:28:24,430 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-24 12:28:24,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 88 events. 38/88 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 190. Up to 86 conditions per place. [2024-10-24 12:28:24,431 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-10-24 12:28:24,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 187 flow [2024-10-24 12:28:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:28:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:28:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-10-24 12:28:24,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-10-24 12:28:24,433 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 121 flow. Second operand 4 states and 44 transitions. [2024-10-24 12:28:24,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 187 flow [2024-10-24 12:28:24,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 181 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:24,436 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 129 flow [2024-10-24 12:28:24,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-10-24 12:28:24,436 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-10-24 12:28:24,437 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 129 flow [2024-10-24 12:28:24,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:28:24,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:24,438 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] [2024-10-24 12:28:24,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:28:24,439 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)] === [2024-10-24 12:28:24,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1966291484, now seen corresponding path program 1 times [2024-10-24 12:28:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:24,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308246485] [2024-10-24 12:28:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:24,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:28:25,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:25,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308246485] [2024-10-24 12:28:25,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308246485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:25,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:25,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184192791] [2024-10-24 12:28:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:25,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:25,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:25,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:25,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 129 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) [2024-10-24 12:28:25,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:25,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:25,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:26,245 INFO L124 PetriNetUnfolderBase]: 39/107 cut-off events. [2024-10-24 12:28:26,245 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-24 12:28:26,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 107 events. 39/107 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 284 event pairs, 7 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 231. Up to 41 conditions per place. [2024-10-24 12:28:26,247 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 42 selfloop transitions, 2 changer transitions 7/52 dead transitions. [2024-10-24 12:28:26,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 278 flow [2024-10-24 12:28:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-24 12:28:26,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-10-24 12:28:26,248 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 129 flow. Second operand 5 states and 66 transitions. [2024-10-24 12:28:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 278 flow [2024-10-24 12:28:26,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 272 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:26,251 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 138 flow [2024-10-24 12:28:26,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-10-24 12:28:26,252 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-10-24 12:28:26,252 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 138 flow [2024-10-24 12:28:26,252 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) [2024-10-24 12:28:26,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:26,252 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] [2024-10-24 12:28:26,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:28:26,253 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)] === [2024-10-24 12:28:26,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1611634074, now seen corresponding path program 2 times [2024-10-24 12:28:26,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373483854] [2024-10-24 12:28:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:26,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:28:27,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373483854] [2024-10-24 12:28:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373483854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:27,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:27,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538634728] [2024-10-24 12:28:27,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:27,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:27,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:27,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 138 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) [2024-10-24 12:28:27,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:27,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:27,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:27,497 INFO L124 PetriNetUnfolderBase]: 35/112 cut-off events. [2024-10-24 12:28:27,497 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-10-24 12:28:27,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 112 events. 35/112 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 305 event pairs, 10 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 295. Up to 48 conditions per place. [2024-10-24 12:28:27,499 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 5/50 dead transitions. [2024-10-24 12:28:27,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 286 flow [2024-10-24 12:28:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-24 12:28:27,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-10-24 12:28:27,501 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 138 flow. Second operand 5 states and 63 transitions. [2024-10-24 12:28:27,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 286 flow [2024-10-24 12:28:27,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 279 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:27,504 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 155 flow [2024-10-24 12:28:27,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2024-10-24 12:28:27,505 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-10-24 12:28:27,505 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 155 flow [2024-10-24 12:28:27,505 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) [2024-10-24 12:28:27,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:27,506 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] [2024-10-24 12:28:27,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:28:27,506 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)] === [2024-10-24 12:28:27,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1727440918, now seen corresponding path program 3 times [2024-10-24 12:28:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338929277] [2024-10-24 12:28:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:28:28,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:28,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338929277] [2024-10-24 12:28:28,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338929277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:28,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:28,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789932098] [2024-10-24 12:28:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:28,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:28,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:28,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 155 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) [2024-10-24 12:28:28,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:28,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:28,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:29,081 INFO L124 PetriNetUnfolderBase]: 35/115 cut-off events. [2024-10-24 12:28:29,082 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-10-24 12:28:29,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 115 events. 35/115 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 356 event pairs, 8 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 353. Up to 50 conditions per place. [2024-10-24 12:28:29,085 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 40 selfloop transitions, 2 changer transitions 9/52 dead transitions. [2024-10-24 12:28:29,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 318 flow [2024-10-24 12:28:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-10-24 12:28:29,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-10-24 12:28:29,087 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 155 flow. Second operand 5 states and 64 transitions. [2024-10-24 12:28:29,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 318 flow [2024-10-24 12:28:29,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 307 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-24 12:28:29,090 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 162 flow [2024-10-24 12:28:29,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2024-10-24 12:28:29,094 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-10-24 12:28:29,094 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 162 flow [2024-10-24 12:28:29,095 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) [2024-10-24 12:28:29,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:29,095 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] [2024-10-24 12:28:29,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:28:29,095 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)] === [2024-10-24 12:28:29,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash 494017660, now seen corresponding path program 4 times [2024-10-24 12:28:29,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926152839] [2024-10-24 12:28:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:28:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:29,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926152839] [2024-10-24 12:28:29,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926152839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:29,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:29,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909364701] [2024-10-24 12:28:29,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:29,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:29,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:29,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:29,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 162 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) [2024-10-24 12:28:29,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:29,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:29,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:30,172 INFO L124 PetriNetUnfolderBase]: 30/98 cut-off events. [2024-10-24 12:28:30,172 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-24 12:28:30,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 98 events. 30/98 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 15 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 332. Up to 64 conditions per place. [2024-10-24 12:28:30,174 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 40 selfloop transitions, 3 changer transitions 7/51 dead transitions. [2024-10-24 12:28:30,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 330 flow [2024-10-24 12:28:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-10-24 12:28:30,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-24 12:28:30,177 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 162 flow. Second operand 5 states and 62 transitions. [2024-10-24 12:28:30,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 330 flow [2024-10-24 12:28:30,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 311 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-24 12:28:30,181 INFO L231 Difference]: Finished difference. Result has 55 places, 35 transitions, 169 flow [2024-10-24 12:28:30,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2024-10-24 12:28:30,184 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-10-24 12:28:30,185 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 169 flow [2024-10-24 12:28:30,186 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) [2024-10-24 12:28:30,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:30,186 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] [2024-10-24 12:28:30,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:28:30,186 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)] === [2024-10-24 12:28:30,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1025750212, now seen corresponding path program 5 times [2024-10-24 12:28:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842060478] [2024-10-24 12:28:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:28:31,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842060478] [2024-10-24 12:28:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842060478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:31,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:31,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834346468] [2024-10-24 12:28:31,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:31,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:31,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:31,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:31,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 169 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) [2024-10-24 12:28:31,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:31,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:31,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:31,395 INFO L124 PetriNetUnfolderBase]: 24/77 cut-off events. [2024-10-24 12:28:31,396 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-10-24 12:28:31,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 77 events. 24/77 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 7 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 276. Up to 45 conditions per place. [2024-10-24 12:28:31,398 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 1 changer transitions 14/49 dead transitions. [2024-10-24 12:28:31,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 307 flow [2024-10-24 12:28:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-10-24 12:28:31,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-24 12:28:31,402 INFO L175 Difference]: Start difference. First operand has 55 places, 35 transitions, 169 flow. Second operand 5 states and 62 transitions. [2024-10-24 12:28:31,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 307 flow [2024-10-24 12:28:31,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 295 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-24 12:28:31,408 INFO L231 Difference]: Finished difference. Result has 56 places, 33 transitions, 148 flow [2024-10-24 12:28:31,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=56, PETRI_TRANSITIONS=33} [2024-10-24 12:28:31,409 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-10-24 12:28:31,410 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 33 transitions, 148 flow [2024-10-24 12:28:31,410 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) [2024-10-24 12:28:31,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:28:31,411 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] [2024-10-24 12:28:31,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:28:31,411 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)] === [2024-10-24 12:28:31,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:28:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash -143211830, now seen corresponding path program 6 times [2024-10-24 12:28:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:28:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852683991] [2024-10-24 12:28:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:28:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:28:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:28:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:28:32,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:28:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852683991] [2024-10-24 12:28:32,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852683991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:28:32,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:28:32,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:28:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939469673] [2024-10-24 12:28:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:28:32,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:28:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:28:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:28:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:28:32,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-10-24 12:28:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 33 transitions, 148 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) [2024-10-24 12:28:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:28:32,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-10-24 12:28:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:28:32,376 INFO L124 PetriNetUnfolderBase]: 15/51 cut-off events. [2024-10-24 12:28:32,376 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-24 12:28:32,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 51 events. 15/51 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 5 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 181. Up to 38 conditions per place. [2024-10-24 12:28:32,378 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2024-10-24 12:28:32,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 37 transitions, 236 flow [2024-10-24 12:28:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:28:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:28:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-10-24 12:28:32,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-10-24 12:28:32,379 INFO L175 Difference]: Start difference. First operand has 56 places, 33 transitions, 148 flow. Second operand 5 states and 52 transitions. [2024-10-24 12:28:32,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 37 transitions, 236 flow [2024-10-24 12:28:32,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 218 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-10-24 12:28:32,381 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-10-24 12:28:32,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-10-24 12:28:32,382 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-10-24 12:28:32,384 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-10-24 12:28:32,384 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) [2024-10-24 12:28:32,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-24 12:28:32,387 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-24 12:28:32,388 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-24 12:28:32,388 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-24 12:28:32,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 12:28:32,388 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2024-10-24 12:28:32,394 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:28:32,395 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:28:32,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:28:32 BasicIcfg [2024-10-24 12:28:32,402 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:28:32,403 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:28:32,403 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:28:32,404 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:28:32,404 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:28:21" (3/4) ... [2024-10-24 12:28:32,406 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:28:32,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-24 12:28:32,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-24 12:28:32,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-24 12:28:32,421 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 330 nodes and edges [2024-10-24 12:28:32,422 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-10-24 12:28:32,422 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-10-24 12:28:32,423 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:28:32,557 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:28:32,558 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:28:32,558 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:28:32,558 INFO L158 Benchmark]: Toolchain (without parser) took 13599.18ms. Allocated memory was 176.2MB in the beginning and 432.0MB in the end (delta: 255.9MB). Free memory was 122.8MB in the beginning and 389.0MB in the end (delta: -266.2MB). Peak memory consumption was 244.9MB. Max. memory is 16.1GB. [2024-10-24 12:28:32,559 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:28:32,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.86ms. Allocated memory is still 176.2MB. Free memory was 122.8MB in the beginning and 108.0MB in the end (delta: 14.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 12:28:32,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.09ms. Allocated memory is still 176.2MB. Free memory was 108.0MB in the beginning and 104.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:28:32,559 INFO L158 Benchmark]: Boogie Preprocessor took 104.01ms. Allocated memory is still 176.2MB. Free memory was 104.5MB in the beginning and 100.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:28:32,560 INFO L158 Benchmark]: RCFGBuilder took 1686.27ms. Allocated memory was 176.2MB in the beginning and 232.8MB in the end (delta: 56.6MB). Free memory was 100.3MB in the beginning and 79.3MB in the end (delta: 21.0MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2024-10-24 12:28:32,560 INFO L158 Benchmark]: TraceAbstraction took 11186.51ms. Allocated memory was 232.8MB in the beginning and 432.0MB in the end (delta: 199.2MB). Free memory was 78.2MB in the beginning and 141.7MB in the end (delta: -63.5MB). Peak memory consumption was 135.7MB. Max. memory is 16.1GB. [2024-10-24 12:28:32,560 INFO L158 Benchmark]: Witness Printer took 154.53ms. Allocated memory is still 432.0MB. Free memory was 141.7MB in the beginning and 389.0MB in the end (delta: -247.3MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-10-24 12:28:32,562 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.86ms. Allocated memory is still 176.2MB. Free memory was 122.8MB in the beginning and 108.0MB in the end (delta: 14.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.09ms. Allocated memory is still 176.2MB. Free memory was 108.0MB in the beginning and 104.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.01ms. Allocated memory is still 176.2MB. Free memory was 104.5MB in the beginning and 100.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1686.27ms. Allocated memory was 176.2MB in the beginning and 232.8MB in the end (delta: 56.6MB). Free memory was 100.3MB in the beginning and 79.3MB in the end (delta: 21.0MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11186.51ms. Allocated memory was 232.8MB in the beginning and 432.0MB in the end (delta: 199.2MB). Free memory was 78.2MB in the beginning and 141.7MB in the end (delta: -63.5MB). Peak memory consumption was 135.7MB. Max. memory is 16.1GB. * Witness Printer took 154.53ms. Allocated memory is still 432.0MB. Free memory was 141.7MB in the beginning and 389.0MB in the end (delta: -247.3MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 109]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 35 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.0s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1061 IncrementalHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 1061 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=10, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 303 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 1453 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 51/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 12:28:32,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE