./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/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:14:48,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:14:48,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:14:48,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:14:48,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:14:48,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:14:48,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:14:48,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:14:48,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:14:48,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:14:48,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:14:48,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:14:48,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:14:48,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:14:48,986 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:14:48,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:14:48,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:14:48,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:14:48,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:14:48,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:14:48,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:14:48,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:14:48,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:14:48,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:14:48,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:14:48,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:14:48,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:14:48,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:14:48,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:14:48,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:14:48,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:14:48,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:14:48,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:14:48,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:14:48,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:14:48,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:14:48,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:14:48,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:14:48,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:14:48,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:14:48,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:14:49,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:14:49,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-10-13 07:14:49,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:14:49,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:14:49,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:14:49,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:14:49,303 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:14:49,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-10-13 07:14:50,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:14:50,938 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:14:50,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-10-13 07:14:50,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3a746ab/27c604ec2f184c079baa859b3bbe52fe/FLAGd5e7ac294 [2024-10-13 07:14:50,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af3a746ab/27c604ec2f184c079baa859b3bbe52fe [2024-10-13 07:14:50,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:14:50,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:14:50,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:14:50,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:14:50,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:14:50,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:50" (1/1) ... [2024-10-13 07:14:50,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358d6044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:50, skipping insertion in model container [2024-10-13 07:14:50,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:14:50" (1/1) ... [2024-10-13 07:14:50,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:14:51,179 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/popl20-mult-4.wvr.c[2664,2677] [2024-10-13 07:14:51,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:14:51,202 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:14:51,229 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/popl20-mult-4.wvr.c[2664,2677] [2024-10-13 07:14:51,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:14:51,251 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:14:51,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51 WrapperNode [2024-10-13 07:14:51,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:14:51,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:14:51,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:14:51,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:14:51,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,290 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 98 [2024-10-13 07:14:51,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:14:51,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:14:51,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:14:51,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:14:51,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,322 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 07:14:51,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:14:51,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:14:51,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:14:51,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:14:51,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (1/1) ... [2024-10-13 07:14:51,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:14:51,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:51,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:14:51,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:14:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:14:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:14:51,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:14:51,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:14:51,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:14:51,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:14:51,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:14:51,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 07:14:51,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 07:14:51,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:14:51,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:14:51,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:14:51,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:14:51,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:14:51,439 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:14:51,544 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:14:51,546 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:14:51,832 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:14:51,832 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:14:51,983 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:14:51,987 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 07:14:51,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:51 BoogieIcfgContainer [2024-10-13 07:14:51,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:14:51,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:14:51,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:14:51,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:14:51,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:14:50" (1/3) ... [2024-10-13 07:14:51,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39773170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:51, skipping insertion in model container [2024-10-13 07:14:51,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:14:51" (2/3) ... [2024-10-13 07:14:51,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39773170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:14:51, skipping insertion in model container [2024-10-13 07:14:51,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:14:51" (3/3) ... [2024-10-13 07:14:51,999 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-10-13 07:14:52,019 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:14:52,021 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:14:52,021 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:14:52,099 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 07:14:52,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-10-13 07:14:52,158 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-13 07:14:52,158 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:14:52,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-13 07:14:52,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-10-13 07:14:52,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-10-13 07:14:52,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:14:52,185 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;@3b3f60e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:14:52,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 07:14:52,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:14:52,203 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-10-13 07:14:52,203 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:14:52,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:52,204 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] [2024-10-13 07:14:52,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:14:52,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash -196909692, now seen corresponding path program 1 times [2024-10-13 07:14:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:52,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594601951] [2024-10-13 07:14:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:52,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:52,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:52,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594601951] [2024-10-13 07:14:52,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594601951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:52,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:52,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:14:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023891122] [2024-10-13 07:14:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:52,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:14:52,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:14:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:14:52,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-10-13 07:14:52,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:52,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:52,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-10-13 07:14:52,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:53,261 INFO L124 PetriNetUnfolderBase]: 3042/4228 cut-off events. [2024-10-13 07:14:53,261 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-10-13 07:14:53,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 4228 events. 3042/4228 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18771 event pairs, 763 based on Foata normal form. 152/4370 useless extension candidates. Maximal degree in co-relation 7622. Up to 3203 conditions per place. [2024-10-13 07:14:53,300 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-10-13 07:14:53,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-10-13 07:14:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:14:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:14:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-13 07:14:53,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-13 07:14:53,317 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-10-13 07:14:53,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-10-13 07:14:53,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 07:14:53,331 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-10-13 07:14:53,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-10-13 07:14:53,337 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-10-13 07:14:53,338 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-10-13 07:14:53,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:53,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:53,339 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] [2024-10-13 07:14:53,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:14:53,340 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:14:53,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:53,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1212674722, now seen corresponding path program 1 times [2024-10-13 07:14:53,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:53,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396981176] [2024-10-13 07:14:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:53,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396981176] [2024-10-13 07:14:53,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396981176] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:53,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:53,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:14:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229628746] [2024-10-13 07:14:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:53,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:14:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:53,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:14:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:14:53,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:14:53,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:53,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:53,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:14:53,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:54,965 INFO L124 PetriNetUnfolderBase]: 11982/15969 cut-off events. [2024-10-13 07:14:54,967 INFO L125 PetriNetUnfolderBase]: For 965/965 co-relation queries the response was YES. [2024-10-13 07:14:55,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33885 conditions, 15969 events. 11982/15969 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 80300 event pairs, 4246 based on Foata normal form. 0/12597 useless extension candidates. Maximal degree in co-relation 9444. Up to 8562 conditions per place. [2024-10-13 07:14:55,155 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-10-13 07:14:55,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-10-13 07:14:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:14:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:14:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-13 07:14:55,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-10-13 07:14:55,158 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 129 transitions. [2024-10-13 07:14:55,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-10-13 07:14:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:14:55,163 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-10-13 07:14:55,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-10-13 07:14:55,164 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-10-13 07:14:55,164 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-10-13 07:14:55,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:55,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:55,165 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] [2024-10-13 07:14:55,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:14:55,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:14:55,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:55,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1378229130, now seen corresponding path program 2 times [2024-10-13 07:14:55,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883885066] [2024-10-13 07:14:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:55,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883885066] [2024-10-13 07:14:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883885066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:55,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:14:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495611906] [2024-10-13 07:14:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:55,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:14:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:55,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:14:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:14:55,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:14:55,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:55,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:55,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:14:55,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:57,134 INFO L124 PetriNetUnfolderBase]: 17564/23591 cut-off events. [2024-10-13 07:14:57,135 INFO L125 PetriNetUnfolderBase]: For 10625/10703 co-relation queries the response was YES. [2024-10-13 07:14:57,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62097 conditions, 23591 events. 17564/23591 cut-off events. For 10625/10703 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 127674 event pairs, 3199 based on Foata normal form. 682/23853 useless extension candidates. Maximal degree in co-relation 35433. Up to 13004 conditions per place. [2024-10-13 07:14:57,435 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 85 selfloop transitions, 8 changer transitions 2/100 dead transitions. [2024-10-13 07:14:57,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 100 transitions, 538 flow [2024-10-13 07:14:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:14:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:14:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-13 07:14:57,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-13 07:14:57,439 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 106 transitions. [2024-10-13 07:14:57,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 100 transitions, 538 flow [2024-10-13 07:14:57,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:14:57,451 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 251 flow [2024-10-13 07:14:57,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2024-10-13 07:14:57,452 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-10-13 07:14:57,453 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 251 flow [2024-10-13 07:14:57,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:57,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:57,453 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] [2024-10-13 07:14:57,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:14:57,454 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:14:57,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1042999286, now seen corresponding path program 3 times [2024-10-13 07:14:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425353769] [2024-10-13 07:14:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:57,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:57,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:57,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425353769] [2024-10-13 07:14:57,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425353769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:57,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:57,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:14:57,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36123755] [2024-10-13 07:14:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:57,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:14:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:14:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:14:57,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:14:57,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:57,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:57,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:14:57,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:59,862 INFO L124 PetriNetUnfolderBase]: 23068/30667 cut-off events. [2024-10-13 07:14:59,863 INFO L125 PetriNetUnfolderBase]: For 28293/28363 co-relation queries the response was YES. [2024-10-13 07:14:59,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90946 conditions, 30667 events. 23068/30667 cut-off events. For 28293/28363 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 165130 event pairs, 6411 based on Foata normal form. 198/30256 useless extension candidates. Maximal degree in co-relation 34831. Up to 12390 conditions per place. [2024-10-13 07:15:00,122 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 97 selfloop transitions, 18 changer transitions 0/120 dead transitions. [2024-10-13 07:15:00,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 120 transitions, 739 flow [2024-10-13 07:15:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:15:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:15:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-13 07:15:00,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-13 07:15:00,125 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 251 flow. Second operand 5 states and 128 transitions. [2024-10-13 07:15:00,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 120 transitions, 739 flow [2024-10-13 07:15:00,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 120 transitions, 739 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:15:00,145 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 382 flow [2024-10-13 07:15:00,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-10-13 07:15:00,146 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-10-13 07:15:00,146 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 382 flow [2024-10-13 07:15:00,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:00,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:00,147 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] [2024-10-13 07:15:00,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:15:00,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:15:00,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:00,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1595229820, now seen corresponding path program 4 times [2024-10-13 07:15:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:00,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769661756] [2024-10-13 07:15:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:00,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769661756] [2024-10-13 07:15:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769661756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:00,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:00,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:15:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210621075] [2024-10-13 07:15:00,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:00,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:15:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:15:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:15:00,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:00,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:00,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:00,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:00,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:02,268 INFO L124 PetriNetUnfolderBase]: 23424/31316 cut-off events. [2024-10-13 07:15:02,268 INFO L125 PetriNetUnfolderBase]: For 56673/56749 co-relation queries the response was YES. [2024-10-13 07:15:02,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103558 conditions, 31316 events. 23424/31316 cut-off events. For 56673/56749 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 171685 event pairs, 6986 based on Foata normal form. 374/31085 useless extension candidates. Maximal degree in co-relation 38546. Up to 16023 conditions per place. [2024-10-13 07:15:02,691 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 90 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2024-10-13 07:15:02,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 755 flow [2024-10-13 07:15:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:15:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:15:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-13 07:15:02,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-13 07:15:02,693 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 382 flow. Second operand 4 states and 106 transitions. [2024-10-13 07:15:02,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 755 flow [2024-10-13 07:15:02,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 741 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-10-13 07:15:02,767 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 409 flow [2024-10-13 07:15:02,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-10-13 07:15:02,768 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-10-13 07:15:02,768 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 409 flow [2024-10-13 07:15:02,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:02,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:02,769 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] [2024-10-13 07:15:02,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:15:02,770 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:15:02,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:02,770 INFO L85 PathProgramCache]: Analyzing trace with hash -968849720, now seen corresponding path program 1 times [2024-10-13 07:15:02,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:02,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580142822] [2024-10-13 07:15:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:02,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:02,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580142822] [2024-10-13 07:15:02,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580142822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:02,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:15:02,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516063968] [2024-10-13 07:15:02,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:02,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:15:02,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:02,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:15:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:15:02,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:02,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:02,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:02,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:02,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:05,229 INFO L124 PetriNetUnfolderBase]: 25337/34127 cut-off events. [2024-10-13 07:15:05,229 INFO L125 PetriNetUnfolderBase]: For 83667/83689 co-relation queries the response was YES. [2024-10-13 07:15:05,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115511 conditions, 34127 events. 25337/34127 cut-off events. For 83667/83689 co-relation queries the response was YES. Maximal size of possible extension queue 1275. Compared 193894 event pairs, 7642 based on Foata normal form. 762/34103 useless extension candidates. Maximal degree in co-relation 43375. Up to 15999 conditions per place. [2024-10-13 07:15:05,465 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 92 selfloop transitions, 12 changer transitions 17/126 dead transitions. [2024-10-13 07:15:05,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 126 transitions, 936 flow [2024-10-13 07:15:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:15:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:15:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-10-13 07:15:05,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-13 07:15:05,467 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 409 flow. Second operand 5 states and 130 transitions. [2024-10-13 07:15:05,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 126 transitions, 936 flow [2024-10-13 07:15:05,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 126 transitions, 849 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-10-13 07:15:05,532 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 413 flow [2024-10-13 07:15:05,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2024-10-13 07:15:05,536 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2024-10-13 07:15:05,536 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 413 flow [2024-10-13 07:15:05,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:05,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:05,536 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] [2024-10-13 07:15:05,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:15:05,537 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 2 more)] === [2024-10-13 07:15:05,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1024433046, now seen corresponding path program 2 times [2024-10-13 07:15:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986234895] [2024-10-13 07:15:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:05,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:05,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:05,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986234895] [2024-10-13 07:15:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986234895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:05,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:05,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:15:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388172079] [2024-10-13 07:15:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:05,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:15:05,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:15:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:15:05,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:05,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:05,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:05,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:05,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:07,925 INFO L124 PetriNetUnfolderBase]: 23812/32163 cut-off events. [2024-10-13 07:15:07,925 INFO L125 PetriNetUnfolderBase]: For 74083/74157 co-relation queries the response was YES. [2024-10-13 07:15:08,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112397 conditions, 32163 events. 23812/32163 cut-off events. For 74083/74157 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 180610 event pairs, 7575 based on Foata normal form. 645/32072 useless extension candidates. Maximal degree in co-relation 46903. Up to 16193 conditions per place. [2024-10-13 07:15:08,136 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 80 selfloop transitions, 18 changer transitions 5/108 dead transitions. [2024-10-13 07:15:08,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 830 flow [2024-10-13 07:15:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:15:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:15:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-10-13 07:15:08,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-13 07:15:08,138 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 413 flow. Second operand 4 states and 104 transitions. [2024-10-13 07:15:08,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 830 flow [2024-10-13 07:15:08,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 791 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 07:15:08,270 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 453 flow [2024-10-13 07:15:08,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-13 07:15:08,271 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-10-13 07:15:08,271 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 453 flow [2024-10-13 07:15:08,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:08,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:08,272 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, 1, 1] [2024-10-13 07:15:08,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:15:08,272 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 2 more)] === [2024-10-13 07:15:08,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2090472171, now seen corresponding path program 1 times [2024-10-13 07:15:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:08,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308480695] [2024-10-13 07:15:08,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:08,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:08,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308480695] [2024-10-13 07:15:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308480695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:08,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:08,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:15:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664161134] [2024-10-13 07:15:08,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:08,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:15:08,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:08,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:15:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:15:08,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:08,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:08,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:08,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:08,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:11,227 INFO L124 PetriNetUnfolderBase]: 29031/39316 cut-off events. [2024-10-13 07:15:11,228 INFO L125 PetriNetUnfolderBase]: For 92105/92175 co-relation queries the response was YES. [2024-10-13 07:15:11,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140971 conditions, 39316 events. 29031/39316 cut-off events. For 92105/92175 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 229030 event pairs, 4660 based on Foata normal form. 882/39554 useless extension candidates. Maximal degree in co-relation 63214. Up to 16276 conditions per place. [2024-10-13 07:15:11,497 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 122 selfloop transitions, 25 changer transitions 5/157 dead transitions. [2024-10-13 07:15:11,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 157 transitions, 1191 flow [2024-10-13 07:15:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:15:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:15:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-10-13 07:15:11,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-10-13 07:15:11,499 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 453 flow. Second operand 7 states and 179 transitions. [2024-10-13 07:15:11,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 157 transitions, 1191 flow [2024-10-13 07:15:11,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 157 transitions, 1164 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-13 07:15:11,531 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 605 flow [2024-10-13 07:15:11,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=605, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-10-13 07:15:11,532 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-10-13 07:15:11,532 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 605 flow [2024-10-13 07:15:11,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:11,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:11,533 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, 1, 1] [2024-10-13 07:15:11,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 07:15:11,533 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 2 more)] === [2024-10-13 07:15:11,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1417153903, now seen corresponding path program 1 times [2024-10-13 07:15:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:11,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104541044] [2024-10-13 07:15:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:11,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:15:11,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104541044] [2024-10-13 07:15:11,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104541044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:11,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:11,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:15:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17944505] [2024-10-13 07:15:11,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:11,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:15:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:15:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:15:11,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:11,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:11,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:11,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:11,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:15,006 INFO L124 PetriNetUnfolderBase]: 36565/49188 cut-off events. [2024-10-13 07:15:15,007 INFO L125 PetriNetUnfolderBase]: For 170311/170335 co-relation queries the response was YES. [2024-10-13 07:15:15,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186664 conditions, 49188 events. 36565/49188 cut-off events. For 170311/170335 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 291872 event pairs, 9834 based on Foata normal form. 320/48618 useless extension candidates. Maximal degree in co-relation 111551. Up to 21206 conditions per place. [2024-10-13 07:15:15,463 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 135 selfloop transitions, 31 changer transitions 4/175 dead transitions. [2024-10-13 07:15:15,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 175 transitions, 1849 flow [2024-10-13 07:15:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:15:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:15:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-13 07:15:15,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-13 07:15:15,464 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 605 flow. Second operand 5 states and 126 transitions. [2024-10-13 07:15:15,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 175 transitions, 1849 flow [2024-10-13 07:15:16,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 175 transitions, 1732 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-10-13 07:15:16,007 INFO L231 Difference]: Finished difference. Result has 73 places, 90 transitions, 840 flow [2024-10-13 07:15:16,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=73, PETRI_TRANSITIONS=90} [2024-10-13 07:15:16,008 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-10-13 07:15:16,008 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 840 flow [2024-10-13 07:15:16,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:16,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:16,008 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, 1, 1] [2024-10-13 07:15:16,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 07:15:16,009 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 2 more)] === [2024-10-13 07:15:16,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1017012735, now seen corresponding path program 2 times [2024-10-13 07:15:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302108994] [2024-10-13 07:15:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:15:16,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:16,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302108994] [2024-10-13 07:15:16,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302108994] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:15:16,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405664198] [2024-10-13 07:15:16,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:15:16,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:15:16,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:15:16,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:15:16,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:15:16,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:15:16,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:15:16,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:15:16,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:15:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:15:16,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:15:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:15:16,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405664198] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:15:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:15:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-10-13 07:15:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660803126] [2024-10-13 07:15:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:16,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:15:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:15:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:15:16,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:16,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:16,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:16,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:16,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:20,247 INFO L124 PetriNetUnfolderBase]: 37850/51490 cut-off events. [2024-10-13 07:15:20,247 INFO L125 PetriNetUnfolderBase]: For 218123/218149 co-relation queries the response was YES. [2024-10-13 07:15:20,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220804 conditions, 51490 events. 37850/51490 cut-off events. For 218123/218149 co-relation queries the response was YES. Maximal size of possible extension queue 2032. Compared 313553 event pairs, 4767 based on Foata normal form. 1265/52133 useless extension candidates. Maximal degree in co-relation 130141. Up to 24085 conditions per place. [2024-10-13 07:15:20,682 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 128 selfloop transitions, 13 changer transitions 11/157 dead transitions. [2024-10-13 07:15:20,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 157 transitions, 1746 flow [2024-10-13 07:15:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:15:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:15:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-10-13 07:15:20,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-13 07:15:20,684 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 840 flow. Second operand 4 states and 100 transitions. [2024-10-13 07:15:20,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 157 transitions, 1746 flow [2024-10-13 07:15:21,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 157 transitions, 1692 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-13 07:15:21,062 INFO L231 Difference]: Finished difference. Result has 77 places, 91 transitions, 860 flow [2024-10-13 07:15:21,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=860, PETRI_PLACES=77, PETRI_TRANSITIONS=91} [2024-10-13 07:15:21,063 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-10-13 07:15:21,063 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 860 flow [2024-10-13 07:15:21,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:21,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:21,064 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, 1, 1] [2024-10-13 07:15:21,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 07:15:21,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 07:15:21,266 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 2 more)] === [2024-10-13 07:15:21,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1739015201, now seen corresponding path program 3 times [2024-10-13 07:15:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294701165] [2024-10-13 07:15:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:15:21,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:21,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294701165] [2024-10-13 07:15:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294701165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:21,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:15:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467049496] [2024-10-13 07:15:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:21,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:15:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:15:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:15:21,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:21,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:21,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:21,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:21,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:26,535 INFO L124 PetriNetUnfolderBase]: 48949/66373 cut-off events. [2024-10-13 07:15:26,535 INFO L125 PetriNetUnfolderBase]: For 351100/351178 co-relation queries the response was YES. [2024-10-13 07:15:26,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299147 conditions, 66373 events. 48949/66373 cut-off events. For 351100/351178 co-relation queries the response was YES. Maximal size of possible extension queue 2466. Compared 408894 event pairs, 15957 based on Foata normal form. 306/65150 useless extension candidates. Maximal degree in co-relation 177387. Up to 37021 conditions per place. [2024-10-13 07:15:27,346 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 174 selfloop transitions, 29 changer transitions 4/212 dead transitions. [2024-10-13 07:15:27,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 212 transitions, 2507 flow [2024-10-13 07:15:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:15:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:15:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-10-13 07:15:27,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-10-13 07:15:27,350 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 860 flow. Second operand 5 states and 124 transitions. [2024-10-13 07:15:27,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 212 transitions, 2507 flow [2024-10-13 07:15:27,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 212 transitions, 2472 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:15:27,694 INFO L231 Difference]: Finished difference. Result has 82 places, 114 transitions, 1260 flow [2024-10-13 07:15:27,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1260, PETRI_PLACES=82, PETRI_TRANSITIONS=114} [2024-10-13 07:15:27,695 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-10-13 07:15:27,695 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 114 transitions, 1260 flow [2024-10-13 07:15:27,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:27,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:27,695 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, 1, 1] [2024-10-13 07:15:27,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 07:15:27,696 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 2 more)] === [2024-10-13 07:15:27,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -679498479, now seen corresponding path program 2 times [2024-10-13 07:15:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296973615] [2024-10-13 07:15:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296973615] [2024-10-13 07:15:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296973615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:27,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:15:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356465463] [2024-10-13 07:15:27,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:27,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:15:27,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:15:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:15:27,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:27,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 114 transitions, 1260 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:27,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:27,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:34,705 INFO L124 PetriNetUnfolderBase]: 62690/84017 cut-off events. [2024-10-13 07:15:34,705 INFO L125 PetriNetUnfolderBase]: For 559579/559769 co-relation queries the response was YES. [2024-10-13 07:15:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418453 conditions, 84017 events. 62690/84017 cut-off events. For 559579/559769 co-relation queries the response was YES. Maximal size of possible extension queue 3384. Compared 524038 event pairs, 14896 based on Foata normal form. 1299/82705 useless extension candidates. Maximal degree in co-relation 298353. Up to 33847 conditions per place. [2024-10-13 07:15:35,399 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 194 selfloop transitions, 32 changer transitions 6/237 dead transitions. [2024-10-13 07:15:35,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 237 transitions, 2982 flow [2024-10-13 07:15:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:15:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:15:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-13 07:15:35,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-13 07:15:35,400 INFO L175 Difference]: Start difference. First operand has 82 places, 114 transitions, 1260 flow. Second operand 5 states and 126 transitions. [2024-10-13 07:15:35,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 237 transitions, 2982 flow [2024-10-13 07:15:36,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 237 transitions, 2950 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-10-13 07:15:36,048 INFO L231 Difference]: Finished difference. Result has 88 places, 124 transitions, 1464 flow [2024-10-13 07:15:36,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1464, PETRI_PLACES=88, PETRI_TRANSITIONS=124} [2024-10-13 07:15:36,049 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-10-13 07:15:36,049 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 124 transitions, 1464 flow [2024-10-13 07:15:36,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:36,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:36,049 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, 1, 1] [2024-10-13 07:15:36,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 07:15:36,050 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:15:36,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash 778075769, now seen corresponding path program 4 times [2024-10-13 07:15:36,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:36,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077600754] [2024-10-13 07:15:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:36,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:15:36,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:36,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077600754] [2024-10-13 07:15:36,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077600754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:15:36,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:15:36,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:15:36,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018623915] [2024-10-13 07:15:36,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:15:36,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:15:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:15:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:15:36,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-13 07:15:36,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 124 transitions, 1464 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:36,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:36,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-13 07:15:36,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand