./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:41:35,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:41:35,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:41:35,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:41:35,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:41:35,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:41:35,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:41:35,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:41:35,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:41:35,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:41:35,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:41:35,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:41:35,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:41:35,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:41:35,954 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:41:35,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:41:35,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:41:35,955 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:41:35,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:41:35,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:41:35,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:41:35,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:41:35,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:41:35,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:41:35,960 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:41:35,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:41:35,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:41:35,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:41:35,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:41:35,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:41:35,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:41:35,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:41:35,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:41:35,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:41:35,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:41:35,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:41:35,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:41:35,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:41:35,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:41:35,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:41:35,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:41:35,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:41:35,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-11-09 02:41:36,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:41:36,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:41:36,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:41:36,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:41:36,256 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:41:36,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-09 02:41:37,708 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:41:37,926 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:41:37,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2024-11-09 02:41:37,941 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d566f6d/eecd2575f3034dd6a143df911b260814/FLAGa93636574 [2024-11-09 02:41:37,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d566f6d/eecd2575f3034dd6a143df911b260814 [2024-11-09 02:41:37,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:41:37,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:41:37,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:41:37,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:41:37,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:41:37,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:41:37" (1/1) ... [2024-11-09 02:41:37,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1f43e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:37, skipping insertion in model container [2024-11-09 02:41:37,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:41:37" (1/1) ... [2024-11-09 02:41:37,997 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:41:38,269 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-11-09 02:41:38,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:41:38,310 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:41:38,445 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-11-09 02:41:38,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:41:38,473 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:41:38,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38 WrapperNode [2024-11-09 02:41:38,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:41:38,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:41:38,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:41:38,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:41:38,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,576 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1559 [2024-11-09 02:41:38,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:41:38,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:41:38,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:41:38,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:41:38,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,639 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-11-09 02:41:38,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:41:38,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:41:38,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:41:38,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:41:38,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (1/1) ... [2024-11-09 02:41:38,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:41:38,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:38,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:41:38,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:41:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:41:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:41:38,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:41:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:41:38,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:41:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:41:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:41:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:41:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:41:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:41:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:41:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:41:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:41:38,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:41:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:41:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:41:38,846 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:41:39,027 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:41:39,029 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:41:40,647 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:41:40,647 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:41:42,223 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:41:42,224 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-09 02:41:42,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:41:42 BoogieIcfgContainer [2024-11-09 02:41:42,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:41:42,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:41:42,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:41:42,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:41:42,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:41:37" (1/3) ... [2024-11-09 02:41:42,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e30cca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:41:42, skipping insertion in model container [2024-11-09 02:41:42,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:38" (2/3) ... [2024-11-09 02:41:42,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e30cca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:41:42, skipping insertion in model container [2024-11-09 02:41:42,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:41:42" (3/3) ... [2024-11-09 02:41:42,233 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-11-09 02:41:42,250 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:41:42,251 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:41:42,251 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:41:42,510 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:41:42,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 94 transitions, 202 flow [2024-11-09 02:41:42,694 INFO L124 PetriNetUnfolderBase]: 28/92 cut-off events. [2024-11-09 02:41:42,695 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:41:42,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 28/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 242 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2024-11-09 02:41:42,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 94 transitions, 202 flow [2024-11-09 02:41:42,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 91 transitions, 194 flow [2024-11-09 02:41:42,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:41:42,720 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;@13d6e680, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:41:42,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:41:42,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:41:42,768 INFO L124 PetriNetUnfolderBase]: 28/90 cut-off events. [2024-11-09 02:41:42,768 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:41:42,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:42,769 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, 1] [2024-11-09 02:41:42,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:42,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash -901911410, now seen corresponding path program 1 times [2024-11-09 02:41:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904371218] [2024-11-09 02:41:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:41:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904371218] [2024-11-09 02:41:43,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904371218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:43,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:43,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:41:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913539461] [2024-11-09 02:41:43,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:43,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:41:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:43,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:41:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:41:43,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:41:43,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:43,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:43,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:41:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:44,854 INFO L124 PetriNetUnfolderBase]: 2502/3740 cut-off events. [2024-11-09 02:41:44,855 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-09 02:41:44,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 3740 events. 2502/3740 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17699 event pairs, 1702 based on Foata normal form. 0/2940 useless extension candidates. Maximal degree in co-relation 7372. Up to 3738 conditions per place. [2024-11-09 02:41:44,883 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 84 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-09 02:41:44,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 366 flow [2024-11-09 02:41:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:41:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:41:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-09 02:41:44,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36524822695035464 [2024-11-09 02:41:44,900 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 194 flow. Second operand 3 states and 103 transitions. [2024-11-09 02:41:44,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 366 flow [2024-11-09 02:41:44,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:41:44,912 INFO L231 Difference]: Finished difference. Result has 69 places, 89 transitions, 200 flow [2024-11-09 02:41:44,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=69, PETRI_TRANSITIONS=89} [2024-11-09 02:41:44,920 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-11-09 02:41:44,920 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 89 transitions, 200 flow [2024-11-09 02:41:44,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:44,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:44,921 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] [2024-11-09 02:41:44,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:41:44,922 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:44,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1016506388, now seen corresponding path program 1 times [2024-11-09 02:41:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:44,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509534657] [2024-11-09 02:41:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:41:45,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:45,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509534657] [2024-11-09 02:41:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509534657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:45,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:41:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245531055] [2024-11-09 02:41:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:45,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:41:45,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:41:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:41:45,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:41:45,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 89 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:45,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:45,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:41:45,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:46,193 INFO L124 PetriNetUnfolderBase]: 2502/3742 cut-off events. [2024-11-09 02:41:46,193 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-09 02:41:46,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3742 events. 2502/3742 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17721 event pairs, 1702 based on Foata normal form. 0/2944 useless extension candidates. Maximal degree in co-relation 7472. Up to 3738 conditions per place. [2024-11-09 02:41:46,210 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 82 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-11-09 02:41:46,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 384 flow [2024-11-09 02:41:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:41:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:41:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-09 02:41:46,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35815602836879434 [2024-11-09 02:41:46,212 INFO L175 Difference]: Start difference. First operand has 69 places, 89 transitions, 200 flow. Second operand 3 states and 101 transitions. [2024-11-09 02:41:46,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 384 flow [2024-11-09 02:41:46,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 91 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:46,215 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 230 flow [2024-11-09 02:41:46,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2024-11-09 02:41:46,216 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-11-09 02:41:46,216 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 230 flow [2024-11-09 02:41:46,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:46,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:46,217 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, 1, 1] [2024-11-09 02:41:46,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:41:46,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:46,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1952730255, now seen corresponding path program 1 times [2024-11-09 02:41:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:46,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118956607] [2024-11-09 02:41:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:41:46,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:46,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118956607] [2024-11-09 02:41:46,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118956607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:46,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380570750] [2024-11-09 02:41:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:46,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:46,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:46,438 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) [2024-11-09 02:41:46,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:41:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:46,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:41:46,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:41:46,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:41:46,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380570750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:46,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:46,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-09 02:41:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3446848] [2024-11-09 02:41:46,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:46,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:41:46,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:46,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:41:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:41:46,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:41:46,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:46,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:46,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:41:46,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:48,262 INFO L124 PetriNetUnfolderBase]: 2502/3762 cut-off events. [2024-11-09 02:41:48,263 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-09 02:41:48,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3762 events. 2502/3762 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17721 event pairs, 1702 based on Foata normal form. 8/2973 useless extension candidates. Maximal degree in co-relation 7481. Up to 3738 conditions per place. [2024-11-09 02:41:48,281 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 78 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-11-09 02:41:48,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 514 flow [2024-11-09 02:41:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:41:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:41:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-11-09 02:41:48,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2047872340425532 [2024-11-09 02:41:48,284 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 230 flow. Second operand 8 states and 154 transitions. [2024-11-09 02:41:48,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 514 flow [2024-11-09 02:41:48,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:48,288 INFO L231 Difference]: Finished difference. Result has 80 places, 111 transitions, 408 flow [2024-11-09 02:41:48,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=408, PETRI_PLACES=80, PETRI_TRANSITIONS=111} [2024-11-09 02:41:48,289 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-11-09 02:41:48,289 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 111 transitions, 408 flow [2024-11-09 02:41:48,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:48,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:48,290 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:48,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:41:48,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:48,491 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:48,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1433088952, now seen corresponding path program 1 times [2024-11-09 02:41:48,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:48,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867360942] [2024-11-09 02:41:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 02:41:48,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:48,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867360942] [2024-11-09 02:41:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867360942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:48,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231333568] [2024-11-09 02:41:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:48,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:48,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:48,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:48,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:41:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:49,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:41:49,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 02:41:49,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 02:41:49,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231333568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:49,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:49,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:41:49,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376010985] [2024-11-09 02:41:49,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:49,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:41:49,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:41:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:41:49,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:41:49,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 111 transitions, 408 flow. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:49,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:49,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:41:49,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:50,483 INFO L124 PetriNetUnfolderBase]: 2502/3774 cut-off events. [2024-11-09 02:41:50,484 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-09 02:41:50,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 3774 events. 2502/3774 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17720 event pairs, 1702 based on Foata normal form. 11/2992 useless extension candidates. Maximal degree in co-relation 7495. Up to 3738 conditions per place. [2024-11-09 02:41:50,506 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 78 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-11-09 02:41:50,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 708 flow [2024-11-09 02:41:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:41:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:41:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-11-09 02:41:50,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.16150870406189555 [2024-11-09 02:41:50,508 INFO L175 Difference]: Start difference. First operand has 80 places, 111 transitions, 408 flow. Second operand 11 states and 167 transitions. [2024-11-09 02:41:50,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 708 flow [2024-11-09 02:41:50,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 654 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-09 02:41:50,513 INFO L231 Difference]: Finished difference. Result has 88 places, 123 transitions, 524 flow [2024-11-09 02:41:50,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=524, PETRI_PLACES=88, PETRI_TRANSITIONS=123} [2024-11-09 02:41:50,514 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2024-11-09 02:41:50,515 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 123 transitions, 524 flow [2024-11-09 02:41:50,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:50,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:50,515 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:50,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:41:50,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 02:41:50,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:50,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash 719978097, now seen corresponding path program 2 times [2024-11-09 02:41:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:50,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394267979] [2024-11-09 02:41:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 02:41:51,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394267979] [2024-11-09 02:41:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394267979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327631832] [2024-11-09 02:41:51,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:41:51,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:51,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:51,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:51,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:41:51,506 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:41:51,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:41:51,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:41:51,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:51,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:41:51,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-11-09 02:41:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 02:41:51,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:41:51,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327631832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:51,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:41:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-09 02:41:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261374306] [2024-11-09 02:41:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:51,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:41:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:41:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:41:51,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:41:51,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 123 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:51,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:51,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:41:51,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:53,558 INFO L124 PetriNetUnfolderBase]: 3916/5918 cut-off events. [2024-11-09 02:41:53,559 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:41:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 5918 events. 3916/5918 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30625 event pairs, 1413 based on Foata normal form. 1/4715 useless extension candidates. Maximal degree in co-relation 11775. Up to 3014 conditions per place. [2024-11-09 02:41:53,589 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 197 selfloop transitions, 22 changer transitions 9/229 dead transitions. [2024-11-09 02:41:53,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 229 transitions, 1198 flow [2024-11-09 02:41:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:41:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:41:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-09 02:41:53,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44468085106382976 [2024-11-09 02:41:53,591 INFO L175 Difference]: Start difference. First operand has 88 places, 123 transitions, 524 flow. Second operand 5 states and 209 transitions. [2024-11-09 02:41:53,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 229 transitions, 1198 flow [2024-11-09 02:41:53,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 229 transitions, 1122 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-09 02:41:53,597 INFO L231 Difference]: Finished difference. Result has 91 places, 141 transitions, 591 flow [2024-11-09 02:41:53,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=91, PETRI_TRANSITIONS=141} [2024-11-09 02:41:53,599 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-11-09 02:41:53,599 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 141 transitions, 591 flow [2024-11-09 02:41:53,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:53,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:53,599 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:41:53,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:41:53,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:53,805 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:53,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -489758041, now seen corresponding path program 3 times [2024-11-09 02:41:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741133641] [2024-11-09 02:41:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 02:41:54,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741133641] [2024-11-09 02:41:54,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741133641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196935832] [2024-11-09 02:41:54,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:41:54,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:54,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:54,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:41:54,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:41:54,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:41:54,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:41:54,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:54,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:41:54,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-11-09 02:41:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 02:41:54,679 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:41:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196935832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:54,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:41:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-09 02:41:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454246034] [2024-11-09 02:41:54,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:54,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:41:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:41:54,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:41:54,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:41:54,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 141 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:54,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:54,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:41:54,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:56,213 INFO L124 PetriNetUnfolderBase]: 4031/6134 cut-off events. [2024-11-09 02:41:56,214 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-11-09 02:41:56,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14752 conditions, 6134 events. 4031/6134 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 32437 event pairs, 1419 based on Foata normal form. 1/4899 useless extension candidates. Maximal degree in co-relation 14718. Up to 3289 conditions per place. [2024-11-09 02:41:56,240 INFO L140 encePairwiseOnDemand]: 73/94 looper letters, 195 selfloop transitions, 22 changer transitions 9/227 dead transitions. [2024-11-09 02:41:56,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 227 transitions, 1242 flow [2024-11-09 02:41:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:41:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:41:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-09 02:41:56,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44042553191489364 [2024-11-09 02:41:56,243 INFO L175 Difference]: Start difference. First operand has 91 places, 141 transitions, 591 flow. Second operand 5 states and 207 transitions. [2024-11-09 02:41:56,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 227 transitions, 1242 flow [2024-11-09 02:41:56,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 227 transitions, 1234 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:56,257 INFO L231 Difference]: Finished difference. Result has 96 places, 141 transitions, 641 flow [2024-11-09 02:41:56,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=641, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2024-11-09 02:41:56,260 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-11-09 02:41:56,261 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 641 flow [2024-11-09 02:41:56,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:56,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:56,261 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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] [2024-11-09 02:41:56,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:41:56,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:56,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:56,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2113688169, now seen corresponding path program 1 times [2024-11-09 02:41:56,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:56,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975545789] [2024-11-09 02:41:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:56,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 02:41:56,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975545789] [2024-11-09 02:41:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975545789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785664847] [2024-11-09 02:41:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:56,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:56,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:56,833 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:56,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:41:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:57,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:41:57,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 02:41:57,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 02:41:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785664847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:57,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:57,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-09 02:41:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485065771] [2024-11-09 02:41:57,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:57,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:41:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:41:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=205, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:41:57,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:41:57,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 641 flow. Second operand has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:57,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:57,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:41:57,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:59,222 INFO L124 PetriNetUnfolderBase]: 4018/6124 cut-off events. [2024-11-09 02:41:59,222 INFO L125 PetriNetUnfolderBase]: For 2584/2584 co-relation queries the response was YES. [2024-11-09 02:41:59,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15661 conditions, 6124 events. 4018/6124 cut-off events. For 2584/2584 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 31911 event pairs, 2847 based on Foata normal form. 14/4902 useless extension candidates. Maximal degree in co-relation 15624. Up to 6072 conditions per place. [2024-11-09 02:41:59,249 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 96 selfloop transitions, 58 changer transitions 0/155 dead transitions. [2024-11-09 02:41:59,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 155 transitions, 1061 flow [2024-11-09 02:41:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:41:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:41:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 192 transitions. [2024-11-09 02:41:59,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.1458966565349544 [2024-11-09 02:41:59,252 INFO L175 Difference]: Start difference. First operand has 96 places, 141 transitions, 641 flow. Second operand 14 states and 192 transitions. [2024-11-09 02:41:59,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 155 transitions, 1061 flow [2024-11-09 02:41:59,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 1036 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 02:41:59,269 INFO L231 Difference]: Finished difference. Result has 113 places, 155 transitions, 942 flow [2024-11-09 02:41:59,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=942, PETRI_PLACES=113, PETRI_TRANSITIONS=155} [2024-11-09 02:41:59,270 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 43 predicate places. [2024-11-09 02:41:59,270 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 155 transitions, 942 flow [2024-11-09 02:41:59,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:41:59,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:59,271 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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] [2024-11-09 02:41:59,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:41:59,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:59,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:41:59,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 642830997, now seen corresponding path program 2 times [2024-11-09 02:41:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111631612] [2024-11-09 02:41:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 02:42:00,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111631612] [2024-11-09 02:42:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111631612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:00,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891360598] [2024-11-09 02:42:00,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:00,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:00,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:00,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:42:00,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:42:00,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:00,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 02:42:00,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:00,806 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-09 02:42:00,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 9 [2024-11-09 02:42:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-09 02:42:00,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:42:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891360598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:00,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:42:00,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2024-11-09 02:42:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143028541] [2024-11-09 02:42:00,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:00,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:42:00,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:42:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:42:00,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:00,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 155 transitions, 942 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:00,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:00,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:00,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:02,574 INFO L124 PetriNetUnfolderBase]: 4949/7803 cut-off events. [2024-11-09 02:42:02,575 INFO L125 PetriNetUnfolderBase]: For 1677/1677 co-relation queries the response was YES. [2024-11-09 02:42:02,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19341 conditions, 7803 events. 4949/7803 cut-off events. For 1677/1677 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 45898 event pairs, 919 based on Foata normal form. 64/6387 useless extension candidates. Maximal degree in co-relation 19005. Up to 2348 conditions per place. [2024-11-09 02:42:02,614 INFO L140 encePairwiseOnDemand]: 71/94 looper letters, 288 selfloop transitions, 65 changer transitions 11/365 dead transitions. [2024-11-09 02:42:02,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 365 transitions, 2247 flow [2024-11-09 02:42:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:42:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:42:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 322 transitions. [2024-11-09 02:42:02,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42819148936170215 [2024-11-09 02:42:02,617 INFO L175 Difference]: Start difference. First operand has 113 places, 155 transitions, 942 flow. Second operand 8 states and 322 transitions. [2024-11-09 02:42:02,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 365 transitions, 2247 flow [2024-11-09 02:42:02,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 365 transitions, 2175 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:02,635 INFO L231 Difference]: Finished difference. Result has 122 places, 199 transitions, 1298 flow [2024-11-09 02:42:02,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=122, PETRI_TRANSITIONS=199} [2024-11-09 02:42:02,636 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 52 predicate places. [2024-11-09 02:42:02,636 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 199 transitions, 1298 flow [2024-11-09 02:42:02,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:02,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:02,637 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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] [2024-11-09 02:42:02,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:02,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:02,837 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:02,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash 499129417, now seen corresponding path program 3 times [2024-11-09 02:42:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:02,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736507737] [2024-11-09 02:42:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:02,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 02:42:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:03,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736507737] [2024-11-09 02:42:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736507737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:03,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153193970] [2024-11-09 02:42:03,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:03,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:03,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:03,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:03,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:42:03,994 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:42:03,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:03,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:42:04,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-09 02:42:04,063 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:42:04,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153193970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:04,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:42:04,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-11-09 02:42:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034461328] [2024-11-09 02:42:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:04,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:42:04,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:04,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 199 transitions, 1298 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:04,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:04,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:04,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:05,620 INFO L124 PetriNetUnfolderBase]: 4849/7650 cut-off events. [2024-11-09 02:42:05,620 INFO L125 PetriNetUnfolderBase]: For 4720/4720 co-relation queries the response was YES. [2024-11-09 02:42:05,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21841 conditions, 7650 events. 4849/7650 cut-off events. For 4720/4720 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 44105 event pairs, 3416 based on Foata normal form. 45/6225 useless extension candidates. Maximal degree in co-relation 21517. Up to 7229 conditions per place. [2024-11-09 02:42:05,661 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 205 selfloop transitions, 1 changer transitions 31/238 dead transitions. [2024-11-09 02:42:05,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 238 transitions, 1850 flow [2024-11-09 02:42:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-09 02:42:05,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-11-09 02:42:05,663 INFO L175 Difference]: Start difference. First operand has 122 places, 199 transitions, 1298 flow. Second operand 3 states and 149 transitions. [2024-11-09 02:42:05,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 238 transitions, 1850 flow [2024-11-09 02:42:05,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 238 transitions, 1850 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:42:05,695 INFO L231 Difference]: Finished difference. Result has 125 places, 191 transitions, 1257 flow [2024-11-09 02:42:05,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1257, PETRI_PLACES=125, PETRI_TRANSITIONS=191} [2024-11-09 02:42:05,696 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 55 predicate places. [2024-11-09 02:42:05,696 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 191 transitions, 1257 flow [2024-11-09 02:42:05,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:05,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:05,697 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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] [2024-11-09 02:42:05,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:42:05,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:05,901 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:05,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1456462089, now seen corresponding path program 1 times [2024-11-09 02:42:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:05,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519417072] [2024-11-09 02:42:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:05,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 02:42:06,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:06,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519417072] [2024-11-09 02:42:06,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519417072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872729486] [2024-11-09 02:42:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:06,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:06,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:06,564 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:06,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:42:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:07,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 02:42:07,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 02:42:07,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 02:42:07,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872729486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:07,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:07,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2024-11-09 02:42:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014800150] [2024-11-09 02:42:07,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:07,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 02:42:07,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 02:42:07,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1054, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 02:42:07,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:07,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 191 transitions, 1257 flow. Second operand has 41 states, 41 states have (on average 4.878048780487805) internal successors, (200), 41 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:07,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:07,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:07,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:09,806 INFO L124 PetriNetUnfolderBase]: 4550/7149 cut-off events. [2024-11-09 02:42:09,807 INFO L125 PetriNetUnfolderBase]: For 4824/4824 co-relation queries the response was YES. [2024-11-09 02:42:09,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20630 conditions, 7149 events. 4550/7149 cut-off events. For 4824/4824 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 40324 event pairs, 3355 based on Foata normal form. 2/5829 useless extension candidates. Maximal degree in co-relation 20425. Up to 7093 conditions per place. [2024-11-09 02:42:09,842 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 132 selfloop transitions, 60 changer transitions 0/193 dead transitions. [2024-11-09 02:42:09,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 193 transitions, 1661 flow [2024-11-09 02:42:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 02:42:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 02:42:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 198 transitions. [2024-11-09 02:42:09,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.10531914893617021 [2024-11-09 02:42:09,845 INFO L175 Difference]: Start difference. First operand has 125 places, 191 transitions, 1257 flow. Second operand 20 states and 198 transitions. [2024-11-09 02:42:09,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 193 transitions, 1661 flow [2024-11-09 02:42:09,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 193 transitions, 1647 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:09,889 INFO L231 Difference]: Finished difference. Result has 140 places, 193 transitions, 1393 flow [2024-11-09 02:42:09,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1393, PETRI_PLACES=140, PETRI_TRANSITIONS=193} [2024-11-09 02:42:09,890 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 70 predicate places. [2024-11-09 02:42:09,891 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 193 transitions, 1393 flow [2024-11-09 02:42:09,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.878048780487805) internal successors, (200), 41 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:09,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:09,891 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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] [2024-11-09 02:42:09,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 02:42:10,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 02:42:10,092 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:10,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash -239019205, now seen corresponding path program 2 times [2024-11-09 02:42:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:10,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632806541] [2024-11-09 02:42:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632806541] [2024-11-09 02:42:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632806541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368502345] [2024-11-09 02:42:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:11,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:11,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:11,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 193 transitions, 1393 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:11,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:11,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:11,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:12,605 INFO L124 PetriNetUnfolderBase]: 4716/7503 cut-off events. [2024-11-09 02:42:12,605 INFO L125 PetriNetUnfolderBase]: For 4401/4401 co-relation queries the response was YES. [2024-11-09 02:42:12,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21226 conditions, 7503 events. 4716/7503 cut-off events. For 4401/4401 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 44018 event pairs, 2005 based on Foata normal form. 63/6185 useless extension candidates. Maximal degree in co-relation 20841. Up to 4093 conditions per place. [2024-11-09 02:42:12,642 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 222 selfloop transitions, 34 changer transitions 3/260 dead transitions. [2024-11-09 02:42:12,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 260 transitions, 2187 flow [2024-11-09 02:42:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-09 02:42:12,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-11-09 02:42:12,643 INFO L175 Difference]: Start difference. First operand has 140 places, 193 transitions, 1393 flow. Second operand 3 states and 149 transitions. [2024-11-09 02:42:12,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 260 transitions, 2187 flow [2024-11-09 02:42:12,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 260 transitions, 2035 flow, removed 18 selfloop flow, removed 14 redundant places. [2024-11-09 02:42:12,676 INFO L231 Difference]: Finished difference. Result has 130 places, 211 transitions, 1547 flow [2024-11-09 02:42:12,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1547, PETRI_PLACES=130, PETRI_TRANSITIONS=211} [2024-11-09 02:42:12,677 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-09 02:42:12,677 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 211 transitions, 1547 flow [2024-11-09 02:42:12,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:12,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:12,677 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1] [2024-11-09 02:42:12,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:42:12,678 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:12,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1002001847, now seen corresponding path program 1 times [2024-11-09 02:42:12,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:12,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524762766] [2024-11-09 02:42:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524762766] [2024-11-09 02:42:13,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524762766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:13,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130710357] [2024-11-09 02:42:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:13,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:13,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:13,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 211 transitions, 1547 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:13,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:13,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:14,654 INFO L124 PetriNetUnfolderBase]: 4456/7087 cut-off events. [2024-11-09 02:42:14,654 INFO L125 PetriNetUnfolderBase]: For 7922/7922 co-relation queries the response was YES. [2024-11-09 02:42:14,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21278 conditions, 7087 events. 4456/7087 cut-off events. For 7922/7922 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40726 event pairs, 2964 based on Foata normal form. 78/5829 useless extension candidates. Maximal degree in co-relation 20952. Up to 5958 conditions per place. [2024-11-09 02:42:14,685 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 234 selfloop transitions, 4 changer transitions 1/240 dead transitions. [2024-11-09 02:42:14,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 240 transitions, 2074 flow [2024-11-09 02:42:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-09 02:42:14,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-11-09 02:42:14,686 INFO L175 Difference]: Start difference. First operand has 130 places, 211 transitions, 1547 flow. Second operand 3 states and 135 transitions. [2024-11-09 02:42:14,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 240 transitions, 2074 flow [2024-11-09 02:42:14,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 240 transitions, 2026 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:14,723 INFO L231 Difference]: Finished difference. Result has 132 places, 204 transitions, 1456 flow [2024-11-09 02:42:14,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1456, PETRI_PLACES=132, PETRI_TRANSITIONS=204} [2024-11-09 02:42:14,724 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 62 predicate places. [2024-11-09 02:42:14,724 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 204 transitions, 1456 flow [2024-11-09 02:42:14,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:14,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:14,725 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1] [2024-11-09 02:42:14,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:42:14,725 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:14,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1737112089, now seen corresponding path program 1 times [2024-11-09 02:42:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:14,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257299735] [2024-11-09 02:42:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:15,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257299735] [2024-11-09 02:42:15,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257299735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:15,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:15,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:15,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096817937] [2024-11-09 02:42:15,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:15,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:15,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:15,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:15,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 204 transitions, 1456 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:15,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:15,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:15,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:16,823 INFO L124 PetriNetUnfolderBase]: 4498/7196 cut-off events. [2024-11-09 02:42:16,823 INFO L125 PetriNetUnfolderBase]: For 6049/6049 co-relation queries the response was YES. [2024-11-09 02:42:16,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21516 conditions, 7196 events. 4498/7196 cut-off events. For 6049/6049 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41226 event pairs, 2936 based on Foata normal form. 73/5911 useless extension candidates. Maximal degree in co-relation 21188. Up to 5962 conditions per place. [2024-11-09 02:42:16,864 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 229 selfloop transitions, 5 changer transitions 1/236 dead transitions. [2024-11-09 02:42:16,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 236 transitions, 2008 flow [2024-11-09 02:42:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-11-09 02:42:16,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-11-09 02:42:16,866 INFO L175 Difference]: Start difference. First operand has 132 places, 204 transitions, 1456 flow. Second operand 3 states and 132 transitions. [2024-11-09 02:42:16,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 236 transitions, 2008 flow [2024-11-09 02:42:16,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 236 transitions, 1994 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:16,891 INFO L231 Difference]: Finished difference. Result has 133 places, 201 transitions, 1437 flow [2024-11-09 02:42:16,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1437, PETRI_PLACES=133, PETRI_TRANSITIONS=201} [2024-11-09 02:42:16,891 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 63 predicate places. [2024-11-09 02:42:16,892 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 201 transitions, 1437 flow [2024-11-09 02:42:16,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:16,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:16,892 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1] [2024-11-09 02:42:16,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:42:16,892 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:16,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash -101330679, now seen corresponding path program 1 times [2024-11-09 02:42:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547117726] [2024-11-09 02:42:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:17,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547117726] [2024-11-09 02:42:17,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547117726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:17,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:17,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:17,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700810717] [2024-11-09 02:42:17,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:17,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:17,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:17,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:17,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 201 transitions, 1437 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:17,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:17,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:17,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:19,355 INFO L124 PetriNetUnfolderBase]: 4675/7557 cut-off events. [2024-11-09 02:42:19,355 INFO L125 PetriNetUnfolderBase]: For 6614/6614 co-relation queries the response was YES. [2024-11-09 02:42:19,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22597 conditions, 7557 events. 4675/7557 cut-off events. For 6614/6614 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 44795 event pairs, 3512 based on Foata normal form. 6/6160 useless extension candidates. Maximal degree in co-relation 22268. Up to 7114 conditions per place. [2024-11-09 02:42:19,385 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 225 selfloop transitions, 6 changer transitions 10/242 dead transitions. [2024-11-09 02:42:19,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 242 transitions, 2066 flow [2024-11-09 02:42:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-09 02:42:19,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3670212765957447 [2024-11-09 02:42:19,387 INFO L175 Difference]: Start difference. First operand has 133 places, 201 transitions, 1437 flow. Second operand 4 states and 138 transitions. [2024-11-09 02:42:19,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 242 transitions, 2066 flow [2024-11-09 02:42:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 242 transitions, 2052 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:19,411 INFO L231 Difference]: Finished difference. Result has 137 places, 201 transitions, 1452 flow [2024-11-09 02:42:19,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1452, PETRI_PLACES=137, PETRI_TRANSITIONS=201} [2024-11-09 02:42:19,412 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 67 predicate places. [2024-11-09 02:42:19,412 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 201 transitions, 1452 flow [2024-11-09 02:42:19,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:19,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:19,413 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1] [2024-11-09 02:42:19,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:42:19,413 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:19,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash -310640127, now seen corresponding path program 2 times [2024-11-09 02:42:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:19,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487672199] [2024-11-09 02:42:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:20,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487672199] [2024-11-09 02:42:20,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487672199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:20,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:20,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:20,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188955558] [2024-11-09 02:42:20,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:20,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:20,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:20,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:20,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:20,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:20,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 201 transitions, 1452 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:20,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:20,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:20,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:21,981 INFO L124 PetriNetUnfolderBase]: 4829/7866 cut-off events. [2024-11-09 02:42:21,981 INFO L125 PetriNetUnfolderBase]: For 6981/6981 co-relation queries the response was YES. [2024-11-09 02:42:22,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23209 conditions, 7866 events. 4829/7866 cut-off events. For 6981/6981 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47838 event pairs, 1633 based on Foata normal form. 1/6428 useless extension candidates. Maximal degree in co-relation 23115. Up to 5092 conditions per place. [2024-11-09 02:42:22,019 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 238 selfloop transitions, 38 changer transitions 10/287 dead transitions. [2024-11-09 02:42:22,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 287 transitions, 2282 flow [2024-11-09 02:42:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-11-09 02:42:22,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41914893617021276 [2024-11-09 02:42:22,021 INFO L175 Difference]: Start difference. First operand has 137 places, 201 transitions, 1452 flow. Second operand 5 states and 197 transitions. [2024-11-09 02:42:22,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 287 transitions, 2282 flow [2024-11-09 02:42:22,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 287 transitions, 2271 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:22,057 INFO L231 Difference]: Finished difference. Result has 140 places, 201 transitions, 1532 flow [2024-11-09 02:42:22,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1532, PETRI_PLACES=140, PETRI_TRANSITIONS=201} [2024-11-09 02:42:22,057 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 70 predicate places. [2024-11-09 02:42:22,058 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 201 transitions, 1532 flow [2024-11-09 02:42:22,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:22,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:22,058 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 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, 1] [2024-11-09 02:42:22,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 02:42:22,058 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:22,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash -825460671, now seen corresponding path program 1 times [2024-11-09 02:42:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:22,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459869846] [2024-11-09 02:42:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-09 02:42:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459869846] [2024-11-09 02:42:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459869846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:22,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:22,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:22,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356100420] [2024-11-09 02:42:22,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:22,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:22,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:22,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 201 transitions, 1532 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:22,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:22,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:24,266 INFO L124 PetriNetUnfolderBase]: 4782/7779 cut-off events. [2024-11-09 02:42:24,267 INFO L125 PetriNetUnfolderBase]: For 9118/9118 co-relation queries the response was YES. [2024-11-09 02:42:24,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23601 conditions, 7779 events. 4782/7779 cut-off events. For 9118/9118 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 47501 event pairs, 1400 based on Foata normal form. 13/6357 useless extension candidates. Maximal degree in co-relation 23495. Up to 6790 conditions per place. [2024-11-09 02:42:24,301 INFO L140 encePairwiseOnDemand]: 79/94 looper letters, 211 selfloop transitions, 14 changer transitions 2/228 dead transitions. [2024-11-09 02:42:24,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 228 transitions, 2031 flow [2024-11-09 02:42:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-09 02:42:24,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-11-09 02:42:24,303 INFO L175 Difference]: Start difference. First operand has 140 places, 201 transitions, 1532 flow. Second operand 3 states and 134 transitions. [2024-11-09 02:42:24,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 228 transitions, 2031 flow [2024-11-09 02:42:24,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 228 transitions, 1989 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:24,339 INFO L231 Difference]: Finished difference. Result has 138 places, 199 transitions, 1504 flow [2024-11-09 02:42:24,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1504, PETRI_PLACES=138, PETRI_TRANSITIONS=199} [2024-11-09 02:42:24,340 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 68 predicate places. [2024-11-09 02:42:24,340 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 199 transitions, 1504 flow [2024-11-09 02:42:24,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:24,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:24,340 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2024-11-09 02:42:24,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 02:42:24,340 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:24,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1436507131, now seen corresponding path program 1 times [2024-11-09 02:42:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:24,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245058228] [2024-11-09 02:42:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:24,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:25,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245058228] [2024-11-09 02:42:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245058228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:25,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:25,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158586415] [2024-11-09 02:42:25,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:25,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:25,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:25,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 199 transitions, 1504 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:25,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:25,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:25,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:27,055 INFO L124 PetriNetUnfolderBase]: 4820/7997 cut-off events. [2024-11-09 02:42:27,055 INFO L125 PetriNetUnfolderBase]: For 8240/8240 co-relation queries the response was YES. [2024-11-09 02:42:27,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24006 conditions, 7997 events. 4820/7997 cut-off events. For 8240/8240 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 50243 event pairs, 2367 based on Foata normal form. 100/6695 useless extension candidates. Maximal degree in co-relation 23672. Up to 4019 conditions per place. [2024-11-09 02:42:27,098 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 213 selfloop transitions, 26 changer transitions 7/247 dead transitions. [2024-11-09 02:42:27,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 247 transitions, 2148 flow [2024-11-09 02:42:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:27,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-09 02:42:27,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-11-09 02:42:27,099 INFO L175 Difference]: Start difference. First operand has 138 places, 199 transitions, 1504 flow. Second operand 3 states and 143 transitions. [2024-11-09 02:42:27,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 247 transitions, 2148 flow [2024-11-09 02:42:27,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 247 transitions, 2120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:27,134 INFO L231 Difference]: Finished difference. Result has 139 places, 201 transitions, 1609 flow [2024-11-09 02:42:27,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1609, PETRI_PLACES=139, PETRI_TRANSITIONS=201} [2024-11-09 02:42:27,135 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 69 predicate places. [2024-11-09 02:42:27,135 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 201 transitions, 1609 flow [2024-11-09 02:42:27,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:27,136 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2024-11-09 02:42:27,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 02:42:27,136 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:27,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1883375367, now seen corresponding path program 2 times [2024-11-09 02:42:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438838666] [2024-11-09 02:42:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438838666] [2024-11-09 02:42:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438838666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:28,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904927542] [2024-11-09 02:42:28,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:28,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:28,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 201 transitions, 1609 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:28,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:29,856 INFO L124 PetriNetUnfolderBase]: 4656/7709 cut-off events. [2024-11-09 02:42:29,856 INFO L125 PetriNetUnfolderBase]: For 9533/9533 co-relation queries the response was YES. [2024-11-09 02:42:29,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23530 conditions, 7709 events. 4656/7709 cut-off events. For 9533/9533 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47692 event pairs, 3361 based on Foata normal form. 54/6379 useless extension candidates. Maximal degree in co-relation 23197. Up to 6591 conditions per place. [2024-11-09 02:42:29,906 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 210 selfloop transitions, 12 changer transitions 8/231 dead transitions. [2024-11-09 02:42:29,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 231 transitions, 2033 flow [2024-11-09 02:42:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-09 02:42:29,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-11-09 02:42:29,908 INFO L175 Difference]: Start difference. First operand has 139 places, 201 transitions, 1609 flow. Second operand 3 states and 143 transitions. [2024-11-09 02:42:29,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 231 transitions, 2033 flow [2024-11-09 02:42:29,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 231 transitions, 2017 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:29,953 INFO L231 Difference]: Finished difference. Result has 140 places, 187 transitions, 1461 flow [2024-11-09 02:42:29,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1461, PETRI_PLACES=140, PETRI_TRANSITIONS=187} [2024-11-09 02:42:29,953 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 70 predicate places. [2024-11-09 02:42:29,953 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 187 transitions, 1461 flow [2024-11-09 02:42:29,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:29,954 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2024-11-09 02:42:29,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 02:42:29,954 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:29,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash -526379136, now seen corresponding path program 1 times [2024-11-09 02:42:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:29,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883401914] [2024-11-09 02:42:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:30,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883401914] [2024-11-09 02:42:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883401914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:30,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:30,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238729114] [2024-11-09 02:42:30,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:30,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:30,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:30,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 187 transitions, 1461 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:30,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:30,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:30,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:32,677 INFO L124 PetriNetUnfolderBase]: 4937/8300 cut-off events. [2024-11-09 02:42:32,677 INFO L125 PetriNetUnfolderBase]: For 8724/8724 co-relation queries the response was YES. [2024-11-09 02:42:32,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25034 conditions, 8300 events. 4937/8300 cut-off events. For 8724/8724 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 53496 event pairs, 3631 based on Foata normal form. 27/6867 useless extension candidates. Maximal degree in co-relation 24701. Up to 6985 conditions per place. [2024-11-09 02:42:32,715 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 213 selfloop transitions, 16 changer transitions 13/243 dead transitions. [2024-11-09 02:42:32,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 243 transitions, 2121 flow [2024-11-09 02:42:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-09 02:42:32,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-11-09 02:42:32,717 INFO L175 Difference]: Start difference. First operand has 140 places, 187 transitions, 1461 flow. Second operand 3 states and 151 transitions. [2024-11-09 02:42:32,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 243 transitions, 2121 flow [2024-11-09 02:42:32,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 243 transitions, 2109 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:32,752 INFO L231 Difference]: Finished difference. Result has 143 places, 185 transitions, 1497 flow [2024-11-09 02:42:32,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1497, PETRI_PLACES=143, PETRI_TRANSITIONS=185} [2024-11-09 02:42:32,753 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 73 predicate places. [2024-11-09 02:42:32,753 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 185 transitions, 1497 flow [2024-11-09 02:42:32,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:32,753 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2024-11-09 02:42:32,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 02:42:32,754 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:32,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash 609915800, now seen corresponding path program 2 times [2024-11-09 02:42:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483358975] [2024-11-09 02:42:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:33,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483358975] [2024-11-09 02:42:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483358975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:33,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:33,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019168678] [2024-11-09 02:42:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:33,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:33,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:33,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:33,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:33,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 185 transitions, 1497 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:33,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:33,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:33,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:35,612 INFO L124 PetriNetUnfolderBase]: 4629/7767 cut-off events. [2024-11-09 02:42:35,612 INFO L125 PetriNetUnfolderBase]: For 9230/9230 co-relation queries the response was YES. [2024-11-09 02:42:35,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 7767 events. 4629/7767 cut-off events. For 9230/9230 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 49448 event pairs, 2173 based on Foata normal form. 59/6424 useless extension candidates. Maximal degree in co-relation 23159. Up to 4129 conditions per place. [2024-11-09 02:42:35,647 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 201 selfloop transitions, 15 changer transitions 8/225 dead transitions. [2024-11-09 02:42:35,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 225 transitions, 1998 flow [2024-11-09 02:42:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-09 02:42:35,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-11-09 02:42:35,649 INFO L175 Difference]: Start difference. First operand has 143 places, 185 transitions, 1497 flow. Second operand 3 states and 143 transitions. [2024-11-09 02:42:35,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 225 transitions, 1998 flow [2024-11-09 02:42:35,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 225 transitions, 1980 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:35,691 INFO L231 Difference]: Finished difference. Result has 142 places, 178 transitions, 1401 flow [2024-11-09 02:42:35,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1401, PETRI_PLACES=142, PETRI_TRANSITIONS=178} [2024-11-09 02:42:35,691 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 72 predicate places. [2024-11-09 02:42:35,691 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 178 transitions, 1401 flow [2024-11-09 02:42:35,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:35,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:35,692 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-11-09 02:42:35,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 02:42:35,692 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:35,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:35,693 INFO L85 PathProgramCache]: Analyzing trace with hash 495274041, now seen corresponding path program 1 times [2024-11-09 02:42:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:35,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919164105] [2024-11-09 02:42:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:35,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919164105] [2024-11-09 02:42:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919164105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:35,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829786608] [2024-11-09 02:42:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:35,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:35,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:35,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 178 transitions, 1401 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) [2024-11-09 02:42:35,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:35,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:35,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:37,300 INFO L124 PetriNetUnfolderBase]: 4468/7504 cut-off events. [2024-11-09 02:42:37,301 INFO L125 PetriNetUnfolderBase]: For 8008/8008 co-relation queries the response was YES. [2024-11-09 02:42:37,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22587 conditions, 7504 events. 4468/7504 cut-off events. For 8008/8008 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47294 event pairs, 2547 based on Foata normal form. 41/6173 useless extension candidates. Maximal degree in co-relation 22255. Up to 4515 conditions per place. [2024-11-09 02:42:37,341 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 197 selfloop transitions, 7 changer transitions 16/221 dead transitions. [2024-11-09 02:42:37,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 221 transitions, 1934 flow [2024-11-09 02:42:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-09 02:42:37,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-11-09 02:42:37,343 INFO L175 Difference]: Start difference. First operand has 142 places, 178 transitions, 1401 flow. Second operand 3 states and 138 transitions. [2024-11-09 02:42:37,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 221 transitions, 1934 flow [2024-11-09 02:42:37,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 221 transitions, 1906 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:37,371 INFO L231 Difference]: Finished difference. Result has 142 places, 175 transitions, 1346 flow [2024-11-09 02:42:37,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1346, PETRI_PLACES=142, PETRI_TRANSITIONS=175} [2024-11-09 02:42:37,371 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 72 predicate places. [2024-11-09 02:42:37,372 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 175 transitions, 1346 flow [2024-11-09 02:42:37,372 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) [2024-11-09 02:42:37,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:37,372 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-11-09 02:42:37,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 02:42:37,373 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:37,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:37,373 INFO L85 PathProgramCache]: Analyzing trace with hash 455528441, now seen corresponding path program 2 times [2024-11-09 02:42:37,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:37,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217937109] [2024-11-09 02:42:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:37,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:37,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217937109] [2024-11-09 02:42:37,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217937109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:37,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:37,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990066131] [2024-11-09 02:42:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:37,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:37,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:37,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:37,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 175 transitions, 1346 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) [2024-11-09 02:42:37,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:37,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:37,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:38,830 INFO L124 PetriNetUnfolderBase]: 4419/7410 cut-off events. [2024-11-09 02:42:38,830 INFO L125 PetriNetUnfolderBase]: For 6203/6203 co-relation queries the response was YES. [2024-11-09 02:42:38,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22505 conditions, 7410 events. 4419/7410 cut-off events. For 6203/6203 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46189 event pairs, 3676 based on Foata normal form. 4/6050 useless extension candidates. Maximal degree in co-relation 22172. Up to 7043 conditions per place. [2024-11-09 02:42:38,868 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 186 selfloop transitions, 4 changer transitions 13/204 dead transitions. [2024-11-09 02:42:38,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 204 transitions, 1834 flow [2024-11-09 02:42:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-09 02:42:38,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-11-09 02:42:38,869 INFO L175 Difference]: Start difference. First operand has 142 places, 175 transitions, 1346 flow. Second operand 3 states and 120 transitions. [2024-11-09 02:42:38,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 204 transitions, 1834 flow [2024-11-09 02:42:38,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 204 transitions, 1828 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:38,895 INFO L231 Difference]: Finished difference. Result has 143 places, 173 transitions, 1322 flow [2024-11-09 02:42:38,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1322, PETRI_PLACES=143, PETRI_TRANSITIONS=173} [2024-11-09 02:42:38,896 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 73 predicate places. [2024-11-09 02:42:38,896 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 173 transitions, 1322 flow [2024-11-09 02:42:38,896 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) [2024-11-09 02:42:38,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:38,896 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 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, 1, 1, 1] [2024-11-09 02:42:38,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 02:42:38,896 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:38,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:38,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1624082221, now seen corresponding path program 1 times [2024-11-09 02:42:38,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:38,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421651979] [2024-11-09 02:42:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:38,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-09 02:42:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421651979] [2024-11-09 02:42:39,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421651979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:39,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:39,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148301777] [2024-11-09 02:42:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:39,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:39,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:39,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:39,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 173 transitions, 1322 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) [2024-11-09 02:42:39,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:39,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:39,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:40,613 INFO L124 PetriNetUnfolderBase]: 3204/5377 cut-off events. [2024-11-09 02:42:40,613 INFO L125 PetriNetUnfolderBase]: For 5449/5449 co-relation queries the response was YES. [2024-11-09 02:42:40,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15318 conditions, 5377 events. 3204/5377 cut-off events. For 5449/5449 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31728 event pairs, 1984 based on Foata normal form. 205/4453 useless extension candidates. Maximal degree in co-relation 15284. Up to 3432 conditions per place. [2024-11-09 02:42:40,634 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 156 selfloop transitions, 2 changer transitions 24/183 dead transitions. [2024-11-09 02:42:40,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 183 transitions, 1442 flow [2024-11-09 02:42:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-09 02:42:40,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-11-09 02:42:40,636 INFO L175 Difference]: Start difference. First operand has 143 places, 173 transitions, 1322 flow. Second operand 3 states and 131 transitions. [2024-11-09 02:42:40,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 183 transitions, 1442 flow [2024-11-09 02:42:40,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 183 transitions, 1375 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:40,655 INFO L231 Difference]: Finished difference. Result has 135 places, 147 transitions, 940 flow [2024-11-09 02:42:40,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=940, PETRI_PLACES=135, PETRI_TRANSITIONS=147} [2024-11-09 02:42:40,656 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 65 predicate places. [2024-11-09 02:42:40,656 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 147 transitions, 940 flow [2024-11-09 02:42:40,656 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) [2024-11-09 02:42:40,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:40,656 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-09 02:42:40,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 02:42:40,657 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:40,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:40,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1279691771, now seen corresponding path program 1 times [2024-11-09 02:42:40,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:40,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100884449] [2024-11-09 02:42:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:40,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:40,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100884449] [2024-11-09 02:42:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100884449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:40,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:40,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:40,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785226678] [2024-11-09 02:42:40,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:40,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:40,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:40,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:40,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 147 transitions, 940 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:40,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:40,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:40,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:41,828 INFO L124 PetriNetUnfolderBase]: 2749/4633 cut-off events. [2024-11-09 02:42:41,829 INFO L125 PetriNetUnfolderBase]: For 2451/2451 co-relation queries the response was YES. [2024-11-09 02:42:41,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12198 conditions, 4633 events. 2749/4633 cut-off events. For 2451/2451 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 26188 event pairs, 2334 based on Foata normal form. 1/3869 useless extension candidates. Maximal degree in co-relation 12168. Up to 4453 conditions per place. [2024-11-09 02:42:41,846 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 149 selfloop transitions, 1 changer transitions 19/170 dead transitions. [2024-11-09 02:42:41,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 170 transitions, 1329 flow [2024-11-09 02:42:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-09 02:42:41,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29521276595744683 [2024-11-09 02:42:41,847 INFO L175 Difference]: Start difference. First operand has 135 places, 147 transitions, 940 flow. Second operand 4 states and 111 transitions. [2024-11-09 02:42:41,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 170 transitions, 1329 flow [2024-11-09 02:42:41,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 170 transitions, 1327 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:41,854 INFO L231 Difference]: Finished difference. Result has 134 places, 145 transitions, 920 flow [2024-11-09 02:42:41,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=920, PETRI_PLACES=134, PETRI_TRANSITIONS=145} [2024-11-09 02:42:41,855 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 64 predicate places. [2024-11-09 02:42:41,855 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 145 transitions, 920 flow [2024-11-09 02:42:41,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:41,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:41,855 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-09 02:42:41,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 02:42:41,856 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:41,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:41,856 INFO L85 PathProgramCache]: Analyzing trace with hash -253074113, now seen corresponding path program 2 times [2024-11-09 02:42:41,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:41,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539456337] [2024-11-09 02:42:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:41,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539456337] [2024-11-09 02:42:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539456337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:42,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:42,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128435089] [2024-11-09 02:42:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:42,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:42,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:42,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 145 transitions, 920 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:42,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:42,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:42,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:42,884 INFO L124 PetriNetUnfolderBase]: 2663/4475 cut-off events. [2024-11-09 02:42:42,884 INFO L125 PetriNetUnfolderBase]: For 2235/2235 co-relation queries the response was YES. [2024-11-09 02:42:42,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11701 conditions, 4475 events. 2663/4475 cut-off events. For 2235/2235 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 24982 event pairs, 2272 based on Foata normal form. 1/3726 useless extension candidates. Maximal degree in co-relation 11670. Up to 4347 conditions per place. [2024-11-09 02:42:42,902 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 139 selfloop transitions, 0 changer transitions 22/162 dead transitions. [2024-11-09 02:42:42,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 162 transitions, 1278 flow [2024-11-09 02:42:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-09 02:42:42,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2765957446808511 [2024-11-09 02:42:42,903 INFO L175 Difference]: Start difference. First operand has 134 places, 145 transitions, 920 flow. Second operand 4 states and 104 transitions. [2024-11-09 02:42:42,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 162 transitions, 1278 flow [2024-11-09 02:42:42,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 162 transitions, 1275 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:42,912 INFO L231 Difference]: Finished difference. Result has 135 places, 140 transitions, 890 flow [2024-11-09 02:42:42,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=890, PETRI_PLACES=135, PETRI_TRANSITIONS=140} [2024-11-09 02:42:42,913 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 65 predicate places. [2024-11-09 02:42:42,913 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 140 transitions, 890 flow [2024-11-09 02:42:42,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:42,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:42,913 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-09 02:42:42,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 02:42:42,913 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:42,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 954372552, now seen corresponding path program 1 times [2024-11-09 02:42:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436170582] [2024-11-09 02:42:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:42,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:43,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436170582] [2024-11-09 02:42:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436170582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:43,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:43,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:43,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509499538] [2024-11-09 02:42:43,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:43,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:43,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:43,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 140 transitions, 890 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:43,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:43,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:43,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:43,836 INFO L124 PetriNetUnfolderBase]: 2287/3854 cut-off events. [2024-11-09 02:42:43,836 INFO L125 PetriNetUnfolderBase]: For 1952/1952 co-relation queries the response was YES. [2024-11-09 02:42:43,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 3854 events. 2287/3854 cut-off events. For 1952/1952 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20675 event pairs, 1901 based on Foata normal form. 1/3290 useless extension candidates. Maximal degree in co-relation 10048. Up to 3687 conditions per place. [2024-11-09 02:42:43,852 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 142 selfloop transitions, 1 changer transitions 18/162 dead transitions. [2024-11-09 02:42:43,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 162 transitions, 1263 flow [2024-11-09 02:42:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-09 02:42:43,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27925531914893614 [2024-11-09 02:42:43,853 INFO L175 Difference]: Start difference. First operand has 135 places, 140 transitions, 890 flow. Second operand 4 states and 105 transitions. [2024-11-09 02:42:43,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 162 transitions, 1263 flow [2024-11-09 02:42:43,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 162 transitions, 1255 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:43,860 INFO L231 Difference]: Finished difference. Result has 130 places, 138 transitions, 867 flow [2024-11-09 02:42:43,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=867, PETRI_PLACES=130, PETRI_TRANSITIONS=138} [2024-11-09 02:42:43,861 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 60 predicate places. [2024-11-09 02:42:43,861 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 138 transitions, 867 flow [2024-11-09 02:42:43,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:43,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:43,861 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-09 02:42:43,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 02:42:43,861 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:43,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1710011116, now seen corresponding path program 2 times [2024-11-09 02:42:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:43,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532797848] [2024-11-09 02:42:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:44,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532797848] [2024-11-09 02:42:44,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532797848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:44,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:44,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576109066] [2024-11-09 02:42:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:44,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:44,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:44,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:44,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 138 transitions, 867 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:44,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:44,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:44,838 INFO L124 PetriNetUnfolderBase]: 2208/3708 cut-off events. [2024-11-09 02:42:44,838 INFO L125 PetriNetUnfolderBase]: For 1511/1511 co-relation queries the response was YES. [2024-11-09 02:42:44,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 3708 events. 2208/3708 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19568 event pairs, 1851 based on Foata normal form. 1/3154 useless extension candidates. Maximal degree in co-relation 9550. Up to 3601 conditions per place. [2024-11-09 02:42:44,853 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 128 selfloop transitions, 0 changer transitions 24/153 dead transitions. [2024-11-09 02:42:44,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 1203 flow [2024-11-09 02:42:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-09 02:42:44,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2579787234042553 [2024-11-09 02:42:44,854 INFO L175 Difference]: Start difference. First operand has 130 places, 138 transitions, 867 flow. Second operand 4 states and 97 transitions. [2024-11-09 02:42:44,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 1203 flow [2024-11-09 02:42:44,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 153 transitions, 1198 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:44,864 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 828 flow [2024-11-09 02:42:44,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=828, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-11-09 02:42:44,865 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 61 predicate places. [2024-11-09 02:42:44,865 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 828 flow [2024-11-09 02:42:44,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:44,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:44,865 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:44,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 02:42:44,866 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:44,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:44,866 INFO L85 PathProgramCache]: Analyzing trace with hash 698782065, now seen corresponding path program 1 times [2024-11-09 02:42:44,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:44,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206264654] [2024-11-09 02:42:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:44,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-09 02:42:45,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:45,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206264654] [2024-11-09 02:42:45,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206264654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:45,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:45,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:45,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962040963] [2024-11-09 02:42:45,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:45,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:45,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:45,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:45,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:45,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 94 [2024-11-09 02:42:45,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 828 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:45,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:45,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 94 [2024-11-09 02:42:45,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:45,594 INFO L124 PetriNetUnfolderBase]: 1491/2542 cut-off events. [2024-11-09 02:42:45,595 INFO L125 PetriNetUnfolderBase]: For 1085/1085 co-relation queries the response was YES. [2024-11-09 02:42:45,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6623 conditions, 2542 events. 1491/2542 cut-off events. For 1085/1085 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12107 event pairs, 1072 based on Foata normal form. 34/2221 useless extension candidates. Maximal degree in co-relation 6592. Up to 2096 conditions per place. [2024-11-09 02:42:45,606 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 143 selfloop transitions, 3 changer transitions 2/149 dead transitions. [2024-11-09 02:42:45,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 149 transitions, 1167 flow [2024-11-09 02:42:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-09 02:42:45,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32978723404255317 [2024-11-09 02:42:45,607 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 828 flow. Second operand 3 states and 93 transitions. [2024-11-09 02:42:45,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 149 transitions, 1167 flow [2024-11-09 02:42:45,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 1155 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:45,613 INFO L231 Difference]: Finished difference. Result has 118 places, 127 transitions, 812 flow [2024-11-09 02:42:45,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=812, PETRI_PLACES=118, PETRI_TRANSITIONS=127} [2024-11-09 02:42:45,613 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 48 predicate places. [2024-11-09 02:42:45,613 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 127 transitions, 812 flow [2024-11-09 02:42:45,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:45,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:45,614 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1] [2024-11-09 02:42:45,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 02:42:45,614 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:45,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1582672416, now seen corresponding path program 1 times [2024-11-09 02:42:45,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:45,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431868082] [2024-11-09 02:42:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:45,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat