./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.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-word-subst.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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:42:17,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:42:17,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:42:17,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:42:17,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:42:17,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:42:17,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:42:17,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:42:17,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:42:17,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:42:17,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:42:17,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:42:17,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:42:17,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:42:17,928 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:42:17,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:42:17,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:42:17,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:42:17,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:42:17,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:42:17,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:42:17,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:42:17,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:42:17,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:42:17,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:42:17,932 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:42:17,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:42:17,932 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:42:17,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:42:17,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:42:17,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:42:17,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:42:17,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:42:17,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:42:17,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:42:17,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:42:17,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:42:17,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:42:17,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:42:17,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:42:17,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:42:17,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:42:17,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-09 02:42:18,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:42:18,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:42:18,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:42:18,189 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:42:18,190 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:42:18,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-09 02:42:19,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:42:19,570 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:42:19,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-09 02:42:19,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0572866c9/cdc4c770d1814ced9dc07d7a693c1933/FLAGf89047373 [2024-11-09 02:42:19,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0572866c9/cdc4c770d1814ced9dc07d7a693c1933 [2024-11-09 02:42:19,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:42:19,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:42:19,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:42:19,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:42:19,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:42:19,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:42:19" (1/1) ... [2024-11-09 02:42:19,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d78e8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:19, skipping insertion in model container [2024-11-09 02:42:19,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:42:19" (1/1) ... [2024-11-09 02:42:19,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:42:20,163 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3384,3397] [2024-11-09 02:42:20,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:42:20,176 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:42:20,194 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3384,3397] [2024-11-09 02:42:20,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:42:20,210 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:42:20,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20 WrapperNode [2024-11-09 02:42:20,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:42:20,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:42:20,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:42:20,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:42:20,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,242 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 169 [2024-11-09 02:42:20,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:42:20,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:42:20,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:42:20,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:42:20,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,263 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,280 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 02:42:20,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:42:20,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:42:20,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:42:20,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:42:20,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (1/1) ... [2024-11-09 02:42:20,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:42:20,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:20,330 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 02:42:20,332 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 02:42:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:42:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:42:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:42:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:42:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:42:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:42:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:42:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:42:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:42:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:42:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:42:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:42:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:42:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:42:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:42:20,398 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 02:42:20,495 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:42:20,497 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:42:20,813 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:42:20,813 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:42:21,033 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:42:21,033 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:42:21,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:42:21 BoogieIcfgContainer [2024-11-09 02:42:21,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:42:21,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:42:21,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:42:21,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:42:21,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:42:19" (1/3) ... [2024-11-09 02:42:21,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab4041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:42:21, skipping insertion in model container [2024-11-09 02:42:21,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:20" (2/3) ... [2024-11-09 02:42:21,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab4041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:42:21, skipping insertion in model container [2024-11-09 02:42:21,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:42:21" (3/3) ... [2024-11-09 02:42:21,043 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-09 02:42:21,057 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:42:21,058 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:42:21,058 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:42:21,106 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:42:21,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-09 02:42:21,195 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-09 02:42:21,195 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:42:21,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-09 02:42:21,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-09 02:42:21,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-09 02:42:21,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:42:21,213 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;@291320c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:42:21,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:42:21,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:42:21,226 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-09 02:42:21,226 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:42:21,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:21,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:21,228 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:21,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:21,232 INFO L85 PathProgramCache]: Analyzing trace with hash -220026163, now seen corresponding path program 1 times [2024-11-09 02:42:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177808469] [2024-11-09 02:42:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:21,626 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 02:42:21,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:21,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177808469] [2024-11-09 02:42:21,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177808469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:21,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:21,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345336044] [2024-11-09 02:42:21,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:21,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:21,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:21,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:21,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:21,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:21,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 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 02:42:21,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:21,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:21,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:22,186 INFO L124 PetriNetUnfolderBase]: 3738/4998 cut-off events. [2024-11-09 02:42:22,186 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-09 02:42:22,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 4998 events. 3738/4998 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20524 event pairs, 1692 based on Foata normal form. 1/3664 useless extension candidates. Maximal degree in co-relation 9368. Up to 3459 conditions per place. [2024-11-09 02:42:22,212 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 2 changer transitions 5/73 dead transitions. [2024-11-09 02:42:22,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 323 flow [2024-11-09 02:42:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-09 02:42:22,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-11-09 02:42:22,225 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-09 02:42:22,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 323 flow [2024-11-09 02:42:22,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 301 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:42:22,241 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 106 flow [2024-11-09 02:42:22,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-11-09 02:42:22,247 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-09 02:42:22,247 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 106 flow [2024-11-09 02:42:22,248 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 02:42:22,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:22,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:22,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:42:22,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:22,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1290270659, now seen corresponding path program 1 times [2024-11-09 02:42:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742033191] [2024-11-09 02:42:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:23,055 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 02:42:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:23,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742033191] [2024-11-09 02:42:23,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742033191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:23,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:42:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502991370] [2024-11-09 02:42:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:23,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:42:23,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:42:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:42:23,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:23,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:23,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:23,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:23,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:23,573 INFO L124 PetriNetUnfolderBase]: 3507/4756 cut-off events. [2024-11-09 02:42:23,573 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-11-09 02:42:23,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 4756 events. 3507/4756 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20957 event pairs, 377 based on Foata normal form. 1/3751 useless extension candidates. Maximal degree in co-relation 8283. Up to 3012 conditions per place. [2024-11-09 02:42:23,598 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 87 selfloop transitions, 9 changer transitions 14/111 dead transitions. [2024-11-09 02:42:23,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 111 transitions, 485 flow [2024-11-09 02:42:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:42:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:42:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-09 02:42:23,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-09 02:42:23,605 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 106 flow. Second operand 6 states and 132 transitions. [2024-11-09 02:42:23,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 111 transitions, 485 flow [2024-11-09 02:42:23,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:23,621 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 170 flow [2024-11-09 02:42:23,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2024-11-09 02:42:23,623 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-11-09 02:42:23,623 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 170 flow [2024-11-09 02:42:23,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:23,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:23,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:23,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:42:23,624 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:23,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash 510529653, now seen corresponding path program 2 times [2024-11-09 02:42:23,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:23,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019238117] [2024-11-09 02:42:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:23,971 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 02:42:23,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:23,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019238117] [2024-11-09 02:42:23,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019238117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:23,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:23,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:23,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98139180] [2024-11-09 02:42:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:23,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:23,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:23,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:23,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:23,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:23,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:23,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:24,472 INFO L124 PetriNetUnfolderBase]: 4215/5817 cut-off events. [2024-11-09 02:42:24,473 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2024-11-09 02:42:24,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13038 conditions, 5817 events. 4215/5817 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 25580 event pairs, 2040 based on Foata normal form. 1/4988 useless extension candidates. Maximal degree in co-relation 13014. Up to 3779 conditions per place. [2024-11-09 02:42:24,491 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 88 selfloop transitions, 3 changer transitions 15/107 dead transitions. [2024-11-09 02:42:24,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 107 transitions, 534 flow [2024-11-09 02:42:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:24,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-09 02:42:24,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-11-09 02:42:24,493 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 170 flow. Second operand 5 states and 116 transitions. [2024-11-09 02:42:24,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 107 transitions, 534 flow [2024-11-09 02:42:24,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 107 transitions, 528 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:24,500 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 188 flow [2024-11-09 02:42:24,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-09 02:42:24,501 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-09 02:42:24,501 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 188 flow [2024-11-09 02:42:24,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:24,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:24,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:24,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:42:24,502 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:24,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -574546763, now seen corresponding path program 3 times [2024-11-09 02:42:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832944521] [2024-11-09 02:42:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:24,791 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 02:42:24,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:24,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832944521] [2024-11-09 02:42:24,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832944521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:24,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:24,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:24,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459241476] [2024-11-09 02:42:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:24,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:24,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:24,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:24,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:24,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:24,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:24,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:25,274 INFO L124 PetriNetUnfolderBase]: 4645/6434 cut-off events. [2024-11-09 02:42:25,275 INFO L125 PetriNetUnfolderBase]: For 2951/2951 co-relation queries the response was YES. [2024-11-09 02:42:25,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 6434 events. 4645/6434 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30979 event pairs, 683 based on Foata normal form. 1/5525 useless extension candidates. Maximal degree in co-relation 14861. Up to 4403 conditions per place. [2024-11-09 02:42:25,304 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 92 selfloop transitions, 3 changer transitions 15/111 dead transitions. [2024-11-09 02:42:25,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 111 transitions, 563 flow [2024-11-09 02:42:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-09 02:42:25,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-09 02:42:25,306 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 188 flow. Second operand 5 states and 120 transitions. [2024-11-09 02:42:25,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 111 transitions, 563 flow [2024-11-09 02:42:25,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 111 transitions, 552 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:25,323 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 203 flow [2024-11-09 02:42:25,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-09 02:42:25,324 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-11-09 02:42:25,325 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 203 flow [2024-11-09 02:42:25,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:25,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:25,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:25,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:42:25,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:25,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash -330068201, now seen corresponding path program 4 times [2024-11-09 02:42:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:25,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004070815] [2024-11-09 02:42:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:25,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:25,854 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 02:42:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004070815] [2024-11-09 02:42:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004070815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:25,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:42:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754074020] [2024-11-09 02:42:25,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:25,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:42:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:42:25,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:42:25,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:25,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:25,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:25,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:25,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:26,460 INFO L124 PetriNetUnfolderBase]: 5270/7359 cut-off events. [2024-11-09 02:42:26,460 INFO L125 PetriNetUnfolderBase]: For 5567/5567 co-relation queries the response was YES. [2024-11-09 02:42:26,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17409 conditions, 7359 events. 5270/7359 cut-off events. For 5567/5567 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34046 event pairs, 2962 based on Foata normal form. 1/6346 useless extension candidates. Maximal degree in co-relation 17368. Up to 5333 conditions per place. [2024-11-09 02:42:26,488 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 80 selfloop transitions, 11 changer transitions 16/108 dead transitions. [2024-11-09 02:42:26,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 108 transitions, 586 flow [2024-11-09 02:42:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:42:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:42:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-11-09 02:42:26,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-11-09 02:42:26,490 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 203 flow. Second operand 6 states and 124 transitions. [2024-11-09 02:42:26,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 108 transitions, 586 flow [2024-11-09 02:42:26,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 570 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:26,504 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 242 flow [2024-11-09 02:42:26,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-09 02:42:26,505 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-11-09 02:42:26,505 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 242 flow [2024-11-09 02:42:26,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:26,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:26,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:42:26,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:26,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:26,506 INFO L85 PathProgramCache]: Analyzing trace with hash -458472143, now seen corresponding path program 5 times [2024-11-09 02:42:26,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436114624] [2024-11-09 02:42:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:26,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:26,763 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 02:42:26,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:26,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436114624] [2024-11-09 02:42:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436114624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:26,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:26,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413268229] [2024-11-09 02:42:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:26,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:26,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:26,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:26,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:26,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:27,328 INFO L124 PetriNetUnfolderBase]: 5153/7169 cut-off events. [2024-11-09 02:42:27,329 INFO L125 PetriNetUnfolderBase]: For 6533/6533 co-relation queries the response was YES. [2024-11-09 02:42:27,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17299 conditions, 7169 events. 5153/7169 cut-off events. For 6533/6533 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33292 event pairs, 2769 based on Foata normal form. 1/6164 useless extension candidates. Maximal degree in co-relation 17261. Up to 5151 conditions per place. [2024-11-09 02:42:27,353 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 4 changer transitions 14/116 dead transitions. [2024-11-09 02:42:27,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 635 flow [2024-11-09 02:42:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-09 02:42:27,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-11-09 02:42:27,355 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 242 flow. Second operand 5 states and 123 transitions. [2024-11-09 02:42:27,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 635 flow [2024-11-09 02:42:27,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 615 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:27,372 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2024-11-09 02:42:27,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-09 02:42:27,373 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-09 02:42:27,373 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2024-11-09 02:42:27,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:27,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:27,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:42:27,374 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:27,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:27,375 INFO L85 PathProgramCache]: Analyzing trace with hash 871185299, now seen corresponding path program 6 times [2024-11-09 02:42:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050675729] [2024-11-09 02:42:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:27,635 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 02:42:27,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:27,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050675729] [2024-11-09 02:42:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050675729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:27,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:27,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268434840] [2024-11-09 02:42:27,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:27,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:27,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:27,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:27,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:27,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,250 INFO L124 PetriNetUnfolderBase]: 5041/7000 cut-off events. [2024-11-09 02:42:28,250 INFO L125 PetriNetUnfolderBase]: For 7038/7038 co-relation queries the response was YES. [2024-11-09 02:42:28,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16863 conditions, 7000 events. 5041/7000 cut-off events. For 7038/7038 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31621 event pairs, 2870 based on Foata normal form. 1/6003 useless extension candidates. Maximal degree in co-relation 16828. Up to 5338 conditions per place. [2024-11-09 02:42:28,277 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 3 changer transitions 14/112 dead transitions. [2024-11-09 02:42:28,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 112 transitions, 613 flow [2024-11-09 02:42:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-09 02:42:28,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-09 02:42:28,279 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 238 flow. Second operand 5 states and 119 transitions. [2024-11-09 02:42:28,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 112 transitions, 613 flow [2024-11-09 02:42:28,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 602 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:28,297 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 240 flow [2024-11-09 02:42:28,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-09 02:42:28,297 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-11-09 02:42:28,298 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 240 flow [2024-11-09 02:42:28,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:28,298 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] [2024-11-09 02:42:28,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:42:28,298 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:28,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2016084104, now seen corresponding path program 1 times [2024-11-09 02:42:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653228856] [2024-11-09 02:42:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,362 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 02:42:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653228856] [2024-11-09 02:42:28,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653228856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:28,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:28,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387741166] [2024-11-09 02:42:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:28,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:28,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:28,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,801 INFO L124 PetriNetUnfolderBase]: 6044/8410 cut-off events. [2024-11-09 02:42:28,801 INFO L125 PetriNetUnfolderBase]: For 9162/9162 co-relation queries the response was YES. [2024-11-09 02:42:28,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 8410 events. 6044/8410 cut-off events. For 9162/9162 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40729 event pairs, 477 based on Foata normal form. 66/7236 useless extension candidates. Maximal degree in co-relation 19964. Up to 5299 conditions per place. [2024-11-09 02:42:28,832 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-11-09 02:42:28,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 101 transitions, 582 flow [2024-11-09 02:42:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-09 02:42:28,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-09 02:42:28,835 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 240 flow. Second operand 4 states and 105 transitions. [2024-11-09 02:42:28,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 101 transitions, 582 flow [2024-11-09 02:42:28,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 573 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:28,852 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 296 flow [2024-11-09 02:42:28,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-11-09 02:42:28,853 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-11-09 02:42:28,853 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 296 flow [2024-11-09 02:42:28,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:28,853 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] [2024-11-09 02:42:28,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:42:28,853 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:28,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash 895690072, now seen corresponding path program 2 times [2024-11-09 02:42:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765348493] [2024-11-09 02:42:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,907 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 02:42:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765348493] [2024-11-09 02:42:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765348493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:28,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428060778] [2024-11-09 02:42:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:28,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:28,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:28,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:29,318 INFO L124 PetriNetUnfolderBase]: 5676/7907 cut-off events. [2024-11-09 02:42:29,319 INFO L125 PetriNetUnfolderBase]: For 8509/8509 co-relation queries the response was YES. [2024-11-09 02:42:29,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19576 conditions, 7907 events. 5676/7907 cut-off events. For 8509/8509 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37476 event pairs, 637 based on Foata normal form. 66/6805 useless extension candidates. Maximal degree in co-relation 19511. Up to 4823 conditions per place. [2024-11-09 02:42:29,351 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 99 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-11-09 02:42:29,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 688 flow [2024-11-09 02:42:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-09 02:42:29,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-09 02:42:29,353 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 296 flow. Second operand 4 states and 105 transitions. [2024-11-09 02:42:29,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 688 flow [2024-11-09 02:42:29,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:42:29,370 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 385 flow [2024-11-09 02:42:29,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-11-09 02:42:29,372 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-11-09 02:42:29,373 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 385 flow [2024-11-09 02:42:29,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:29,373 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] [2024-11-09 02:42:29,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:42:29,373 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:29,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1223396110, now seen corresponding path program 3 times [2024-11-09 02:42:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:29,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585901879] [2024-11-09 02:42:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:29,438 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 02:42:29,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585901879] [2024-11-09 02:42:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585901879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:29,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026397540] [2024-11-09 02:42:29,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:29,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:29,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:29,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:29,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:29,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:29,898 INFO L124 PetriNetUnfolderBase]: 5348/7444 cut-off events. [2024-11-09 02:42:29,898 INFO L125 PetriNetUnfolderBase]: For 10280/10280 co-relation queries the response was YES. [2024-11-09 02:42:29,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19373 conditions, 7444 events. 5348/7444 cut-off events. For 10280/10280 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35152 event pairs, 1270 based on Foata normal form. 26/6374 useless extension candidates. Maximal degree in co-relation 19305. Up to 5180 conditions per place. [2024-11-09 02:42:29,925 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 99 selfloop transitions, 11 changer transitions 2/113 dead transitions. [2024-11-09 02:42:29,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 742 flow [2024-11-09 02:42:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-09 02:42:29,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-11-09 02:42:29,927 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 385 flow. Second operand 5 states and 117 transitions. [2024-11-09 02:42:29,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 742 flow [2024-11-09 02:42:29,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 740 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:42:29,947 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 415 flow [2024-11-09 02:42:29,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-09 02:42:29,947 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-11-09 02:42:29,948 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 415 flow [2024-11-09 02:42:29,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:29,948 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] [2024-11-09 02:42:29,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:42:29,948 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:29,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1591909984, now seen corresponding path program 1 times [2024-11-09 02:42:29,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:29,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281639069] [2024-11-09 02:42:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:29,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:29,997 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 02:42:29,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281639069] [2024-11-09 02:42:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281639069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655241262] [2024-11-09 02:42:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:29,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:29,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:29,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:29,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:29,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:30,575 INFO L124 PetriNetUnfolderBase]: 6218/8668 cut-off events. [2024-11-09 02:42:30,575 INFO L125 PetriNetUnfolderBase]: For 13282/13282 co-relation queries the response was YES. [2024-11-09 02:42:30,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22214 conditions, 8668 events. 6218/8668 cut-off events. For 13282/13282 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 42392 event pairs, 982 based on Foata normal form. 65/7425 useless extension candidates. Maximal degree in co-relation 22144. Up to 5977 conditions per place. [2024-11-09 02:42:30,612 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-11-09 02:42:30,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 754 flow [2024-11-09 02:42:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-09 02:42:30,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-09 02:42:30,614 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 415 flow. Second operand 4 states and 104 transitions. [2024-11-09 02:42:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 754 flow [2024-11-09 02:42:30,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 719 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:30,653 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 444 flow [2024-11-09 02:42:30,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=444, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-09 02:42:30,654 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-11-09 02:42:30,656 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 444 flow [2024-11-09 02:42:30,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:30,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:30,657 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] [2024-11-09 02:42:30,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:42:30,657 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:30,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1076861620, now seen corresponding path program 2 times [2024-11-09 02:42:30,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:30,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386921260] [2024-11-09 02:42:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:30,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:30,729 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 02:42:30,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:30,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386921260] [2024-11-09 02:42:30,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386921260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:30,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:30,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733126342] [2024-11-09 02:42:30,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:30,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:30,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:30,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:30,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:30,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:30,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:30,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:30,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:30,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:31,259 INFO L124 PetriNetUnfolderBase]: 5884/8196 cut-off events. [2024-11-09 02:42:31,260 INFO L125 PetriNetUnfolderBase]: For 10758/10758 co-relation queries the response was YES. [2024-11-09 02:42:31,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21569 conditions, 8196 events. 5884/8196 cut-off events. For 10758/10758 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 39474 event pairs, 1560 based on Foata normal form. 27/6989 useless extension candidates. Maximal degree in co-relation 21501. Up to 5822 conditions per place. [2024-11-09 02:42:31,281 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 105 selfloop transitions, 11 changer transitions 3/120 dead transitions. [2024-11-09 02:42:31,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 825 flow [2024-11-09 02:42:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-09 02:42:31,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-09 02:42:31,285 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 444 flow. Second operand 5 states and 120 transitions. [2024-11-09 02:42:31,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 825 flow [2024-11-09 02:42:31,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 807 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:31,306 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 478 flow [2024-11-09 02:42:31,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-11-09 02:42:31,307 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-11-09 02:42:31,307 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 478 flow [2024-11-09 02:42:31,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:31,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:31,307 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] [2024-11-09 02:42:31,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:42:31,307 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:31,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash 542634404, now seen corresponding path program 3 times [2024-11-09 02:42:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:31,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610379427] [2024-11-09 02:42:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:31,351 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 02:42:31,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610379427] [2024-11-09 02:42:31,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610379427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:31,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:31,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949293790] [2024-11-09 02:42:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:31,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:31,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:31,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:31,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:31,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:31,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:31,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:31,757 INFO L124 PetriNetUnfolderBase]: 5222/7261 cut-off events. [2024-11-09 02:42:31,758 INFO L125 PetriNetUnfolderBase]: For 12533/12533 co-relation queries the response was YES. [2024-11-09 02:42:31,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19390 conditions, 7261 events. 5222/7261 cut-off events. For 12533/12533 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33784 event pairs, 2384 based on Foata normal form. 53/6226 useless extension candidates. Maximal degree in co-relation 19321. Up to 4857 conditions per place. [2024-11-09 02:42:31,788 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 118 selfloop transitions, 7 changer transitions 6/132 dead transitions. [2024-11-09 02:42:31,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 882 flow [2024-11-09 02:42:31,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-09 02:42:31,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-09 02:42:31,790 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 478 flow. Second operand 5 states and 128 transitions. [2024-11-09 02:42:31,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 882 flow [2024-11-09 02:42:31,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 868 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:31,814 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 443 flow [2024-11-09 02:42:31,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-11-09 02:42:31,815 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-11-09 02:42:31,815 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 443 flow [2024-11-09 02:42:31,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:31,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:31,815 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] [2024-11-09 02:42:31,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:42:31,816 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:31,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1097262630, now seen corresponding path program 4 times [2024-11-09 02:42:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469983577] [2024-11-09 02:42:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:31,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:31,908 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 02:42:31,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:31,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469983577] [2024-11-09 02:42:31,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469983577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:31,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:31,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:31,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280749116] [2024-11-09 02:42:31,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:31,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:31,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:31,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:31,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:31,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:31,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:31,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:31,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:31,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:32,300 INFO L124 PetriNetUnfolderBase]: 4621/6392 cut-off events. [2024-11-09 02:42:32,301 INFO L125 PetriNetUnfolderBase]: For 11663/11663 co-relation queries the response was YES. [2024-11-09 02:42:32,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 6392 events. 4621/6392 cut-off events. For 11663/11663 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28377 event pairs, 1094 based on Foata normal form. 65/5463 useless extension candidates. Maximal degree in co-relation 16854. Up to 5031 conditions per place. [2024-11-09 02:42:32,322 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 91 selfloop transitions, 10 changer transitions 2/104 dead transitions. [2024-11-09 02:42:32,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 735 flow [2024-11-09 02:42:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-09 02:42:32,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-09 02:42:32,324 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 443 flow. Second operand 4 states and 100 transitions. [2024-11-09 02:42:32,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 735 flow [2024-11-09 02:42:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 709 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:32,342 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 421 flow [2024-11-09 02:42:32,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-11-09 02:42:32,343 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-09 02:42:32,343 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 421 flow [2024-11-09 02:42:32,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:32,344 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] [2024-11-09 02:42:32,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:42:32,344 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:32,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1650530228, now seen corresponding path program 5 times [2024-11-09 02:42:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894832207] [2024-11-09 02:42:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:32,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:32,404 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 02:42:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894832207] [2024-11-09 02:42:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894832207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:32,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:32,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508781557] [2024-11-09 02:42:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:32,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:32,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 421 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:32,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:32,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:32,749 INFO L124 PetriNetUnfolderBase]: 4526/6259 cut-off events. [2024-11-09 02:42:32,749 INFO L125 PetriNetUnfolderBase]: For 8040/8040 co-relation queries the response was YES. [2024-11-09 02:42:32,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16345 conditions, 6259 events. 4526/6259 cut-off events. For 8040/8040 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 28018 event pairs, 2710 based on Foata normal form. 20/5281 useless extension candidates. Maximal degree in co-relation 16277. Up to 5489 conditions per place. [2024-11-09 02:42:32,776 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 84 selfloop transitions, 1 changer transitions 14/100 dead transitions. [2024-11-09 02:42:32,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 693 flow [2024-11-09 02:42:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-09 02:42:32,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-11-09 02:42:32,778 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 421 flow. Second operand 4 states and 93 transitions. [2024-11-09 02:42:32,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 693 flow [2024-11-09 02:42:32,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 665 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:32,795 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 379 flow [2024-11-09 02:42:32,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-11-09 02:42:32,795 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-09 02:42:32,795 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 379 flow [2024-11-09 02:42:32,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:32,796 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] [2024-11-09 02:42:32,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 02:42:32,796 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:32,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1814186152, now seen corresponding path program 4 times [2024-11-09 02:42:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:32,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594640111] [2024-11-09 02:42:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:32,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:32,846 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 02:42:32,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594640111] [2024-11-09 02:42:32,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594640111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:32,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:32,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:32,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626876517] [2024-11-09 02:42:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:32,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:32,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:32,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:32,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:32,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:32,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:33,184 INFO L124 PetriNetUnfolderBase]: 4155/5726 cut-off events. [2024-11-09 02:42:33,184 INFO L125 PetriNetUnfolderBase]: For 5951/5951 co-relation queries the response was YES. [2024-11-09 02:42:33,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14685 conditions, 5726 events. 4155/5726 cut-off events. For 5951/5951 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 24769 event pairs, 884 based on Foata normal form. 40/4842 useless extension candidates. Maximal degree in co-relation 14668. Up to 5120 conditions per place. [2024-11-09 02:42:33,203 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 5 changer transitions 16/94 dead transitions. [2024-11-09 02:42:33,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 611 flow [2024-11-09 02:42:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-09 02:42:33,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-11-09 02:42:33,204 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 379 flow. Second operand 4 states and 92 transitions. [2024-11-09 02:42:33,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 611 flow [2024-11-09 02:42:33,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:33,213 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 348 flow [2024-11-09 02:42:33,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-11-09 02:42:33,213 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-09 02:42:33,214 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 348 flow [2024-11-09 02:42:33,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:33,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:33,214 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] [2024-11-09 02:42:33,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 02:42:33,214 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:33,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash -70028716, now seen corresponding path program 5 times [2024-11-09 02:42:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154179825] [2024-11-09 02:42:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:33,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:33,258 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 02:42:33,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:33,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154179825] [2024-11-09 02:42:33,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154179825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:33,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:33,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196285154] [2024-11-09 02:42:33,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:33,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:33,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:33,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:33,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:33,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:33,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:33,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:33,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:33,518 INFO L124 PetriNetUnfolderBase]: 3657/5013 cut-off events. [2024-11-09 02:42:33,519 INFO L125 PetriNetUnfolderBase]: For 5007/5007 co-relation queries the response was YES. [2024-11-09 02:42:33,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 5013 events. 3657/5013 cut-off events. For 5007/5007 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20960 event pairs, 2319 based on Foata normal form. 20/4213 useless extension candidates. Maximal degree in co-relation 12895. Up to 4857 conditions per place. [2024-11-09 02:42:33,535 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 59 selfloop transitions, 0 changer transitions 15/75 dead transitions. [2024-11-09 02:42:33,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 501 flow [2024-11-09 02:42:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-09 02:42:33,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37244897959183676 [2024-11-09 02:42:33,536 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 348 flow. Second operand 4 states and 73 transitions. [2024-11-09 02:42:33,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 501 flow [2024-11-09 02:42:33,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 485 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:33,541 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 292 flow [2024-11-09 02:42:33,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-09 02:42:33,542 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-11-09 02:42:33,542 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 292 flow [2024-11-09 02:42:33,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:33,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:33,542 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] [2024-11-09 02:42:33,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 02:42:33,542 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:33,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:33,543 INFO L85 PathProgramCache]: Analyzing trace with hash 295309173, now seen corresponding path program 1 times [2024-11-09 02:42:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:33,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54693856] [2024-11-09 02:42:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:33,867 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 02:42:33,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:33,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54693856] [2024-11-09 02:42:33,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54693856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:33,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:33,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 02:42:33,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166422357] [2024-11-09 02:42:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:33,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:42:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:42:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:42:33,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:33,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 02:42:33,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:33,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:33,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:34,856 INFO L124 PetriNetUnfolderBase]: 8965/12323 cut-off events. [2024-11-09 02:42:34,856 INFO L125 PetriNetUnfolderBase]: For 6511/6511 co-relation queries the response was YES. [2024-11-09 02:42:34,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31358 conditions, 12323 events. 8965/12323 cut-off events. For 6511/6511 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 60988 event pairs, 1972 based on Foata normal form. 1/10449 useless extension candidates. Maximal degree in co-relation 31344. Up to 3976 conditions per place. [2024-11-09 02:42:34,904 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 176 selfloop transitions, 16 changer transitions 1/194 dead transitions. [2024-11-09 02:42:34,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 194 transitions, 1254 flow [2024-11-09 02:42:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:42:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:42:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-11-09 02:42:34,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42630385487528344 [2024-11-09 02:42:34,905 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 292 flow. Second operand 9 states and 188 transitions. [2024-11-09 02:42:34,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 194 transitions, 1254 flow [2024-11-09 02:42:34,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 194 transitions, 1236 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:34,921 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 394 flow [2024-11-09 02:42:34,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=394, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-09 02:42:34,921 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-11-09 02:42:34,921 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 394 flow [2024-11-09 02:42:34,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 02:42:34,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:34,921 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, 1, 1] [2024-11-09 02:42:34,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 02:42:34,922 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:34,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash 501131277, now seen corresponding path program 1 times [2024-11-09 02:42:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:34,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551881461] [2024-11-09 02:42:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:34,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:35,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551881461] [2024-11-09 02:42:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551881461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838728549] [2024-11-09 02:42:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:35,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:35,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:35,058 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 02:42:35,059 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 02:42:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:35,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:42:35,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:35,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:42:36,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838728549] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:36,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:42:36,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-11-09 02:42:36,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432796394] [2024-11-09 02:42:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:36,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:42:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:42:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:42:36,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:36,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 394 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:36,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:36,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:36,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:39,615 INFO L124 PetriNetUnfolderBase]: 19969/27861 cut-off events. [2024-11-09 02:42:39,615 INFO L125 PetriNetUnfolderBase]: For 17263/17263 co-relation queries the response was YES. [2024-11-09 02:42:39,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77119 conditions, 27861 events. 19969/27861 cut-off events. For 17263/17263 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 161084 event pairs, 2126 based on Foata normal form. 1/25308 useless extension candidates. Maximal degree in co-relation 77101. Up to 7406 conditions per place. [2024-11-09 02:42:39,718 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 334 selfloop transitions, 83 changer transitions 9/427 dead transitions. [2024-11-09 02:42:39,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 427 transitions, 2839 flow [2024-11-09 02:42:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:42:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:42:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 339 transitions. [2024-11-09 02:42:39,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49416909620991256 [2024-11-09 02:42:39,720 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 394 flow. Second operand 14 states and 339 transitions. [2024-11-09 02:42:39,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 427 transitions, 2839 flow [2024-11-09 02:42:39,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 427 transitions, 2829 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-09 02:42:39,806 INFO L231 Difference]: Finished difference. Result has 102 places, 165 transitions, 1183 flow [2024-11-09 02:42:39,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1183, PETRI_PLACES=102, PETRI_TRANSITIONS=165} [2024-11-09 02:42:39,807 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-11-09 02:42:39,807 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 165 transitions, 1183 flow [2024-11-09 02:42:39,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:39,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:39,807 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 02:42:39,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:42:40,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:40,012 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:40,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1818739996, now seen corresponding path program 1 times [2024-11-09 02:42:40,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:40,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239073485] [2024-11-09 02:42:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:40,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:40,079 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 02:42:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:40,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239073485] [2024-11-09 02:42:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239073485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:40,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:40,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801578808] [2024-11-09 02:42:40,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:40,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:40,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:40,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:40,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 165 transitions, 1183 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 02:42:40,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:40,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:40,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:42,769 INFO L124 PetriNetUnfolderBase]: 23229/32934 cut-off events. [2024-11-09 02:42:42,770 INFO L125 PetriNetUnfolderBase]: For 71407/71407 co-relation queries the response was YES. [2024-11-09 02:42:42,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117328 conditions, 32934 events. 23229/32934 cut-off events. For 71407/71407 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 200242 event pairs, 11344 based on Foata normal form. 0/30465 useless extension candidates. Maximal degree in co-relation 117299. Up to 13603 conditions per place. [2024-11-09 02:42:42,928 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 279 selfloop transitions, 26 changer transitions 6/312 dead transitions. [2024-11-09 02:42:42,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 312 transitions, 2792 flow [2024-11-09 02:42:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:42:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:42:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-09 02:42:42,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-11-09 02:42:42,929 INFO L175 Difference]: Start difference. First operand has 102 places, 165 transitions, 1183 flow. Second operand 6 states and 127 transitions. [2024-11-09 02:42:42,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 312 transitions, 2792 flow [2024-11-09 02:42:43,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 312 transitions, 2731 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:43,232 INFO L231 Difference]: Finished difference. Result has 106 places, 167 transitions, 1331 flow [2024-11-09 02:42:43,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1331, PETRI_PLACES=106, PETRI_TRANSITIONS=167} [2024-11-09 02:42:43,232 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-11-09 02:42:43,232 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 167 transitions, 1331 flow [2024-11-09 02:42:43,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 02:42:43,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:43,233 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 02:42:43,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 02:42:43,233 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:43,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1098878460, now seen corresponding path program 1 times [2024-11-09 02:42:43,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:43,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166889641] [2024-11-09 02:42:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:43,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:43,284 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 02:42:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166889641] [2024-11-09 02:42:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166889641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:43,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873473870] [2024-11-09 02:42:43,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:43,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:43,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:43,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 167 transitions, 1331 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 02:42:43,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:43,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:43,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:47,320 INFO L124 PetriNetUnfolderBase]: 33446/48223 cut-off events. [2024-11-09 02:42:47,320 INFO L125 PetriNetUnfolderBase]: For 133087/133087 co-relation queries the response was YES. [2024-11-09 02:42:47,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178336 conditions, 48223 events. 33446/48223 cut-off events. For 133087/133087 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 319928 event pairs, 18149 based on Foata normal form. 0/46157 useless extension candidates. Maximal degree in co-relation 178305. Up to 23711 conditions per place. [2024-11-09 02:42:47,818 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 288 selfloop transitions, 19 changer transitions 22/330 dead transitions. [2024-11-09 02:42:47,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 330 transitions, 3310 flow [2024-11-09 02:42:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:42:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:42:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-11-09 02:42:47,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-11-09 02:42:47,820 INFO L175 Difference]: Start difference. First operand has 106 places, 167 transitions, 1331 flow. Second operand 6 states and 122 transitions. [2024-11-09 02:42:47,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 330 transitions, 3310 flow [2024-11-09 02:42:48,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 330 transitions, 3297 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:48,342 INFO L231 Difference]: Finished difference. Result has 112 places, 155 transitions, 1307 flow [2024-11-09 02:42:48,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1307, PETRI_PLACES=112, PETRI_TRANSITIONS=155} [2024-11-09 02:42:48,343 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-11-09 02:42:48,343 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 155 transitions, 1307 flow [2024-11-09 02:42:48,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 02:42:48,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:48,343 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 02:42:48,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 02:42:48,343 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:48,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash 59614561, now seen corresponding path program 2 times [2024-11-09 02:42:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923418326] [2024-11-09 02:42:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923418326] [2024-11-09 02:42:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923418326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513393183] [2024-11-09 02:42:48,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:48,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:48,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:48,451 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 02:42:48,452 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 02:42:48,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:42:48,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:48,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:42:48,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:42:48,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:42:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513393183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:42:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-11-09 02:42:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872934672] [2024-11-09 02:42:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:48,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:42:48,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:48,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 1307 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 02:42:48,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:48,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:48,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:53,100 INFO L124 PetriNetUnfolderBase]: 34630/49307 cut-off events. [2024-11-09 02:42:53,100 INFO L125 PetriNetUnfolderBase]: For 156184/156184 co-relation queries the response was YES. [2024-11-09 02:42:53,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190337 conditions, 49307 events. 34630/49307 cut-off events. For 156184/156184 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 322934 event pairs, 5023 based on Foata normal form. 1/47985 useless extension candidates. Maximal degree in co-relation 190303. Up to 24755 conditions per place. [2024-11-09 02:42:53,415 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 323 selfloop transitions, 121 changer transitions 5/450 dead transitions. [2024-11-09 02:42:53,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 450 transitions, 4340 flow [2024-11-09 02:42:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:42:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:42:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 281 transitions. [2024-11-09 02:42:53,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4096209912536443 [2024-11-09 02:42:53,417 INFO L175 Difference]: Start difference. First operand has 112 places, 155 transitions, 1307 flow. Second operand 14 states and 281 transitions. [2024-11-09 02:42:53,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 450 transitions, 4340 flow [2024-11-09 02:42:55,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 450 transitions, 4210 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:55,284 INFO L231 Difference]: Finished difference. Result has 127 places, 226 transitions, 2256 flow [2024-11-09 02:42:55,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2256, PETRI_PLACES=127, PETRI_TRANSITIONS=226} [2024-11-09 02:42:55,285 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-11-09 02:42:55,285 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 226 transitions, 2256 flow [2024-11-09 02:42:55,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 02:42:55,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:55,285 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 02:42:55,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:42:55,485 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,SelfDestructingSolverStorable21 [2024-11-09 02:42:55,486 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:55,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash -500687249, now seen corresponding path program 3 times [2024-11-09 02:42:55,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:55,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069950203] [2024-11-09 02:42:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:55,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:55,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:55,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069950203] [2024-11-09 02:42:55,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069950203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:55,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710687115] [2024-11-09 02:42:55,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:55,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:55,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:55,636 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 02:42:55,637 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 02:42:55,705 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:42:55,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:55,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:42:55,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:42:56,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:42:56,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710687115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:56,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:42:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-11-09 02:42:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247760206] [2024-11-09 02:42:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:56,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:56,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:42:56,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:56,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 226 transitions, 2256 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 02:42:56,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:56,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:56,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:01,190 INFO L124 PetriNetUnfolderBase]: 35856/51014 cut-off events. [2024-11-09 02:43:01,190 INFO L125 PetriNetUnfolderBase]: For 183961/183961 co-relation queries the response was YES. [2024-11-09 02:43:01,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210368 conditions, 51014 events. 35856/51014 cut-off events. For 183961/183961 co-relation queries the response was YES. Maximal size of possible extension queue 1952. Compared 335434 event pairs, 4858 based on Foata normal form. 1/49639 useless extension candidates. Maximal degree in co-relation 210329. Up to 25148 conditions per place. [2024-11-09 02:43:01,573 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 338 selfloop transitions, 156 changer transitions 14/509 dead transitions. [2024-11-09 02:43:01,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 509 transitions, 5388 flow [2024-11-09 02:43:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:43:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:43:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 327 transitions. [2024-11-09 02:43:01,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39255702280912363 [2024-11-09 02:43:01,575 INFO L175 Difference]: Start difference. First operand has 127 places, 226 transitions, 2256 flow. Second operand 17 states and 327 transitions. [2024-11-09 02:43:01,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 509 transitions, 5388 flow [2024-11-09 02:43:03,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 509 transitions, 5292 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-09 02:43:03,512 INFO L231 Difference]: Finished difference. Result has 147 places, 270 transitions, 3087 flow [2024-11-09 02:43:03,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3087, PETRI_PLACES=147, PETRI_TRANSITIONS=270} [2024-11-09 02:43:03,512 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-11-09 02:43:03,512 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 270 transitions, 3087 flow [2024-11-09 02:43:03,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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 02:43:03,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:03,512 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 02:43:03,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:03,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:03,713 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:03,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:03,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1742562783, now seen corresponding path program 4 times [2024-11-09 02:43:03,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:03,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334507848] [2024-11-09 02:43:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334507848] [2024-11-09 02:43:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334507848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671043102] [2024-11-09 02:43:03,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:43:03,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:03,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:03,836 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 02:43:03,837 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 02:43:03,907 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:43:03,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:03,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:43:03,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:04,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:04,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671043102] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:04,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:43:04,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 11] total 25 [2024-11-09 02:43:04,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252903516] [2024-11-09 02:43:04,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:04,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:43:04,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:04,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:43:04,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:43:04,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:43:04,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 270 transitions, 3087 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 02:43:04,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:04,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:43:04,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:10,554 INFO L124 PetriNetUnfolderBase]: 37265/52964 cut-off events. [2024-11-09 02:43:10,555 INFO L125 PetriNetUnfolderBase]: For 227781/227781 co-relation queries the response was YES. [2024-11-09 02:43:10,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228506 conditions, 52964 events. 37265/52964 cut-off events. For 227781/227781 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 348682 event pairs, 3699 based on Foata normal form. 4/51592 useless extension candidates. Maximal degree in co-relation 228459. Up to 12134 conditions per place. [2024-11-09 02:43:10,974 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 485 selfloop transitions, 173 changer transitions 12/671 dead transitions. [2024-11-09 02:43:10,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 671 transitions, 7996 flow [2024-11-09 02:43:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:43:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:43:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 344 transitions. [2024-11-09 02:43:10,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46802721088435373 [2024-11-09 02:43:10,976 INFO L175 Difference]: Start difference. First operand has 147 places, 270 transitions, 3087 flow. Second operand 15 states and 344 transitions. [2024-11-09 02:43:10,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 671 transitions, 7996 flow [2024-11-09 02:43:13,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 671 transitions, 7637 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-11-09 02:43:13,596 INFO L231 Difference]: Finished difference. Result has 160 places, 315 transitions, 3830 flow [2024-11-09 02:43:13,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3830, PETRI_PLACES=160, PETRI_TRANSITIONS=315} [2024-11-09 02:43:13,597 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-11-09 02:43:13,597 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 315 transitions, 3830 flow [2024-11-09 02:43:13,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 02:43:13,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:13,597 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 02:43:13,610 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 02:43:13,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:13,798 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:43:13,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:13,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1363015643, now seen corresponding path program 5 times [2024-11-09 02:43:13,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:13,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858540377] [2024-11-09 02:43:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:13,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858540377] [2024-11-09 02:43:13,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858540377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529262073] [2024-11-09 02:43:13,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:43:13,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:13,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:13,963 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 02:43:13,965 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 02:43:14,040 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:14,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:14,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:14,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:14,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:14,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529262073] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:14,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:43:14,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-11-09 02:43:14,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136520189] [2024-11-09 02:43:14,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:14,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:43:14,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:14,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:43:14,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:43:14,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:43:14,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 315 transitions, 3830 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:14,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:14,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:43:14,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand