./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/parallel-lamport.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 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:47:23,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:47:23,190 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:47:23,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:47:23,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:47:23,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:47:23,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:47:23,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:47:23,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:47:23,224 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:47:23,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:47:23,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:47:23,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:47:23,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:47:23,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:47:23,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:47:23,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:47:23,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:47:23,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:47:23,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:47:23,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:47:23,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:47:23,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:47:23,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:47:23,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:47:23,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:47:23,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:47:23,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:47:23,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:47:23,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:47:23,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:47:23,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:47:23,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:23,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:47:23,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:47:23,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:47:23,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:47:23,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:47:23,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:47:23,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:47:23,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:47:23,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:47:23,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 [2024-11-19 01:47:23,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:47:23,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:47:23,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:47:23,522 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:47:23,522 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:47:23,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-19 01:47:24,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:47:25,048 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:47:25,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-19 01:47:25,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f5b13dc/fc628d02af394ef09abc0319539b5114/FLAG20beb852a [2024-11-19 01:47:25,067 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f5b13dc/fc628d02af394ef09abc0319539b5114 [2024-11-19 01:47:25,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:47:25,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:47:25,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:25,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:47:25,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:47:25,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6ce154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25, skipping insertion in model container [2024-11-19 01:47:25,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:47:25,304 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/parallel-lamport.wvr.c[3044,3057] [2024-11-19 01:47:25,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:25,332 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:47:25,373 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/parallel-lamport.wvr.c[3044,3057] [2024-11-19 01:47:25,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:25,402 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:47:25,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25 WrapperNode [2024-11-19 01:47:25,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:25,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:25,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:47:25,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:47:25,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,446 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 207 [2024-11-19 01:47:25,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:25,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:47:25,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:47:25,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:47:25,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,506 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 01:47:25,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,513 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:47:25,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:47:25,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:47:25,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:47:25,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (1/1) ... [2024-11-19 01:47:25,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:25,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:25,555 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) [2024-11-19 01:47:25,557 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 [2024-11-19 01:47:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:47:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:47:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:47:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:47:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:47:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:47:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:47:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:47:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:47:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:47:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:47:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:47:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:47:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:47:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:47:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:47:25,603 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:47:25,716 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:47:25,718 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:47:25,989 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:47:25,990 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:47:26,113 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:47:26,113 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:47:26,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:26 BoogieIcfgContainer [2024-11-19 01:47:26,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:47:26,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:47:26,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:47:26,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:47:26,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:25" (1/3) ... [2024-11-19 01:47:26,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaf48a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:26, skipping insertion in model container [2024-11-19 01:47:26,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:25" (2/3) ... [2024-11-19 01:47:26,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaf48a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:26, skipping insertion in model container [2024-11-19 01:47:26,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:26" (3/3) ... [2024-11-19 01:47:26,120 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-11-19 01:47:26,131 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:47:26,132 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:47:26,132 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:47:26,168 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:47:26,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 141 flow [2024-11-19 01:47:26,219 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2024-11-19 01:47:26,220 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:47:26,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 1/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-19 01:47:26,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 60 transitions, 141 flow [2024-11-19 01:47:26,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 130 flow [2024-11-19 01:47:26,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:47:26,235 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;@c1999c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:47:26,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:47:26,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:47:26,249 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-11-19 01:47:26,249 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:47:26,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:26,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:26,251 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)] === [2024-11-19 01:47:26,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 397029173, now seen corresponding path program 1 times [2024-11-19 01:47:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109121551] [2024-11-19 01:47:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:26,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:26,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109121551] [2024-11-19 01:47:26,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109121551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:26,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:26,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111246904] [2024-11-19 01:47:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:26,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:47:26,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:47:26,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:47:26,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-11-19 01:47:26,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2024-11-19 01:47:26,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:26,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-11-19 01:47:26,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:27,004 INFO L124 PetriNetUnfolderBase]: 307/620 cut-off events. [2024-11-19 01:47:27,005 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-19 01:47:27,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 620 events. 307/620 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3464 event pairs, 306 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 1036. Up to 507 conditions per place. [2024-11-19 01:47:27,014 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 28 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-19 01:47:27,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 192 flow [2024-11-19 01:47:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:47:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:47:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-19 01:47:27,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-11-19 01:47:27,031 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 130 flow. Second operand 3 states and 121 transitions. [2024-11-19 01:47:27,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 192 flow [2024-11-19 01:47:27,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 180 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:47:27,036 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 130 flow [2024-11-19 01:47:27,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-11-19 01:47:27,040 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-19 01:47:27,040 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 130 flow [2024-11-19 01:47:27,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2024-11-19 01:47:27,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:27,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:27,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:47:27,041 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)] === [2024-11-19 01:47:27,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1513207931, now seen corresponding path program 1 times [2024-11-19 01:47:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:27,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192243065] [2024-11-19 01:47:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:27,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:27,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:27,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192243065] [2024-11-19 01:47:27,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192243065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:27,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86079526] [2024-11-19 01:47:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:27,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:27,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:27,724 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) [2024-11-19 01:47:27,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:47:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:27,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 01:47:27,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:27,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 01:47:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:28,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:29,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-19 01:47:29,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:47:29,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-19 01:47:29,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-11-19 01:47:29,535 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-19 01:47:29,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-19 01:47:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86079526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:29,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:29,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2024-11-19 01:47:29,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270723032] [2024-11-19 01:47:29,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:29,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 01:47:29,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:29,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 01:47:29,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-19 01:47:29,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-19 01:47:29,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 130 flow. Second operand has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 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) [2024-11-19 01:47:29,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:29,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-19 01:47:29,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:32,637 INFO L124 PetriNetUnfolderBase]: 4073/6876 cut-off events. [2024-11-19 01:47:32,638 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-19 01:47:32,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13409 conditions, 6876 events. 4073/6876 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 48346 event pairs, 563 based on Foata normal form. 4/6840 useless extension candidates. Maximal degree in co-relation 13379. Up to 1476 conditions per place. [2024-11-19 01:47:32,661 INFO L140 encePairwiseOnDemand]: 40/60 looper letters, 218 selfloop transitions, 122 changer transitions 95/453 dead transitions. [2024-11-19 01:47:32,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 453 transitions, 1862 flow [2024-11-19 01:47:32,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-19 01:47:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-19 01:47:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1342 transitions. [2024-11-19 01:47:32,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201550387596899 [2024-11-19 01:47:32,673 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 130 flow. Second operand 43 states and 1342 transitions. [2024-11-19 01:47:32,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 453 transitions, 1862 flow [2024-11-19 01:47:32,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 453 transitions, 1858 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:32,681 INFO L231 Difference]: Finished difference. Result has 120 places, 188 transitions, 845 flow [2024-11-19 01:47:32,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=845, PETRI_PLACES=120, PETRI_TRANSITIONS=188} [2024-11-19 01:47:32,683 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-19 01:47:32,685 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 188 transitions, 845 flow [2024-11-19 01:47:32,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 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) [2024-11-19 01:47:32,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:32,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:32,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:32,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:32,892 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)] === [2024-11-19 01:47:32,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1608375147, now seen corresponding path program 2 times [2024-11-19 01:47:32,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:32,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624609753] [2024-11-19 01:47:32,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:32,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:32,916 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:47:32,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:33,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624609753] [2024-11-19 01:47:33,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624609753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:33,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:33,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:47:33,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869467477] [2024-11-19 01:47:33,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:33,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:47:33,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:33,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:47:33,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:47:33,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-19 01:47:33,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 188 transitions, 845 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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) [2024-11-19 01:47:33,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:33,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-19 01:47:33,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:33,824 INFO L124 PetriNetUnfolderBase]: 4728/8589 cut-off events. [2024-11-19 01:47:33,824 INFO L125 PetriNetUnfolderBase]: For 12092/12284 co-relation queries the response was YES. [2024-11-19 01:47:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22962 conditions, 8589 events. 4728/8589 cut-off events. For 12092/12284 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 64376 event pairs, 1236 based on Foata normal form. 135/8492 useless extension candidates. Maximal degree in co-relation 22923. Up to 3149 conditions per place. [2024-11-19 01:47:33,870 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 166 selfloop transitions, 7 changer transitions 4/273 dead transitions. [2024-11-19 01:47:33,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 273 transitions, 1596 flow [2024-11-19 01:47:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:47:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:47:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-19 01:47:33,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-11-19 01:47:33,872 INFO L175 Difference]: Start difference. First operand has 120 places, 188 transitions, 845 flow. Second operand 5 states and 194 transitions. [2024-11-19 01:47:33,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 273 transitions, 1596 flow [2024-11-19 01:47:34,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 273 transitions, 1554 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-19 01:47:34,058 INFO L231 Difference]: Finished difference. Result has 120 places, 192 transitions, 858 flow [2024-11-19 01:47:34,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=120, PETRI_TRANSITIONS=192} [2024-11-19 01:47:34,059 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-19 01:47:34,059 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 192 transitions, 858 flow [2024-11-19 01:47:34,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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) [2024-11-19 01:47:34,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:34,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:34,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:47:34,060 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)] === [2024-11-19 01:47:34,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash -671902333, now seen corresponding path program 3 times [2024-11-19 01:47:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:34,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118683403] [2024-11-19 01:47:34,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:34,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:47:34,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:34,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118683403] [2024-11-19 01:47:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118683403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:47:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391126995] [2024-11-19 01:47:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:34,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:47:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:47:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:47:34,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-19 01:47:34,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 192 transitions, 858 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-19 01:47:34,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:34,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-19 01:47:34,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:36,754 INFO L124 PetriNetUnfolderBase]: 7108/12011 cut-off events. [2024-11-19 01:47:36,754 INFO L125 PetriNetUnfolderBase]: For 17080/17259 co-relation queries the response was YES. [2024-11-19 01:47:36,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 12011 events. 7108/12011 cut-off events. For 17080/17259 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86900 event pairs, 1361 based on Foata normal form. 179/12059 useless extension candidates. Maximal degree in co-relation 31480. Up to 7466 conditions per place. [2024-11-19 01:47:36,830 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 327 selfloop transitions, 180 changer transitions 42/569 dead transitions. [2024-11-19 01:47:36,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 569 transitions, 3716 flow [2024-11-19 01:47:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 01:47:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-19 01:47:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 929 transitions. [2024-11-19 01:47:36,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4553921568627451 [2024-11-19 01:47:36,834 INFO L175 Difference]: Start difference. First operand has 120 places, 192 transitions, 858 flow. Second operand 34 states and 929 transitions. [2024-11-19 01:47:36,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 569 transitions, 3716 flow [2024-11-19 01:47:37,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 569 transitions, 3712 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:37,107 INFO L231 Difference]: Finished difference. Result has 181 places, 354 transitions, 2479 flow [2024-11-19 01:47:37,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2479, PETRI_PLACES=181, PETRI_TRANSITIONS=354} [2024-11-19 01:47:37,108 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 116 predicate places. [2024-11-19 01:47:37,109 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 354 transitions, 2479 flow [2024-11-19 01:47:37,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-19 01:47:37,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:37,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:37,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:47:37,111 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)] === [2024-11-19 01:47:37,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash 985432113, now seen corresponding path program 4 times [2024-11-19 01:47:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:37,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73438767] [2024-11-19 01:47:37,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:37,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:37,136 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:37,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:37,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:37,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73438767] [2024-11-19 01:47:37,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73438767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:37,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:37,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:47:37,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585316252] [2024-11-19 01:47:37,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:37,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:47:37,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:47:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:47:37,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-19 01:47:37,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 354 transitions, 2479 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-19 01:47:37,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:37,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-19 01:47:37,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:40,146 INFO L124 PetriNetUnfolderBase]: 9459/15855 cut-off events. [2024-11-19 01:47:40,146 INFO L125 PetriNetUnfolderBase]: For 52050/52285 co-relation queries the response was YES. [2024-11-19 01:47:40,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59488 conditions, 15855 events. 9459/15855 cut-off events. For 52050/52285 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 119507 event pairs, 1671 based on Foata normal form. 235/15928 useless extension candidates. Maximal degree in co-relation 59223. Up to 9345 conditions per place. [2024-11-19 01:47:40,275 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 563 selfloop transitions, 308 changer transitions 33/924 dead transitions. [2024-11-19 01:47:40,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 924 transitions, 8095 flow [2024-11-19 01:47:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 01:47:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-19 01:47:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 961 transitions. [2024-11-19 01:47:40,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4576190476190476 [2024-11-19 01:47:40,278 INFO L175 Difference]: Start difference. First operand has 181 places, 354 transitions, 2479 flow. Second operand 35 states and 961 transitions. [2024-11-19 01:47:40,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 924 transitions, 8095 flow [2024-11-19 01:47:40,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 924 transitions, 7823 flow, removed 132 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:40,828 INFO L231 Difference]: Finished difference. Result has 237 places, 645 transitions, 5662 flow [2024-11-19 01:47:40,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5662, PETRI_PLACES=237, PETRI_TRANSITIONS=645} [2024-11-19 01:47:40,829 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 172 predicate places. [2024-11-19 01:47:40,829 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 645 transitions, 5662 flow [2024-11-19 01:47:40,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-19 01:47:40,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:40,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:40,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:47:40,830 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)] === [2024-11-19 01:47:40,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash 555613645, now seen corresponding path program 5 times [2024-11-19 01:47:40,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:40,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881861048] [2024-11-19 01:47:40,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:40,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:40,846 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:40,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:41,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:41,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881861048] [2024-11-19 01:47:41,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881861048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:41,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867950829] [2024-11-19 01:47:41,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:41,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:41,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:41,741 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) [2024-11-19 01:47:41,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:47:41,818 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:41,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:41,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 01:47:41,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:42,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:47:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:42,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:42,252 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:47:42,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-19 01:47:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867950829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:42,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-19 01:47:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641376247] [2024-11-19 01:47:42,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:42,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 01:47:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:42,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 01:47:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-19 01:47:42,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-19 01:47:42,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 645 transitions, 5662 flow. Second operand has 20 states, 20 states have (on average 24.25) internal successors, (485), 20 states have internal predecessors, (485), 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) [2024-11-19 01:47:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-19 01:47:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:45,630 INFO L124 PetriNetUnfolderBase]: 9551/16330 cut-off events. [2024-11-19 01:47:45,631 INFO L125 PetriNetUnfolderBase]: For 91176/91526 co-relation queries the response was YES. [2024-11-19 01:47:45,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71635 conditions, 16330 events. 9551/16330 cut-off events. For 91176/91526 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 128245 event pairs, 1562 based on Foata normal form. 250/16349 useless extension candidates. Maximal degree in co-relation 70212. Up to 5316 conditions per place. [2024-11-19 01:47:45,806 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 584 selfloop transitions, 258 changer transitions 13/885 dead transitions. [2024-11-19 01:47:45,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 885 transitions, 9295 flow [2024-11-19 01:47:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 01:47:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 01:47:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 521 transitions. [2024-11-19 01:47:45,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107843137254902 [2024-11-19 01:47:45,807 INFO L175 Difference]: Start difference. First operand has 237 places, 645 transitions, 5662 flow. Second operand 17 states and 521 transitions. [2024-11-19 01:47:45,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 885 transitions, 9295 flow [2024-11-19 01:47:46,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 885 transitions, 8501 flow, removed 397 selfloop flow, removed 0 redundant places. [2024-11-19 01:47:46,909 INFO L231 Difference]: Finished difference. Result has 260 places, 752 transitions, 6979 flow [2024-11-19 01:47:46,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=5160, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6979, PETRI_PLACES=260, PETRI_TRANSITIONS=752} [2024-11-19 01:47:46,910 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 195 predicate places. [2024-11-19 01:47:46,910 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 752 transitions, 6979 flow [2024-11-19 01:47:46,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 24.25) internal successors, (485), 20 states have internal predecessors, (485), 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) [2024-11-19 01:47:46,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:46,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:46,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:47:47,114 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,SelfDestructingSolverStorable5 [2024-11-19 01:47:47,115 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)] === [2024-11-19 01:47:47,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -385120347, now seen corresponding path program 6 times [2024-11-19 01:47:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358237743] [2024-11-19 01:47:47,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:47:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:47,155 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:47:47,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358237743] [2024-11-19 01:47:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358237743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:47:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208700260] [2024-11-19 01:47:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:47,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:47:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:47:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:47:47,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-19 01:47:47,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 752 transitions, 6979 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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) [2024-11-19 01:47:47,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:47,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-19 01:47:47,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:53,993 INFO L124 PetriNetUnfolderBase]: 16591/28006 cut-off events. [2024-11-19 01:47:53,993 INFO L125 PetriNetUnfolderBase]: For 180311/180636 co-relation queries the response was YES. [2024-11-19 01:47:54,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129165 conditions, 28006 events. 16591/28006 cut-off events. For 180311/180636 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 234104 event pairs, 2451 based on Foata normal form. 326/28133 useless extension candidates. Maximal degree in co-relation 127472. Up to 15457 conditions per place. [2024-11-19 01:47:54,567 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 991 selfloop transitions, 717 changer transitions 90/1818 dead transitions. [2024-11-19 01:47:54,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1818 transitions, 20912 flow [2024-11-19 01:47:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-19 01:47:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-19 01:47:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1609 transitions. [2024-11-19 01:47:54,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45451977401129945 [2024-11-19 01:47:54,570 INFO L175 Difference]: Start difference. First operand has 260 places, 752 transitions, 6979 flow. Second operand 59 states and 1609 transitions. [2024-11-19 01:47:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1818 transitions, 20912 flow [2024-11-19 01:47:57,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1818 transitions, 20716 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-11-19 01:47:57,409 INFO L231 Difference]: Finished difference. Result has 356 places, 1389 transitions, 16756 flow [2024-11-19 01:47:57,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=6901, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=16756, PETRI_PLACES=356, PETRI_TRANSITIONS=1389} [2024-11-19 01:47:57,412 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 291 predicate places. [2024-11-19 01:47:57,413 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 1389 transitions, 16756 flow [2024-11-19 01:47:57,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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) [2024-11-19 01:47:57,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:57,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:57,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:47:57,414 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)] === [2024-11-19 01:47:57,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1486415839, now seen corresponding path program 7 times [2024-11-19 01:47:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187118293] [2024-11-19 01:47:57,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:47:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:57,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187118293] [2024-11-19 01:47:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187118293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922496169] [2024-11-19 01:47:57,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:47:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:57,788 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) [2024-11-19 01:47:57,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:47:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:57,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-19 01:47:57,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:57,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:47:58,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:47:58,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2024-11-19 01:47:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:58,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:59,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-11-19 01:47:59,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:47:59,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 124 [2024-11-19 01:47:59,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-19 01:47:59,508 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-19 01:47:59,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 1 [2024-11-19 01:47:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:59,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922496169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:59,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:59,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 33 [2024-11-19 01:47:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558543194] [2024-11-19 01:47:59,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:59,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 01:47:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 01:47:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 01:47:59,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-11-19 01:47:59,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1389 transitions, 16756 flow. Second operand has 33 states, 33 states have (on average 20.96969696969697) internal successors, (692), 33 states have internal predecessors, (692), 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) [2024-11-19 01:47:59,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:59,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-11-19 01:47:59,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:13,047 INFO L124 PetriNetUnfolderBase]: 20525/35140 cut-off events. [2024-11-19 01:48:13,047 INFO L125 PetriNetUnfolderBase]: For 514522/514925 co-relation queries the response was YES. [2024-11-19 01:48:14,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195681 conditions, 35140 events. 20525/35140 cut-off events. For 514522/514925 co-relation queries the response was YES. Maximal size of possible extension queue 1998. Compared 311125 event pairs, 2456 based on Foata normal form. 415/35382 useless extension candidates. Maximal degree in co-relation 193096. Up to 9763 conditions per place. [2024-11-19 01:48:14,683 INFO L140 encePairwiseOnDemand]: 39/60 looper letters, 852 selfloop transitions, 495 changer transitions 963/2329 dead transitions. [2024-11-19 01:48:14,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 2329 transitions, 32305 flow [2024-11-19 01:48:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-19 01:48:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-19 01:48:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1473 transitions. [2024-11-19 01:48:14,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320754716981133 [2024-11-19 01:48:14,692 INFO L175 Difference]: Start difference. First operand has 356 places, 1389 transitions, 16756 flow. Second operand 53 states and 1473 transitions. [2024-11-19 01:48:14,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 2329 transitions, 32305 flow [2024-11-19 01:48:24,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 2329 transitions, 29439 flow, removed 1363 selfloop flow, removed 4 redundant places. [2024-11-19 01:48:24,440 INFO L231 Difference]: Finished difference. Result has 432 places, 1156 transitions, 13563 flow [2024-11-19 01:48:24,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=14642, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=971, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=13563, PETRI_PLACES=432, PETRI_TRANSITIONS=1156} [2024-11-19 01:48:24,444 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 367 predicate places. [2024-11-19 01:48:24,444 INFO L471 AbstractCegarLoop]: Abstraction has has 432 places, 1156 transitions, 13563 flow [2024-11-19 01:48:24,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 20.96969696969697) internal successors, (692), 33 states have internal predecessors, (692), 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) [2024-11-19 01:48:24,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:24,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:24,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:48:24,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:24,651 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)] === [2024-11-19 01:48:24,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:24,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1488062809, now seen corresponding path program 8 times [2024-11-19 01:48:24,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:24,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819759883] [2024-11-19 01:48:24,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:48:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:24,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:48:24,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:24,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819759883] [2024-11-19 01:48:24,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819759883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:24,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:24,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:48:24,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993344237] [2024-11-19 01:48:24,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:24,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:48:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:48:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:48:24,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-19 01:48:24,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1156 transitions, 13563 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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) [2024-11-19 01:48:24,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:24,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-19 01:48:24,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:33,645 INFO L124 PetriNetUnfolderBase]: 15920/27210 cut-off events. [2024-11-19 01:48:33,645 INFO L125 PetriNetUnfolderBase]: For 479371/479714 co-relation queries the response was YES. [2024-11-19 01:48:35,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156839 conditions, 27210 events. 15920/27210 cut-off events. For 479371/479714 co-relation queries the response was YES. Maximal size of possible extension queue 1424. Compared 230152 event pairs, 2905 based on Foata normal form. 343/27349 useless extension candidates. Maximal degree in co-relation 156636. Up to 18011 conditions per place. [2024-11-19 01:48:35,157 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 952 selfloop transitions, 487 changer transitions 64/1523 dead transitions. [2024-11-19 01:48:35,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1523 transitions, 21309 flow [2024-11-19 01:48:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 01:48:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 01:48:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 811 transitions. [2024-11-19 01:48:35,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46609195402298853 [2024-11-19 01:48:35,160 INFO L175 Difference]: Start difference. First operand has 432 places, 1156 transitions, 13563 flow. Second operand 29 states and 811 transitions. [2024-11-19 01:48:35,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 1523 transitions, 21309 flow [2024-11-19 01:48:41,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 1523 transitions, 19680 flow, removed 731 selfloop flow, removed 33 redundant places. [2024-11-19 01:48:41,663 INFO L231 Difference]: Finished difference. Result has 417 places, 1265 transitions, 15409 flow [2024-11-19 01:48:41,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=12439, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15409, PETRI_PLACES=417, PETRI_TRANSITIONS=1265} [2024-11-19 01:48:41,665 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 352 predicate places. [2024-11-19 01:48:41,665 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 1265 transitions, 15409 flow [2024-11-19 01:48:41,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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) [2024-11-19 01:48:41,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:41,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:41,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:48:41,665 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)] === [2024-11-19 01:48:41,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -927328337, now seen corresponding path program 9 times [2024-11-19 01:48:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151485030] [2024-11-19 01:48:41,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:48:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:41,684 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:48:41,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151485030] [2024-11-19 01:48:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151485030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:48:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:48:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:48:41,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899767190] [2024-11-19 01:48:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:48:41,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:48:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:48:41,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:48:41,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-19 01:48:41,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 1265 transitions, 15409 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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) [2024-11-19 01:48:41,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:41,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-19 01:48:41,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand