./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:32:40,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:32:40,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:32:40,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:32:40,419 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:32:40,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:32:40,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:32:40,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:32:40,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:32:40,443 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:32:40,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:32:40,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:32:40,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:32:40,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:32:40,445 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:32:40,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:32:40,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:32:40,451 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:32:40,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:32:40,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:32:40,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:32:40,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:32:40,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:32:40,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:32:40,453 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:32:40,453 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:32:40,454 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:32:40,454 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:32:40,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:32:40,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:32:40,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:32:40,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:32:40,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:32:40,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:32:40,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:32:40,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:32:40,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:32:40,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:32:40,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:32:40,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:32:40,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:32:40,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:32:40,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-10-24 12:32:40,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:32:40,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:32:40,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:32:40,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:32:40,763 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:32:40,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-24 12:32:42,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:32:42,474 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:32:42,474 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-10-24 12:32:42,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7a6492e/27b26cab6f9d4cbcafec3c6a89a88928/FLAG1fc6e2efa [2024-10-24 12:32:42,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7a6492e/27b26cab6f9d4cbcafec3c6a89a88928 [2024-10-24 12:32:42,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:32:42,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:32:42,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:32:42,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:32:42,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:32:42,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:42" (1/1) ... [2024-10-24 12:32:42,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e13dbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:42, skipping insertion in model container [2024-10-24 12:32:42,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:42" (1/1) ... [2024-10-24 12:32:42,888 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:32:43,118 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2024-10-24 12:32:43,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:32:43,151 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:32:43,182 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2707,2720] [2024-10-24 12:32:43,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:32:43,213 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:32:43,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43 WrapperNode [2024-10-24 12:32:43,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:32:43,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:32:43,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:32:43,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:32:43,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,273 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 191 [2024-10-24 12:32:43,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:32:43,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:32:43,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:32:43,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:32:43,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,320 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-24 12:32:43,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:32:43,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:32:43,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:32:43,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:32:43,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (1/1) ... [2024-10-24 12:32:43,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:32:43,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:43,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:32:43,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:32:43,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:32:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:32:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:32:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:32:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:32:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:32:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:32:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:32:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:32:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:32:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:32:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:32:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:32:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:32:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:32:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:32:43,450 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:32:43,578 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:32:43,580 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:32:43,948 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:32:43,948 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:32:44,236 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:32:44,237 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 12:32:44,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:44 BoogieIcfgContainer [2024-10-24 12:32:44,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:32:44,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:32:44,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:32:44,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:32:44,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:32:42" (1/3) ... [2024-10-24 12:32:44,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae8c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:44, skipping insertion in model container [2024-10-24 12:32:44,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:43" (2/3) ... [2024-10-24 12:32:44,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae8c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:44, skipping insertion in model container [2024-10-24 12:32:44,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:44" (3/3) ... [2024-10-24 12:32:44,250 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-10-24 12:32:44,271 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:32:44,272 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:32:44,272 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:32:44,320 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 12:32:44,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 66 flow [2024-10-24 12:32:44,396 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-24 12:32:44,396 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:32:44,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 4/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-24 12:32:44,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 26 transitions, 66 flow [2024-10-24 12:32:44,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 23 transitions, 58 flow [2024-10-24 12:32:44,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:32:44,423 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;@71fccfbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:32:44,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-24 12:32:44,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:32:44,433 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-10-24 12:32:44,433 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:32:44,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:44,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:44,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:44,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash -917773730, now seen corresponding path program 1 times [2024-10-24 12:32:44,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:44,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281902137] [2024-10-24 12:32:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:44,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:44,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:44,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281902137] [2024-10-24 12:32:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281902137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:44,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:44,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:32:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669625255] [2024-10-24 12:32:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:44,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:32:44,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:32:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:32:44,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-10-24 12:32:44,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:44,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:44,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-10-24 12:32:44,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:44,965 INFO L124 PetriNetUnfolderBase]: 94/185 cut-off events. [2024-10-24 12:32:44,966 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 12:32:44,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 185 events. 94/185 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 598 event pairs, 22 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 317. Up to 113 conditions per place. [2024-10-24 12:32:44,972 INFO L140 encePairwiseOnDemand]: 22/26 looper letters, 27 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2024-10-24 12:32:44,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 151 flow [2024-10-24 12:32:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:32:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:32:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-10-24 12:32:44,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-10-24 12:32:44,987 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 58 flow. Second operand 3 states and 47 transitions. [2024-10-24 12:32:44,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 151 flow [2024-10-24 12:32:44,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 12:32:44,995 INFO L231 Difference]: Finished difference. Result has 25 places, 25 transitions, 69 flow [2024-10-24 12:32:44,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=25, PETRI_TRANSITIONS=25} [2024-10-24 12:32:45,001 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2024-10-24 12:32:45,002 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 25 transitions, 69 flow [2024-10-24 12:32:45,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:45,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:45,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:45,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:32:45,005 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:45,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1358368092, now seen corresponding path program 1 times [2024-10-24 12:32:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:45,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372826786] [2024-10-24 12:32:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:45,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:45,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372826786] [2024-10-24 12:32:45,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372826786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:45,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963235162] [2024-10-24 12:32:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:45,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:45,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:45,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-10-24 12:32:45,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:45,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:45,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-10-24 12:32:45,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:45,564 INFO L124 PetriNetUnfolderBase]: 188/338 cut-off events. [2024-10-24 12:32:45,567 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-24 12:32:45,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 338 events. 188/338 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1342 event pairs, 62 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 197. Up to 187 conditions per place. [2024-10-24 12:32:45,571 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 39 selfloop transitions, 9 changer transitions 1/51 dead transitions. [2024-10-24 12:32:45,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 51 transitions, 240 flow [2024-10-24 12:32:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-10-24 12:32:45,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 12:32:45,579 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 69 flow. Second operand 5 states and 65 transitions. [2024-10-24 12:32:45,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 51 transitions, 240 flow [2024-10-24 12:32:45,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 51 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:32:45,584 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 124 flow [2024-10-24 12:32:45,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2024-10-24 12:32:45,586 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-10-24 12:32:45,586 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 124 flow [2024-10-24 12:32:45,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:45,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:45,587 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:45,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:32:45,588 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:45,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1429312728, now seen corresponding path program 2 times [2024-10-24 12:32:45,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:45,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549444361] [2024-10-24 12:32:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549444361] [2024-10-24 12:32:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549444361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:45,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:45,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:32:45,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814000850] [2024-10-24 12:32:45,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:45,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:32:45,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:32:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:32:45,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-10-24 12:32:45,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:45,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:45,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-10-24 12:32:45,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:45,990 INFO L124 PetriNetUnfolderBase]: 230/424 cut-off events. [2024-10-24 12:32:45,991 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-24 12:32:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 424 events. 230/424 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1838 event pairs, 30 based on Foata normal form. 13/435 useless extension candidates. Maximal degree in co-relation 567. Up to 122 conditions per place. [2024-10-24 12:32:45,999 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 62 selfloop transitions, 12 changer transitions 1/77 dead transitions. [2024-10-24 12:32:46,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 77 transitions, 437 flow [2024-10-24 12:32:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:32:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:32:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-10-24 12:32:46,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-10-24 12:32:46,004 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 124 flow. Second operand 7 states and 92 transitions. [2024-10-24 12:32:46,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 77 transitions, 437 flow [2024-10-24 12:32:46,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 77 transitions, 437 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:32:46,010 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 212 flow [2024-10-24 12:32:46,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-10-24 12:32:46,013 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-24 12:32:46,013 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 212 flow [2024-10-24 12:32:46,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:46,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:46,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:46,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:32:46,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:46,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash 469608532, now seen corresponding path program 3 times [2024-10-24 12:32:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051495778] [2024-10-24 12:32:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:46,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051495778] [2024-10-24 12:32:46,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051495778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:46,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:46,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:46,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145570008] [2024-10-24 12:32:46,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:46,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:46,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:46,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:46,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-10-24 12:32:46,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:46,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:46,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-10-24 12:32:46,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:46,331 INFO L124 PetriNetUnfolderBase]: 292/535 cut-off events. [2024-10-24 12:32:46,331 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2024-10-24 12:32:46,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 535 events. 292/535 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2346 event pairs, 92 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 1351. Up to 262 conditions per place. [2024-10-24 12:32:46,338 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 52 selfloop transitions, 10 changer transitions 4/68 dead transitions. [2024-10-24 12:32:46,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 497 flow [2024-10-24 12:32:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-24 12:32:46,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-10-24 12:32:46,342 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 212 flow. Second operand 5 states and 63 transitions. [2024-10-24 12:32:46,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 497 flow [2024-10-24 12:32:46,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 485 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 12:32:46,350 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 259 flow [2024-10-24 12:32:46,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-10-24 12:32:46,352 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2024-10-24 12:32:46,353 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 259 flow [2024-10-24 12:32:46,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:46,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:46,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:46,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:32:46,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:46,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1005547373, now seen corresponding path program 1 times [2024-10-24 12:32:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:46,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204378469] [2024-10-24 12:32:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:46,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:46,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204378469] [2024-10-24 12:32:46,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204378469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:46,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:46,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267332644] [2024-10-24 12:32:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:46,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:46,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-10-24 12:32:46,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:46,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:46,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-10-24 12:32:46,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:46,622 INFO L124 PetriNetUnfolderBase]: 305/553 cut-off events. [2024-10-24 12:32:46,623 INFO L125 PetriNetUnfolderBase]: For 1229/1233 co-relation queries the response was YES. [2024-10-24 12:32:46,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 553 events. 305/553 cut-off events. For 1229/1233 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2519 event pairs, 107 based on Foata normal form. 3/549 useless extension candidates. Maximal degree in co-relation 1783. Up to 290 conditions per place. [2024-10-24 12:32:46,629 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 52 selfloop transitions, 7 changer transitions 7/69 dead transitions. [2024-10-24 12:32:46,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 533 flow [2024-10-24 12:32:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-10-24 12:32:46,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-10-24 12:32:46,632 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 259 flow. Second operand 5 states and 67 transitions. [2024-10-24 12:32:46,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 533 flow [2024-10-24 12:32:46,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 494 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-24 12:32:46,638 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 261 flow [2024-10-24 12:32:46,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-10-24 12:32:46,639 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2024-10-24 12:32:46,639 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 261 flow [2024-10-24 12:32:46,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:46,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:46,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:46,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:32:46,640 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:46,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:46,641 INFO L85 PathProgramCache]: Analyzing trace with hash -710500163, now seen corresponding path program 2 times [2024-10-24 12:32:46,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:46,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152170134] [2024-10-24 12:32:46,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:46,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152170134] [2024-10-24 12:32:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152170134] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:32:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360447622] [2024-10-24 12:32:46,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:32:46,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:46,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:32:46,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:32:46,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:32:46,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:32:46,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 12:32:46,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:32:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:46,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:32:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:46,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360447622] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:32:46,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:32:46,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-24 12:32:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146688172] [2024-10-24 12:32:46,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:32:46,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:32:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:32:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:32:46,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:46,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 261 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:46,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:46,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:46,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:47,294 INFO L124 PetriNetUnfolderBase]: 428/738 cut-off events. [2024-10-24 12:32:47,294 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-10-24 12:32:47,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 738 events. 428/738 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3120 event pairs, 22 based on Foata normal form. 12/748 useless extension candidates. Maximal degree in co-relation 2151. Up to 147 conditions per place. [2024-10-24 12:32:47,301 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 75 selfloop transitions, 52 changer transitions 2/130 dead transitions. [2024-10-24 12:32:47,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 1038 flow [2024-10-24 12:32:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:32:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:32:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 135 transitions. [2024-10-24 12:32:47,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3708791208791209 [2024-10-24 12:32:47,304 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 261 flow. Second operand 14 states and 135 transitions. [2024-10-24 12:32:47,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 1038 flow [2024-10-24 12:32:47,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 130 transitions, 981 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-24 12:32:47,311 INFO L231 Difference]: Finished difference. Result has 65 places, 79 transitions, 678 flow [2024-10-24 12:32:47,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=678, PETRI_PLACES=65, PETRI_TRANSITIONS=79} [2024-10-24 12:32:47,312 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-10-24 12:32:47,313 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 79 transitions, 678 flow [2024-10-24 12:32:47,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:47,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:47,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:47,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:32:47,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-24 12:32:47,515 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:47,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1226407250, now seen corresponding path program 4 times [2024-10-24 12:32:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269657308] [2024-10-24 12:32:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:47,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:47,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269657308] [2024-10-24 12:32:47,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269657308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:47,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:47,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:47,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140728458] [2024-10-24 12:32:47,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:47,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:47,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:47,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:47,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 79 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:47,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:47,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:47,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:47,745 INFO L124 PetriNetUnfolderBase]: 417/721 cut-off events. [2024-10-24 12:32:47,745 INFO L125 PetriNetUnfolderBase]: For 2403/2403 co-relation queries the response was YES. [2024-10-24 12:32:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 721 events. 417/721 cut-off events. For 2403/2403 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3054 event pairs, 131 based on Foata normal form. 8/727 useless extension candidates. Maximal degree in co-relation 2651. Up to 433 conditions per place. [2024-10-24 12:32:47,752 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 77 selfloop transitions, 27 changer transitions 0/105 dead transitions. [2024-10-24 12:32:47,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 1018 flow [2024-10-24 12:32:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-10-24 12:32:47,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-10-24 12:32:47,753 INFO L175 Difference]: Start difference. First operand has 65 places, 79 transitions, 678 flow. Second operand 5 states and 64 transitions. [2024-10-24 12:32:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 1018 flow [2024-10-24 12:32:47,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 953 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-10-24 12:32:47,763 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 682 flow [2024-10-24 12:32:47,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=682, PETRI_PLACES=67, PETRI_TRANSITIONS=80} [2024-10-24 12:32:47,764 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2024-10-24 12:32:47,764 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 682 flow [2024-10-24 12:32:47,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:47,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:47,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:47,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:32:47,765 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:47,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash -641270421, now seen corresponding path program 3 times [2024-10-24 12:32:47,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:47,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623162429] [2024-10-24 12:32:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:47,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623162429] [2024-10-24 12:32:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623162429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:47,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:47,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:32:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600691245] [2024-10-24 12:32:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:47,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:32:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:32:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:32:47,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:47,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:47,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:47,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:47,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:48,076 INFO L124 PetriNetUnfolderBase]: 429/741 cut-off events. [2024-10-24 12:32:48,076 INFO L125 PetriNetUnfolderBase]: For 2543/2543 co-relation queries the response was YES. [2024-10-24 12:32:48,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3128 conditions, 741 events. 429/741 cut-off events. For 2543/2543 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3163 event pairs, 132 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 2815. Up to 433 conditions per place. [2024-10-24 12:32:48,083 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 81 selfloop transitions, 34 changer transitions 0/116 dead transitions. [2024-10-24 12:32:48,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 116 transitions, 1106 flow [2024-10-24 12:32:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:32:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:32:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-10-24 12:32:48,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-10-24 12:32:48,084 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 682 flow. Second operand 6 states and 73 transitions. [2024-10-24 12:32:48,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 116 transitions, 1106 flow [2024-10-24 12:32:48,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 1034 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 12:32:48,092 INFO L231 Difference]: Finished difference. Result has 69 places, 83 transitions, 723 flow [2024-10-24 12:32:48,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=723, PETRI_PLACES=69, PETRI_TRANSITIONS=83} [2024-10-24 12:32:48,093 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 43 predicate places. [2024-10-24 12:32:48,093 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 83 transitions, 723 flow [2024-10-24 12:32:48,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:48,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:48,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:48,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:32:48,094 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:48,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1589498937, now seen corresponding path program 4 times [2024-10-24 12:32:48,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:48,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227166904] [2024-10-24 12:32:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:48,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:48,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227166904] [2024-10-24 12:32:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227166904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862670987] [2024-10-24 12:32:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:48,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:48,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-10-24 12:32:48,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 83 transitions, 723 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:48,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:48,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-10-24 12:32:48,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:48,324 INFO L124 PetriNetUnfolderBase]: 383/686 cut-off events. [2024-10-24 12:32:48,324 INFO L125 PetriNetUnfolderBase]: For 2408/2426 co-relation queries the response was YES. [2024-10-24 12:32:48,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 686 events. 383/686 cut-off events. For 2408/2426 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3081 event pairs, 113 based on Foata normal form. 3/679 useless extension candidates. Maximal degree in co-relation 2553. Up to 394 conditions per place. [2024-10-24 12:32:48,330 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 63 selfloop transitions, 23 changer transitions 4/108 dead transitions. [2024-10-24 12:32:48,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 108 transitions, 1042 flow [2024-10-24 12:32:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-24 12:32:48,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-10-24 12:32:48,332 INFO L175 Difference]: Start difference. First operand has 69 places, 83 transitions, 723 flow. Second operand 5 states and 63 transitions. [2024-10-24 12:32:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 108 transitions, 1042 flow [2024-10-24 12:32:48,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 108 transitions, 994 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 12:32:48,339 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 714 flow [2024-10-24 12:32:48,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2024-10-24 12:32:48,342 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2024-10-24 12:32:48,342 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 714 flow [2024-10-24 12:32:48,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:48,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:48,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:48,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:32:48,343 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:48,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1656258960, now seen corresponding path program 5 times [2024-10-24 12:32:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333255504] [2024-10-24 12:32:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:48,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:48,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333255504] [2024-10-24 12:32:48,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333255504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:48,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:48,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:32:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951708513] [2024-10-24 12:32:48,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:48,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:32:48,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:48,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:32:48,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:32:48,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:48,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 714 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:48,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:48,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:48,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:48,635 INFO L124 PetriNetUnfolderBase]: 492/849 cut-off events. [2024-10-24 12:32:48,635 INFO L125 PetriNetUnfolderBase]: For 2706/2706 co-relation queries the response was YES. [2024-10-24 12:32:48,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 849 events. 492/849 cut-off events. For 2706/2706 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3784 event pairs, 129 based on Foata normal form. 9/856 useless extension candidates. Maximal degree in co-relation 3116. Up to 439 conditions per place. [2024-10-24 12:32:48,643 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 90 selfloop transitions, 30 changer transitions 0/121 dead transitions. [2024-10-24 12:32:48,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 121 transitions, 1183 flow [2024-10-24 12:32:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:32:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:32:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-10-24 12:32:48,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-10-24 12:32:48,644 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 714 flow. Second operand 6 states and 74 transitions. [2024-10-24 12:32:48,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 121 transitions, 1183 flow [2024-10-24 12:32:48,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 121 transitions, 1127 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-24 12:32:48,652 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 779 flow [2024-10-24 12:32:48,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=779, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2024-10-24 12:32:48,653 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-10-24 12:32:48,653 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 779 flow [2024-10-24 12:32:48,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:48,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:48,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:48,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:32:48,654 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:48,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1210490047, now seen corresponding path program 5 times [2024-10-24 12:32:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341378305] [2024-10-24 12:32:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:48,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:48,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:48,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341378305] [2024-10-24 12:32:48,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341378305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:48,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:48,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:48,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226991402] [2024-10-24 12:32:48,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:48,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:48,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:48,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:48,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:48,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-10-24 12:32:48,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 779 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:48,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:48,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-10-24 12:32:48,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:48,919 INFO L124 PetriNetUnfolderBase]: 433/779 cut-off events. [2024-10-24 12:32:48,919 INFO L125 PetriNetUnfolderBase]: For 3021/3045 co-relation queries the response was YES. [2024-10-24 12:32:48,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 779 events. 433/779 cut-off events. For 3021/3045 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3641 event pairs, 137 based on Foata normal form. 3/773 useless extension candidates. Maximal degree in co-relation 2867. Up to 412 conditions per place. [2024-10-24 12:32:48,926 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 60 selfloop transitions, 30 changer transitions 1/109 dead transitions. [2024-10-24 12:32:48,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 1116 flow [2024-10-24 12:32:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-10-24 12:32:48,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 12:32:48,928 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 779 flow. Second operand 5 states and 65 transitions. [2024-10-24 12:32:48,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 1116 flow [2024-10-24 12:32:48,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 1057 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-24 12:32:48,936 INFO L231 Difference]: Finished difference. Result has 74 places, 92 transitions, 876 flow [2024-10-24 12:32:48,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=74, PETRI_TRANSITIONS=92} [2024-10-24 12:32:48,937 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2024-10-24 12:32:48,937 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 92 transitions, 876 flow [2024-10-24 12:32:48,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:48,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:48,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:48,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:32:48,938 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:48,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:48,939 INFO L85 PathProgramCache]: Analyzing trace with hash -111148459, now seen corresponding path program 6 times [2024-10-24 12:32:48,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:48,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329886660] [2024-10-24 12:32:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:48,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:49,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329886660] [2024-10-24 12:32:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329886660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:49,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:32:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44977299] [2024-10-24 12:32:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:49,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:32:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:32:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:32:49,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:49,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 92 transitions, 876 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:49,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:49,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:49,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:49,213 INFO L124 PetriNetUnfolderBase]: 506/874 cut-off events. [2024-10-24 12:32:49,214 INFO L125 PetriNetUnfolderBase]: For 3156/3156 co-relation queries the response was YES. [2024-10-24 12:32:49,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3703 conditions, 874 events. 506/874 cut-off events. For 3156/3156 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3922 event pairs, 140 based on Foata normal form. 16/888 useless extension candidates. Maximal degree in co-relation 3445. Up to 411 conditions per place. [2024-10-24 12:32:49,221 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 80 selfloop transitions, 35 changer transitions 2/118 dead transitions. [2024-10-24 12:32:49,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 1232 flow [2024-10-24 12:32:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:32:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:32:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-10-24 12:32:49,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-10-24 12:32:49,223 INFO L175 Difference]: Start difference. First operand has 74 places, 92 transitions, 876 flow. Second operand 6 states and 76 transitions. [2024-10-24 12:32:49,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 1232 flow [2024-10-24 12:32:49,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 1185 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-24 12:32:49,236 INFO L231 Difference]: Finished difference. Result has 80 places, 94 transitions, 921 flow [2024-10-24 12:32:49,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=80, PETRI_TRANSITIONS=94} [2024-10-24 12:32:49,237 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2024-10-24 12:32:49,237 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 94 transitions, 921 flow [2024-10-24 12:32:49,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:49,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:49,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:49,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 12:32:49,238 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:49,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2077923714, now seen corresponding path program 6 times [2024-10-24 12:32:49,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:49,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316277270] [2024-10-24 12:32:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316277270] [2024-10-24 12:32:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316277270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:49,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:49,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:32:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97354063] [2024-10-24 12:32:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:49,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:32:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:32:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:32:49,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2024-10-24 12:32:49,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 94 transitions, 921 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:49,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:49,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2024-10-24 12:32:49,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:49,506 INFO L124 PetriNetUnfolderBase]: 416/749 cut-off events. [2024-10-24 12:32:49,506 INFO L125 PetriNetUnfolderBase]: For 2955/2967 co-relation queries the response was YES. [2024-10-24 12:32:49,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 749 events. 416/749 cut-off events. For 2955/2967 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3510 event pairs, 128 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 3056. Up to 399 conditions per place. [2024-10-24 12:32:49,513 INFO L140 encePairwiseOnDemand]: 20/26 looper letters, 70 selfloop transitions, 27 changer transitions 2/106 dead transitions. [2024-10-24 12:32:49,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 106 transitions, 1160 flow [2024-10-24 12:32:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-24 12:32:49,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-10-24 12:32:49,514 INFO L175 Difference]: Start difference. First operand has 80 places, 94 transitions, 921 flow. Second operand 5 states and 60 transitions. [2024-10-24 12:32:49,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 106 transitions, 1160 flow [2024-10-24 12:32:49,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 106 transitions, 1067 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-10-24 12:32:49,522 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 874 flow [2024-10-24 12:32:49,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=874, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2024-10-24 12:32:49,523 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2024-10-24 12:32:49,523 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 874 flow [2024-10-24 12:32:49,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:49,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:49,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:49,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 12:32:49,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:49,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash 201793112, now seen corresponding path program 7 times [2024-10-24 12:32:49,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:49,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631470895] [2024-10-24 12:32:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:32:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631470895] [2024-10-24 12:32:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631470895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:49,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:49,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:32:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440847238] [2024-10-24 12:32:49,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:49,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:32:49,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:32:49,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:32:49,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:49,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 874 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:49,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:49,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:49,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:49,784 INFO L124 PetriNetUnfolderBase]: 483/821 cut-off events. [2024-10-24 12:32:49,785 INFO L125 PetriNetUnfolderBase]: For 2944/2944 co-relation queries the response was YES. [2024-10-24 12:32:49,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3409 conditions, 821 events. 483/821 cut-off events. For 2944/2944 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3565 event pairs, 145 based on Foata normal form. 9/828 useless extension candidates. Maximal degree in co-relation 2844. Up to 457 conditions per place. [2024-10-24 12:32:49,793 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 81 selfloop transitions, 31 changer transitions 1/114 dead transitions. [2024-10-24 12:32:49,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 1180 flow [2024-10-24 12:32:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:32:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:32:49,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-10-24 12:32:49,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-10-24 12:32:49,795 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 874 flow. Second operand 6 states and 70 transitions. [2024-10-24 12:32:49,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 1180 flow [2024-10-24 12:32:49,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 114 transitions, 1126 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-24 12:32:49,803 INFO L231 Difference]: Finished difference. Result has 75 places, 93 transitions, 880 flow [2024-10-24 12:32:49,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=880, PETRI_PLACES=75, PETRI_TRANSITIONS=93} [2024-10-24 12:32:49,803 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 49 predicate places. [2024-10-24 12:32:49,804 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 93 transitions, 880 flow [2024-10-24 12:32:49,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:49,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:49,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:49,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 12:32:49,804 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:49,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1913229141, now seen corresponding path program 1 times [2024-10-24 12:32:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377673224] [2024-10-24 12:32:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:49,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:49,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377673224] [2024-10-24 12:32:49,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377673224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:49,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:49,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:32:49,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648459257] [2024-10-24 12:32:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:49,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:32:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:32:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:32:49,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-10-24 12:32:49,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 93 transitions, 880 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:49,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:49,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-10-24 12:32:49,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:50,072 INFO L124 PetriNetUnfolderBase]: 365/717 cut-off events. [2024-10-24 12:32:50,072 INFO L125 PetriNetUnfolderBase]: For 3103/3133 co-relation queries the response was YES. [2024-10-24 12:32:50,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 717 events. 365/717 cut-off events. For 3103/3133 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3595 event pairs, 162 based on Foata normal form. 25/732 useless extension candidates. Maximal degree in co-relation 2559. Up to 558 conditions per place. [2024-10-24 12:32:50,078 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 66 selfloop transitions, 2 changer transitions 15/109 dead transitions. [2024-10-24 12:32:50,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 1160 flow [2024-10-24 12:32:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:32:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:32:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-10-24 12:32:50,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-10-24 12:32:50,079 INFO L175 Difference]: Start difference. First operand has 75 places, 93 transitions, 880 flow. Second operand 5 states and 59 transitions. [2024-10-24 12:32:50,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 1160 flow [2024-10-24 12:32:50,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 1090 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-24 12:32:50,087 INFO L231 Difference]: Finished difference. Result has 77 places, 94 transitions, 841 flow [2024-10-24 12:32:50,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=841, PETRI_PLACES=77, PETRI_TRANSITIONS=94} [2024-10-24 12:32:50,087 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2024-10-24 12:32:50,087 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 94 transitions, 841 flow [2024-10-24 12:32:50,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:50,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:50,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:50,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 12:32:50,088 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:50,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash -447768941, now seen corresponding path program 1 times [2024-10-24 12:32:50,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:50,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678654226] [2024-10-24 12:32:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:50,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:50,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:50,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678654226] [2024-10-24 12:32:50,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678654226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:32:50,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:32:50,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:32:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249691572] [2024-10-24 12:32:50,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:32:50,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:32:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:32:50,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:32:50,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-10-24 12:32:50,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 94 transitions, 841 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:50,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:50,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-10-24 12:32:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:50,293 INFO L124 PetriNetUnfolderBase]: 363/714 cut-off events. [2024-10-24 12:32:50,293 INFO L125 PetriNetUnfolderBase]: For 2596/2638 co-relation queries the response was YES. [2024-10-24 12:32:50,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2929 conditions, 714 events. 363/714 cut-off events. For 2596/2638 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3571 event pairs, 162 based on Foata normal form. 25/731 useless extension candidates. Maximal degree in co-relation 2897. Up to 559 conditions per place. [2024-10-24 12:32:50,299 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 67 selfloop transitions, 2 changer transitions 11/106 dead transitions. [2024-10-24 12:32:50,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 1100 flow [2024-10-24 12:32:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:32:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:32:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2024-10-24 12:32:50,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-10-24 12:32:50,300 INFO L175 Difference]: Start difference. First operand has 77 places, 94 transitions, 841 flow. Second operand 4 states and 50 transitions. [2024-10-24 12:32:50,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 1100 flow [2024-10-24 12:32:50,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 1084 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-24 12:32:50,308 INFO L231 Difference]: Finished difference. Result has 77 places, 95 transitions, 845 flow [2024-10-24 12:32:50,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=845, PETRI_PLACES=77, PETRI_TRANSITIONS=95} [2024-10-24 12:32:50,308 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2024-10-24 12:32:50,308 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 95 transitions, 845 flow [2024-10-24 12:32:50,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:50,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:50,309 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:50,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 12:32:50,309 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:50,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2092765735, now seen corresponding path program 1 times [2024-10-24 12:32:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:50,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871926256] [2024-10-24 12:32:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:50,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871926256] [2024-10-24 12:32:50,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871926256] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:32:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454048941] [2024-10-24 12:32:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:50,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:50,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:50,572 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) [2024-10-24 12:32:50,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:32:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:50,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 12:32:50,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:32:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:50,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:32:50,784 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 36 treesize of output 12 [2024-10-24 12:32:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:50,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454048941] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:32:50,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:32:50,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-10-24 12:32:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040580248] [2024-10-24 12:32:50,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:32:50,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:32:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:32:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:32:50,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-10-24 12:32:50,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 95 transitions, 845 flow. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:50,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:50,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-10-24 12:32:50,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:51,225 INFO L124 PetriNetUnfolderBase]: 1072/1996 cut-off events. [2024-10-24 12:32:51,225 INFO L125 PetriNetUnfolderBase]: For 6743/6893 co-relation queries the response was YES. [2024-10-24 12:32:51,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 1996 events. 1072/1996 cut-off events. For 6743/6893 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 12018 event pairs, 143 based on Foata normal form. 54/2044 useless extension candidates. Maximal degree in co-relation 6496. Up to 521 conditions per place. [2024-10-24 12:32:51,240 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 225 selfloop transitions, 14 changer transitions 4/269 dead transitions. [2024-10-24 12:32:51,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 269 transitions, 2858 flow [2024-10-24 12:32:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:32:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:32:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-10-24 12:32:51,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5341880341880342 [2024-10-24 12:32:51,241 INFO L175 Difference]: Start difference. First operand has 77 places, 95 transitions, 845 flow. Second operand 9 states and 125 transitions. [2024-10-24 12:32:51,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 269 transitions, 2858 flow [2024-10-24 12:32:51,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 269 transitions, 2842 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-24 12:32:51,258 INFO L231 Difference]: Finished difference. Result has 86 places, 108 transitions, 954 flow [2024-10-24 12:32:51,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=954, PETRI_PLACES=86, PETRI_TRANSITIONS=108} [2024-10-24 12:32:51,259 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 60 predicate places. [2024-10-24 12:32:51,259 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 108 transitions, 954 flow [2024-10-24 12:32:51,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:51,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:51,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:51,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:32:51,460 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,SelfDestructingSolverStorable16 [2024-10-24 12:32:51,461 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:51,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1625193775, now seen corresponding path program 2 times [2024-10-24 12:32:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757381971] [2024-10-24 12:32:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:51,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757381971] [2024-10-24 12:32:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757381971] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:32:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064528803] [2024-10-24 12:32:51,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:32:51,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:51,685 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) [2024-10-24 12:32:51,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:32:51,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:32:51,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:32:51,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 12:32:51,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:32:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:51,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:32:51,872 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 36 treesize of output 12 [2024-10-24 12:32:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:32:51,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064528803] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:32:51,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:32:51,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-10-24 12:32:51,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043166150] [2024-10-24 12:32:51,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:32:51,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:32:51,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:51,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:32:51,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:32:51,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2024-10-24 12:32:51,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 108 transitions, 954 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:51,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:51,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2024-10-24 12:32:51,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:52,733 INFO L124 PetriNetUnfolderBase]: 2651/4950 cut-off events. [2024-10-24 12:32:52,733 INFO L125 PetriNetUnfolderBase]: For 18161/18453 co-relation queries the response was YES. [2024-10-24 12:32:52,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20662 conditions, 4950 events. 2651/4950 cut-off events. For 18161/18453 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 35324 event pairs, 405 based on Foata normal form. 167/5109 useless extension candidates. Maximal degree in co-relation 15779. Up to 1606 conditions per place. [2024-10-24 12:32:52,772 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 224 selfloop transitions, 23 changer transitions 18/291 dead transitions. [2024-10-24 12:32:52,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 291 transitions, 3114 flow [2024-10-24 12:32:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:32:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 12:32:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-10-24 12:32:52,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-10-24 12:32:52,773 INFO L175 Difference]: Start difference. First operand has 86 places, 108 transitions, 954 flow. Second operand 8 states and 114 transitions. [2024-10-24 12:32:52,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 291 transitions, 3114 flow [2024-10-24 12:32:52,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 291 transitions, 3066 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-10-24 12:32:52,822 INFO L231 Difference]: Finished difference. Result has 97 places, 126 transitions, 1142 flow [2024-10-24 12:32:52,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1142, PETRI_PLACES=97, PETRI_TRANSITIONS=126} [2024-10-24 12:32:52,822 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2024-10-24 12:32:52,822 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 126 transitions, 1142 flow [2024-10-24 12:32:52,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:52,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:52,823 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:52,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 12:32:53,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 12:32:53,024 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:53,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1808361791, now seen corresponding path program 3 times [2024-10-24 12:32:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873475919] [2024-10-24 12:32:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:53,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:53,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873475919] [2024-10-24 12:32:53,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873475919] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:32:53,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106881451] [2024-10-24 12:32:53,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:32:53,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:53,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:53,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:32:53,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:32:53,299 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 12:32:53,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:32:53,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:32:53,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:32:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:53,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:32:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:53,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106881451] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:32:53,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:32:53,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-24 12:32:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804694040] [2024-10-24 12:32:53,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:32:53,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 12:32:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 12:32:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:32:53,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:53,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 126 transitions, 1142 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:53,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:53,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:53,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:55,154 INFO L124 PetriNetUnfolderBase]: 4834/8047 cut-off events. [2024-10-24 12:32:55,154 INFO L125 PetriNetUnfolderBase]: For 23630/23630 co-relation queries the response was YES. [2024-10-24 12:32:55,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33461 conditions, 8047 events. 4834/8047 cut-off events. For 23630/23630 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 52076 event pairs, 183 based on Foata normal form. 240/8287 useless extension candidates. Maximal degree in co-relation 28087. Up to 1475 conditions per place. [2024-10-24 12:32:55,221 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 373 selfloop transitions, 123 changer transitions 8/505 dead transitions. [2024-10-24 12:32:55,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 505 transitions, 4865 flow [2024-10-24 12:32:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-24 12:32:55,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-24 12:32:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 287 transitions. [2024-10-24 12:32:55,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3806366047745358 [2024-10-24 12:32:55,223 INFO L175 Difference]: Start difference. First operand has 97 places, 126 transitions, 1142 flow. Second operand 29 states and 287 transitions. [2024-10-24 12:32:55,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 505 transitions, 4865 flow [2024-10-24 12:32:55,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 505 transitions, 4814 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-10-24 12:32:55,295 INFO L231 Difference]: Finished difference. Result has 144 places, 204 transitions, 2209 flow [2024-10-24 12:32:55,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2209, PETRI_PLACES=144, PETRI_TRANSITIONS=204} [2024-10-24 12:32:55,296 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 118 predicate places. [2024-10-24 12:32:55,296 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 204 transitions, 2209 flow [2024-10-24 12:32:55,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:55,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:55,297 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:55,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:32:55,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:55,498 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:55,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1935508487, now seen corresponding path program 4 times [2024-10-24 12:32:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697185342] [2024-10-24 12:32:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:55,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:55,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697185342] [2024-10-24 12:32:55,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697185342] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:32:55,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183833185] [2024-10-24 12:32:55,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:32:55,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:55,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:55,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:32:55,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:32:55,679 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:32:55,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:32:55,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:32:55,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:32:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:55,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:32:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:55,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183833185] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:32:55,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:32:55,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-24 12:32:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814669154] [2024-10-24 12:32:55,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:32:55,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:32:55,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:55,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:32:55,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:32:55,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:55,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 204 transitions, 2209 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:55,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:55,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:55,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:32:57,639 INFO L124 PetriNetUnfolderBase]: 6736/11196 cut-off events. [2024-10-24 12:32:57,639 INFO L125 PetriNetUnfolderBase]: For 73665/73665 co-relation queries the response was YES. [2024-10-24 12:32:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58582 conditions, 11196 events. 6736/11196 cut-off events. For 73665/73665 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 75443 event pairs, 336 based on Foata normal form. 81/11277 useless extension candidates. Maximal degree in co-relation 56948. Up to 2360 conditions per place. [2024-10-24 12:32:57,745 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 270 selfloop transitions, 178 changer transitions 9/458 dead transitions. [2024-10-24 12:32:57,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 458 transitions, 5315 flow [2024-10-24 12:32:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 12:32:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 12:32:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 152 transitions. [2024-10-24 12:32:57,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38974358974358975 [2024-10-24 12:32:57,747 INFO L175 Difference]: Start difference. First operand has 144 places, 204 transitions, 2209 flow. Second operand 15 states and 152 transitions. [2024-10-24 12:32:57,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 458 transitions, 5315 flow [2024-10-24 12:32:58,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 458 transitions, 5035 flow, removed 125 selfloop flow, removed 4 redundant places. [2024-10-24 12:32:58,321 INFO L231 Difference]: Finished difference. Result has 161 places, 284 transitions, 3400 flow [2024-10-24 12:32:58,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3400, PETRI_PLACES=161, PETRI_TRANSITIONS=284} [2024-10-24 12:32:58,322 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2024-10-24 12:32:58,322 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 284 transitions, 3400 flow [2024-10-24 12:32:58,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:58,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:32:58,323 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:32:58,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 12:32:58,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:58,524 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:32:58,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:32:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1473023666, now seen corresponding path program 5 times [2024-10-24 12:32:58,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:32:58,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236424996] [2024-10-24 12:32:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:32:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:32:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:32:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:32:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236424996] [2024-10-24 12:32:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236424996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:32:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233962846] [2024-10-24 12:32:58,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 12:32:58,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:32:58,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:32:58,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:32:58,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:32:58,736 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 12:32:58,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:32:58,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:32:58,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:32:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:58,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:32:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:32:58,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233962846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:32:58,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:32:58,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-24 12:32:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211671811] [2024-10-24 12:32:58,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:32:58,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:32:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:32:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:32:58,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:32:58,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:32:58,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 284 transitions, 3400 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:32:58,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:32:58,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:32:58,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:00,868 INFO L124 PetriNetUnfolderBase]: 7479/12457 cut-off events. [2024-10-24 12:33:00,868 INFO L125 PetriNetUnfolderBase]: For 111224/111224 co-relation queries the response was YES. [2024-10-24 12:33:00,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70728 conditions, 12457 events. 7479/12457 cut-off events. For 111224/111224 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 85664 event pairs, 1940 based on Foata normal form. 9/12466 useless extension candidates. Maximal degree in co-relation 68873. Up to 7773 conditions per place. [2024-10-24 12:33:00,964 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 335 selfloop transitions, 45 changer transitions 17/398 dead transitions. [2024-10-24 12:33:00,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 398 transitions, 5262 flow [2024-10-24 12:33:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:33:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:33:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-10-24 12:33:00,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-10-24 12:33:00,965 INFO L175 Difference]: Start difference. First operand has 161 places, 284 transitions, 3400 flow. Second operand 7 states and 86 transitions. [2024-10-24 12:33:00,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 398 transitions, 5262 flow [2024-10-24 12:33:01,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 398 transitions, 5160 flow, removed 51 selfloop flow, removed 0 redundant places. [2024-10-24 12:33:01,878 INFO L231 Difference]: Finished difference. Result has 170 places, 293 transitions, 3531 flow [2024-10-24 12:33:01,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3531, PETRI_PLACES=170, PETRI_TRANSITIONS=293} [2024-10-24 12:33:01,879 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 144 predicate places. [2024-10-24 12:33:01,879 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 293 transitions, 3531 flow [2024-10-24 12:33:01,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:01,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:01,879 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:01,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 12:33:02,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:02,080 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:33:02,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:02,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1388022526, now seen corresponding path program 6 times [2024-10-24 12:33:02,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:02,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625940804] [2024-10-24 12:33:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:02,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:02,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:02,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625940804] [2024-10-24 12:33:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625940804] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:02,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136086135] [2024-10-24 12:33:02,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 12:33:02,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:02,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:02,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:02,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 12:33:02,279 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-24 12:33:02,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:02,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:02,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:02,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136086135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:02,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 12:33:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743111557] [2024-10-24 12:33:02,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:02,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:33:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:33:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:33:02,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:33:02,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 293 transitions, 3531 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:02,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:02,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:33:02,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:05,119 INFO L124 PetriNetUnfolderBase]: 9297/15237 cut-off events. [2024-10-24 12:33:05,119 INFO L125 PetriNetUnfolderBase]: For 140757/140757 co-relation queries the response was YES. [2024-10-24 12:33:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87972 conditions, 15237 events. 9297/15237 cut-off events. For 140757/140757 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 105516 event pairs, 1198 based on Foata normal form. 166/15403 useless extension candidates. Maximal degree in co-relation 87256. Up to 5286 conditions per place. [2024-10-24 12:33:05,244 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 490 selfloop transitions, 166 changer transitions 3/660 dead transitions. [2024-10-24 12:33:05,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 660 transitions, 8193 flow [2024-10-24 12:33:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 12:33:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 12:33:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 230 transitions. [2024-10-24 12:33:05,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4020979020979021 [2024-10-24 12:33:05,246 INFO L175 Difference]: Start difference. First operand has 170 places, 293 transitions, 3531 flow. Second operand 22 states and 230 transitions. [2024-10-24 12:33:05,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 660 transitions, 8193 flow [2024-10-24 12:33:06,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 660 transitions, 8098 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-10-24 12:33:06,368 INFO L231 Difference]: Finished difference. Result has 196 places, 366 transitions, 5156 flow [2024-10-24 12:33:06,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3461, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5156, PETRI_PLACES=196, PETRI_TRANSITIONS=366} [2024-10-24 12:33:06,369 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 170 predicate places. [2024-10-24 12:33:06,369 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 366 transitions, 5156 flow [2024-10-24 12:33:06,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:06,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:06,369 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:06,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 12:33:06,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:06,570 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:33:06,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1312729564, now seen corresponding path program 7 times [2024-10-24 12:33:06,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:06,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139431861] [2024-10-24 12:33:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:06,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139431861] [2024-10-24 12:33:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139431861] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773070218] [2024-10-24 12:33:06,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 12:33:06,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:06,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:06,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:06,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 12:33:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:06,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:06,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:06,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773070218] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:06,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:06,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-24 12:33:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36646767] [2024-10-24 12:33:06,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:06,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:33:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:33:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:33:06,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:33:06,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 366 transitions, 5156 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:06,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:06,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:33:06,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:10,001 INFO L124 PetriNetUnfolderBase]: 9369/15390 cut-off events. [2024-10-24 12:33:10,002 INFO L125 PetriNetUnfolderBase]: For 182273/182273 co-relation queries the response was YES. [2024-10-24 12:33:10,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97996 conditions, 15390 events. 9369/15390 cut-off events. For 182273/182273 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 107153 event pairs, 2488 based on Foata normal form. 30/15420 useless extension candidates. Maximal degree in co-relation 97230. Up to 10466 conditions per place. [2024-10-24 12:33:10,128 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 423 selfloop transitions, 77 changer transitions 16/517 dead transitions. [2024-10-24 12:33:10,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 517 transitions, 7425 flow [2024-10-24 12:33:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:33:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 12:33:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-10-24 12:33:10,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43006993006993005 [2024-10-24 12:33:10,130 INFO L175 Difference]: Start difference. First operand has 196 places, 366 transitions, 5156 flow. Second operand 11 states and 123 transitions. [2024-10-24 12:33:10,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 517 transitions, 7425 flow [2024-10-24 12:33:12,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 517 transitions, 6779 flow, removed 230 selfloop flow, removed 7 redundant places. [2024-10-24 12:33:12,372 INFO L231 Difference]: Finished difference. Result has 202 places, 360 transitions, 4605 flow [2024-10-24 12:33:12,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=4512, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4605, PETRI_PLACES=202, PETRI_TRANSITIONS=360} [2024-10-24 12:33:12,373 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-10-24 12:33:12,373 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 360 transitions, 4605 flow [2024-10-24 12:33:12,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:12,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:12,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:12,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 12:33:12,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-24 12:33:12,574 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:33:12,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1629265695, now seen corresponding path program 8 times [2024-10-24 12:33:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432929860] [2024-10-24 12:33:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:12,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:12,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432929860] [2024-10-24 12:33:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432929860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:12,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075893721] [2024-10-24 12:33:12,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:33:12,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:12,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:12,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:12,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 12:33:12,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:33:12,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:12,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:12,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:12,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075893721] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:12,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-24 12:33:12,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739153985] [2024-10-24 12:33:12,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:12,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:33:12,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:33:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:33:12,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:33:12,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 360 transitions, 4605 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:12,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:12,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:33:12,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:16,515 INFO L124 PetriNetUnfolderBase]: 11627/19115 cut-off events. [2024-10-24 12:33:16,516 INFO L125 PetriNetUnfolderBase]: For 174211/174211 co-relation queries the response was YES. [2024-10-24 12:33:16,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111290 conditions, 19115 events. 11627/19115 cut-off events. For 174211/174211 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 136677 event pairs, 502 based on Foata normal form. 226/19341 useless extension candidates. Maximal degree in co-relation 110546. Up to 5896 conditions per place. [2024-10-24 12:33:16,711 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 362 selfloop transitions, 275 changer transitions 6/644 dead transitions. [2024-10-24 12:33:16,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 644 transitions, 8532 flow [2024-10-24 12:33:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 12:33:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 12:33:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 168 transitions. [2024-10-24 12:33:16,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-10-24 12:33:16,713 INFO L175 Difference]: Start difference. First operand has 202 places, 360 transitions, 4605 flow. Second operand 16 states and 168 transitions. [2024-10-24 12:33:16,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 644 transitions, 8532 flow [2024-10-24 12:33:18,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 644 transitions, 8247 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-10-24 12:33:18,578 INFO L231 Difference]: Finished difference. Result has 219 places, 444 transitions, 6397 flow [2024-10-24 12:33:18,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=4358, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6397, PETRI_PLACES=219, PETRI_TRANSITIONS=444} [2024-10-24 12:33:18,578 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 193 predicate places. [2024-10-24 12:33:18,578 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 444 transitions, 6397 flow [2024-10-24 12:33:18,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:18,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:18,579 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:18,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 12:33:18,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 12:33:18,779 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:33:18,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:18,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1085553406, now seen corresponding path program 9 times [2024-10-24 12:33:18,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:18,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978908540] [2024-10-24 12:33:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:18,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978908540] [2024-10-24 12:33:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978908540] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667319248] [2024-10-24 12:33:18,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:33:18,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:18,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:18,896 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:18,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 12:33:19,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 12:33:19,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:19,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:19,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:19,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667319248] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:19,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:19,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 12:33:19,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743101104] [2024-10-24 12:33:19,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:19,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 12:33:19,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 12:33:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:33:19,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:33:19,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 444 transitions, 6397 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:19,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:19,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:33:19,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:22,969 INFO L124 PetriNetUnfolderBase]: 11599/19072 cut-off events. [2024-10-24 12:33:22,969 INFO L125 PetriNetUnfolderBase]: For 241007/241007 co-relation queries the response was YES. [2024-10-24 12:33:23,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123859 conditions, 19072 events. 11599/19072 cut-off events. For 241007/241007 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 136699 event pairs, 2905 based on Foata normal form. 51/19123 useless extension candidates. Maximal degree in co-relation 123095. Up to 11654 conditions per place. [2024-10-24 12:33:23,138 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 525 selfloop transitions, 107 changer transitions 4/637 dead transitions. [2024-10-24 12:33:23,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 637 transitions, 9331 flow [2024-10-24 12:33:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:33:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:33:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-10-24 12:33:23,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-10-24 12:33:23,140 INFO L175 Difference]: Start difference. First operand has 219 places, 444 transitions, 6397 flow. Second operand 12 states and 137 transitions. [2024-10-24 12:33:23,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 637 transitions, 9331 flow [2024-10-24 12:33:26,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 637 transitions, 9188 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-10-24 12:33:26,315 INFO L231 Difference]: Finished difference. Result has 223 places, 440 transitions, 6446 flow [2024-10-24 12:33:26,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=6221, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6446, PETRI_PLACES=223, PETRI_TRANSITIONS=440} [2024-10-24 12:33:26,316 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 197 predicate places. [2024-10-24 12:33:26,316 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 440 transitions, 6446 flow [2024-10-24 12:33:26,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:26,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:26,316 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:26,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 12:33:26,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-24 12:33:26,517 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:33:26,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:26,518 INFO L85 PathProgramCache]: Analyzing trace with hash 49892430, now seen corresponding path program 10 times [2024-10-24 12:33:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921387261] [2024-10-24 12:33:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:26,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921387261] [2024-10-24 12:33:26,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921387261] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:26,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991120245] [2024-10-24 12:33:26,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:33:26,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:26,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:26,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 12:33:26,749 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:33:26,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:26,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:26,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:26,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 12:33:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991120245] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:26,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:26,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-24 12:33:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056805256] [2024-10-24 12:33:26,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:26,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:33:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:33:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:33:26,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:33:26,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 440 transitions, 6446 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:26,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:26,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:33:26,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:30,858 INFO L124 PetriNetUnfolderBase]: 12893/21080 cut-off events. [2024-10-24 12:33:30,858 INFO L125 PetriNetUnfolderBase]: For 288914/288914 co-relation queries the response was YES. [2024-10-24 12:33:30,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140470 conditions, 21080 events. 12893/21080 cut-off events. For 288914/288914 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 151572 event pairs, 1397 based on Foata normal form. 66/21146 useless extension candidates. Maximal degree in co-relation 139701. Up to 13052 conditions per place. [2024-10-24 12:33:31,057 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 564 selfloop transitions, 122 changer transitions 10/697 dead transitions. [2024-10-24 12:33:31,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 697 transitions, 10275 flow [2024-10-24 12:33:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 12:33:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 12:33:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-10-24 12:33:31,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-10-24 12:33:31,059 INFO L175 Difference]: Start difference. First operand has 223 places, 440 transitions, 6446 flow. Second operand 14 states and 160 transitions. [2024-10-24 12:33:31,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 697 transitions, 10275 flow [2024-10-24 12:33:35,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 697 transitions, 9994 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-10-24 12:33:35,605 INFO L231 Difference]: Finished difference. Result has 230 places, 468 transitions, 7043 flow [2024-10-24 12:33:35,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=6189, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7043, PETRI_PLACES=230, PETRI_TRANSITIONS=468} [2024-10-24 12:33:35,606 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 204 predicate places. [2024-10-24 12:33:35,606 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 468 transitions, 7043 flow [2024-10-24 12:33:35,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:35,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:35,607 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:35,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 12:33:35,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 12:33:35,807 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:33:35,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -213240680, now seen corresponding path program 11 times [2024-10-24 12:33:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:35,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267102915] [2024-10-24 12:33:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:35,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267102915] [2024-10-24 12:33:35,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267102915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016166455] [2024-10-24 12:33:35,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 12:33:35,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:35,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:35,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:35,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 12:33:36,020 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-24 12:33:36,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:36,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:36,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:36,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 12:33:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016166455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:36,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:36,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-24 12:33:36,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154964425] [2024-10-24 12:33:36,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:36,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:33:36,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:33:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:33:36,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:33:36,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 468 transitions, 7043 flow. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:36,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:36,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:33:36,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:33:40,528 INFO L124 PetriNetUnfolderBase]: 13075/21372 cut-off events. [2024-10-24 12:33:40,528 INFO L125 PetriNetUnfolderBase]: For 297415/297415 co-relation queries the response was YES. [2024-10-24 12:33:40,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143852 conditions, 21372 events. 13075/21372 cut-off events. For 297415/297415 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 154227 event pairs, 545 based on Foata normal form. 116/21488 useless extension candidates. Maximal degree in co-relation 143084. Up to 6612 conditions per place. [2024-10-24 12:33:40,773 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 570 selfloop transitions, 246 changer transitions 4/821 dead transitions. [2024-10-24 12:33:40,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 821 transitions, 11918 flow [2024-10-24 12:33:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 12:33:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 12:33:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 254 transitions. [2024-10-24 12:33:40,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3757396449704142 [2024-10-24 12:33:40,775 INFO L175 Difference]: Start difference. First operand has 230 places, 468 transitions, 7043 flow. Second operand 26 states and 254 transitions. [2024-10-24 12:33:40,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 821 transitions, 11918 flow [2024-10-24 12:33:45,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 821 transitions, 11655 flow, removed 127 selfloop flow, removed 1 redundant places. [2024-10-24 12:33:45,326 INFO L231 Difference]: Finished difference. Result has 264 places, 501 transitions, 7950 flow [2024-10-24 12:33:45,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=6782, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7950, PETRI_PLACES=264, PETRI_TRANSITIONS=501} [2024-10-24 12:33:45,327 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 238 predicate places. [2024-10-24 12:33:45,327 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 501 transitions, 7950 flow [2024-10-24 12:33:45,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:45,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:33:45,327 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:33:45,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-24 12:33:45,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-24 12:33:45,528 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:33:45,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:33:45,529 INFO L85 PathProgramCache]: Analyzing trace with hash 543451522, now seen corresponding path program 12 times [2024-10-24 12:33:45,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:33:45,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851997353] [2024-10-24 12:33:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:33:45,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:33:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:33:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:33:45,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851997353] [2024-10-24 12:33:45,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851997353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:33:45,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933787156] [2024-10-24 12:33:45,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 12:33:45,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:33:45,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:33:45,630 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:33:45,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 12:33:45,736 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-24 12:33:45,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:33:45,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:33:45,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:33:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:45,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:33:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:33:45,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933787156] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:33:45,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:33:45,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-24 12:33:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716447626] [2024-10-24 12:33:45,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:33:45,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 12:33:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:33:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 12:33:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:33:45,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 26 [2024-10-24 12:33:45,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 501 transitions, 7950 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:33:45,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:33:45,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 26 [2024-10-24 12:33:45,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand