./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-hard1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-hard1.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 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:51:17,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:51:17,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:51:17,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:51:17,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:51:17,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:51:17,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:51:17,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:51:17,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:51:17,422 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:51:17,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:51:17,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:51:17,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:51:17,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:51:17,425 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:51:17,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:51:17,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:51:17,426 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:51:17,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:51:17,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:51:17,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:51:17,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:51:17,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:51:17,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:51:17,430 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:51:17,430 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:51:17,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:51:17,431 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:51:17,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:51:17,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:51:17,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:51:17,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:51:17,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:51:17,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:51:17,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:51:17,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:51:17,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:51:17,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:51:17,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:51:17,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:51:17,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:51:17,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:51:17,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f393fd72a97393a0a39d407b9330aa7c1c7e210ad76310ea88c9427f882106 [2024-11-09 02:51:17,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:51:17,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:51:17,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:51:17,669 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:51:17,669 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:51:17,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-hard1.wvr.c [2024-11-09 02:51:18,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:51:19,030 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:51:19,030 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-hard1.wvr.c [2024-11-09 02:51:19,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59a9b3a5/0c852d69d13d42239f22edd5f42b75b8/FLAGb60242996 [2024-11-09 02:51:19,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59a9b3a5/0c852d69d13d42239f22edd5f42b75b8 [2024-11-09 02:51:19,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:51:19,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:51:19,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:51:19,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:51:19,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:51:19,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35caf320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19, skipping insertion in model container [2024-11-09 02:51:19,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,071 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:51:19,239 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-hard1.wvr.c[3425,3438] [2024-11-09 02:51:19,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:51:19,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:51:19,272 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-hard1.wvr.c[3425,3438] [2024-11-09 02:51:19,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:51:19,289 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:51:19,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19 WrapperNode [2024-11-09 02:51:19,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:51:19,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:51:19,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:51:19,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:51:19,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,317 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-11-09 02:51:19,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:51:19,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:51:19,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:51:19,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:51:19,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,337 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 02:51:19,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:51:19,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:51:19,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:51:19,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:51:19,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (1/1) ... [2024-11-09 02:51:19,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:51:19,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:19,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:51:19,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:51:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:51:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:51:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:51:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:51:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:51:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:51:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:51:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 02:51:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 02:51:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:51:19,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:51:19,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:51:19,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:51:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:51:19,417 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:51:19,529 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:51:19,530 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:51:19,742 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:51:19,743 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:51:19,857 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:51:19,858 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:51:19,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:51:19 BoogieIcfgContainer [2024-11-09 02:51:19,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:51:19,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:51:19,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:51:19,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:51:19,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:51:19" (1/3) ... [2024-11-09 02:51:19,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ed3419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:51:19, skipping insertion in model container [2024-11-09 02:51:19,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:19" (2/3) ... [2024-11-09 02:51:19,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ed3419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:51:19, skipping insertion in model container [2024-11-09 02:51:19,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:51:19" (3/3) ... [2024-11-09 02:51:19,865 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2024-11-09 02:51:19,878 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:51:19,879 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:51:19,879 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:51:19,924 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 02:51:19,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 44 transitions, 116 flow [2024-11-09 02:51:19,982 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2024-11-09 02:51:19,982 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:51:19,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 40 events. 4/40 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-09 02:51:19,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 44 transitions, 116 flow [2024-11-09 02:51:19,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 102 flow [2024-11-09 02:51:19,996 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:51:20,001 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;@63e6d84d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:51:20,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:51:20,015 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:51:20,015 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-09 02:51:20,016 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:51:20,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:20,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:20,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:20,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash 796291079, now seen corresponding path program 1 times [2024-11-09 02:51:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156655729] [2024-11-09 02:51:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:20,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156655729] [2024-11-09 02:51:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156655729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:20,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:20,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:51:20,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134938350] [2024-11-09 02:51:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:20,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:51:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:20,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:51:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:51:20,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-09 02:51:20,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-09 02:51:20,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:20,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-09 02:51:20,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:20,702 INFO L124 PetriNetUnfolderBase]: 1367/2172 cut-off events. [2024-11-09 02:51:20,702 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-09 02:51:20,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 2172 events. 1367/2172 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11248 event pairs, 123 based on Foata normal form. 1/2116 useless extension candidates. Maximal degree in co-relation 3481. Up to 1541 conditions per place. [2024-11-09 02:51:20,721 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 35 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-11-09 02:51:20,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 243 flow [2024-11-09 02:51:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:51:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:51:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-09 02:51:20,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7954545454545454 [2024-11-09 02:51:20,732 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-11-09 02:51:20,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 243 flow [2024-11-09 02:51:20,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 213 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-09 02:51:20,741 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 119 flow [2024-11-09 02:51:20,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2024-11-09 02:51:20,746 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-11-09 02:51:20,747 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 119 flow [2024-11-09 02:51:20,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-09 02:51:20,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:20,747 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:20,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:51:20,747 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:20,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1225789468, now seen corresponding path program 1 times [2024-11-09 02:51:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:20,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208130980] [2024-11-09 02:51:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:20,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:21,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:21,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208130980] [2024-11-09 02:51:21,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208130980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:21,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:21,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:21,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445407259] [2024-11-09 02:51:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:21,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:51:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:21,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:51:21,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:51:21,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-09 02:51:21,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:21,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:21,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-09 02:51:21,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:21,499 INFO L124 PetriNetUnfolderBase]: 3258/4771 cut-off events. [2024-11-09 02:51:21,500 INFO L125 PetriNetUnfolderBase]: For 1296/1311 co-relation queries the response was YES. [2024-11-09 02:51:21,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10883 conditions, 4771 events. 3258/4771 cut-off events. For 1296/1311 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 28042 event pairs, 1020 based on Foata normal form. 1/4272 useless extension candidates. Maximal degree in co-relation 2057. Up to 2161 conditions per place. [2024-11-09 02:51:21,524 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 81 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2024-11-09 02:51:21,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 102 transitions, 478 flow [2024-11-09 02:51:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:51:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:51:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-09 02:51:21,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7227272727272728 [2024-11-09 02:51:21,527 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 119 flow. Second operand 5 states and 159 transitions. [2024-11-09 02:51:21,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 102 transitions, 478 flow [2024-11-09 02:51:21,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 102 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:21,531 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 176 flow [2024-11-09 02:51:21,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2024-11-09 02:51:21,531 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-11-09 02:51:21,532 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 176 flow [2024-11-09 02:51:21,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:21,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:21,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:21,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:51:21,533 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:21,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1851486408, now seen corresponding path program 2 times [2024-11-09 02:51:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:21,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272525325] [2024-11-09 02:51:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:21,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:21,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272525325] [2024-11-09 02:51:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272525325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:21,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:21,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262191634] [2024-11-09 02:51:21,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:21,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:21,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:51:21,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-09 02:51:21,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:21,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:21,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-09 02:51:21,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:22,323 INFO L124 PetriNetUnfolderBase]: 4138/6013 cut-off events. [2024-11-09 02:51:22,323 INFO L125 PetriNetUnfolderBase]: For 4016/4634 co-relation queries the response was YES. [2024-11-09 02:51:22,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16411 conditions, 6013 events. 4138/6013 cut-off events. For 4016/4634 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 33576 event pairs, 396 based on Foata normal form. 458/6310 useless extension candidates. Maximal degree in co-relation 5417. Up to 4698 conditions per place. [2024-11-09 02:51:22,353 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 72 selfloop transitions, 21 changer transitions 1/106 dead transitions. [2024-11-09 02:51:22,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 106 transitions, 552 flow [2024-11-09 02:51:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-11-09 02:51:22,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6931818181818182 [2024-11-09 02:51:22,355 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 176 flow. Second operand 6 states and 183 transitions. [2024-11-09 02:51:22,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 106 transitions, 552 flow [2024-11-09 02:51:22,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 106 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:22,359 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 317 flow [2024-11-09 02:51:22,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-11-09 02:51:22,360 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2024-11-09 02:51:22,360 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 317 flow [2024-11-09 02:51:22,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:22,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:22,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:22,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:51:22,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:22,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1802938078, now seen corresponding path program 3 times [2024-11-09 02:51:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960849463] [2024-11-09 02:51:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:22,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:22,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:22,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960849463] [2024-11-09 02:51:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960849463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:22,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:22,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086533663] [2024-11-09 02:51:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:22,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:51:22,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-09 02:51:22,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:22,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:22,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-09 02:51:22,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:23,324 INFO L124 PetriNetUnfolderBase]: 6426/9377 cut-off events. [2024-11-09 02:51:23,325 INFO L125 PetriNetUnfolderBase]: For 11177/12269 co-relation queries the response was YES. [2024-11-09 02:51:23,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27515 conditions, 9377 events. 6426/9377 cut-off events. For 11177/12269 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 59062 event pairs, 1012 based on Foata normal form. 992/10046 useless extension candidates. Maximal degree in co-relation 21926. Up to 4305 conditions per place. [2024-11-09 02:51:23,383 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 149 selfloop transitions, 43 changer transitions 0/205 dead transitions. [2024-11-09 02:51:23,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 205 transitions, 1411 flow [2024-11-09 02:51:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:51:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:51:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2024-11-09 02:51:23,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6919191919191919 [2024-11-09 02:51:23,387 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 317 flow. Second operand 9 states and 274 transitions. [2024-11-09 02:51:23,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 205 transitions, 1411 flow [2024-11-09 02:51:23,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 205 transitions, 1325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:51:23,406 INFO L231 Difference]: Finished difference. Result has 70 places, 102 transitions, 727 flow [2024-11-09 02:51:23,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=727, PETRI_PLACES=70, PETRI_TRANSITIONS=102} [2024-11-09 02:51:23,408 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2024-11-09 02:51:23,408 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 102 transitions, 727 flow [2024-11-09 02:51:23,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:23,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:23,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:23,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:51:23,409 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:23,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1140415634, now seen corresponding path program 4 times [2024-11-09 02:51:23,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:23,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836650813] [2024-11-09 02:51:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:23,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:23,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:23,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836650813] [2024-11-09 02:51:23,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836650813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:23,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861284228] [2024-11-09 02:51:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:23,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:51:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:51:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:51:23,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-09 02:51:23,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 102 transitions, 727 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:23,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:23,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-09 02:51:23,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:25,001 INFO L124 PetriNetUnfolderBase]: 13144/18577 cut-off events. [2024-11-09 02:51:25,001 INFO L125 PetriNetUnfolderBase]: For 30591/31417 co-relation queries the response was YES. [2024-11-09 02:51:25,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59817 conditions, 18577 events. 13144/18577 cut-off events. For 30591/31417 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 123726 event pairs, 2489 based on Foata normal form. 505/18312 useless extension candidates. Maximal degree in co-relation 48258. Up to 6385 conditions per place. [2024-11-09 02:51:25,123 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 165 selfloop transitions, 65 changer transitions 0/245 dead transitions. [2024-11-09 02:51:25,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 245 transitions, 2080 flow [2024-11-09 02:51:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-11-09 02:51:25,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2024-11-09 02:51:25,125 INFO L175 Difference]: Start difference. First operand has 70 places, 102 transitions, 727 flow. Second operand 6 states and 196 transitions. [2024-11-09 02:51:25,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 245 transitions, 2080 flow [2024-11-09 02:51:25,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 245 transitions, 2076 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-09 02:51:25,160 INFO L231 Difference]: Finished difference. Result has 80 places, 142 transitions, 1375 flow [2024-11-09 02:51:25,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1375, PETRI_PLACES=80, PETRI_TRANSITIONS=142} [2024-11-09 02:51:25,161 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 32 predicate places. [2024-11-09 02:51:25,161 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 142 transitions, 1375 flow [2024-11-09 02:51:25,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:25,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:25,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:25,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:51:25,162 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:25,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:25,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1419906266, now seen corresponding path program 5 times [2024-11-09 02:51:25,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:25,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803549290] [2024-11-09 02:51:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:25,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:25,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:25,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803549290] [2024-11-09 02:51:25,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803549290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:25,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:25,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:51:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330861895] [2024-11-09 02:51:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:25,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:51:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:51:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:51:25,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-09 02:51:25,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 142 transitions, 1375 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:25,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:25,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-09 02:51:25,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:27,724 INFO L124 PetriNetUnfolderBase]: 20124/29610 cut-off events. [2024-11-09 02:51:27,724 INFO L125 PetriNetUnfolderBase]: For 94176/97899 co-relation queries the response was YES. [2024-11-09 02:51:27,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110693 conditions, 29610 events. 20124/29610 cut-off events. For 94176/97899 co-relation queries the response was YES. Maximal size of possible extension queue 2031. Compared 210237 event pairs, 2222 based on Foata normal form. 3107/31638 useless extension candidates. Maximal degree in co-relation 83983. Up to 17493 conditions per place. [2024-11-09 02:51:27,908 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 170 selfloop transitions, 76 changer transitions 1/265 dead transitions. [2024-11-09 02:51:27,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 265 transitions, 2662 flow [2024-11-09 02:51:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:51:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:51:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-11-09 02:51:27,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7102272727272727 [2024-11-09 02:51:27,910 INFO L175 Difference]: Start difference. First operand has 80 places, 142 transitions, 1375 flow. Second operand 8 states and 250 transitions. [2024-11-09 02:51:27,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 265 transitions, 2662 flow [2024-11-09 02:51:28,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 265 transitions, 2662 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:51:28,070 INFO L231 Difference]: Finished difference. Result has 89 places, 147 transitions, 1597 flow [2024-11-09 02:51:28,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1597, PETRI_PLACES=89, PETRI_TRANSITIONS=147} [2024-11-09 02:51:28,070 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 41 predicate places. [2024-11-09 02:51:28,071 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 147 transitions, 1597 flow [2024-11-09 02:51:28,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:28,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:28,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:28,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:51:28,071 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:28,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash 433127114, now seen corresponding path program 1 times [2024-11-09 02:51:28,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268159503] [2024-11-09 02:51:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:28,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268159503] [2024-11-09 02:51:28,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268159503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:28,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:28,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413283124] [2024-11-09 02:51:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:28,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:28,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:51:28,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-09 02:51:28,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 147 transitions, 1597 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:28,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:28,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-09 02:51:28,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:31,770 INFO L124 PetriNetUnfolderBase]: 27014/40006 cut-off events. [2024-11-09 02:51:31,770 INFO L125 PetriNetUnfolderBase]: For 124044/126766 co-relation queries the response was YES. [2024-11-09 02:51:31,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156596 conditions, 40006 events. 27014/40006 cut-off events. For 124044/126766 co-relation queries the response was YES. Maximal size of possible extension queue 2739. Compared 299698 event pairs, 5702 based on Foata normal form. 1684/39976 useless extension candidates. Maximal degree in co-relation 131307. Up to 29975 conditions per place. [2024-11-09 02:51:32,042 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 183 selfloop transitions, 107 changer transitions 0/322 dead transitions. [2024-11-09 02:51:32,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 322 transitions, 3984 flow [2024-11-09 02:51:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-11-09 02:51:32,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-11-09 02:51:32,044 INFO L175 Difference]: Start difference. First operand has 89 places, 147 transitions, 1597 flow. Second operand 6 states and 187 transitions. [2024-11-09 02:51:32,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 322 transitions, 3984 flow [2024-11-09 02:51:32,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 322 transitions, 3824 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:32,402 INFO L231 Difference]: Finished difference. Result has 94 places, 221 transitions, 2992 flow [2024-11-09 02:51:32,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2992, PETRI_PLACES=94, PETRI_TRANSITIONS=221} [2024-11-09 02:51:32,402 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2024-11-09 02:51:32,403 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 221 transitions, 2992 flow [2024-11-09 02:51:32,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:32,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:32,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:32,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:51:32,403 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:32,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:32,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1508652806, now seen corresponding path program 6 times [2024-11-09 02:51:32,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:32,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709027624] [2024-11-09 02:51:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:32,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:32,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:32,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709027624] [2024-11-09 02:51:32,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709027624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783759627] [2024-11-09 02:51:32,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:51:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:32,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:32,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:51:32,622 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:51:32,622 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:32,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:51:32,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:32,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:32,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783759627] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:32,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:51:32,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2024-11-09 02:51:32,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29652394] [2024-11-09 02:51:32,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:32,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:51:32,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:32,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:51:32,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:51:32,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-09 02:51:32,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 221 transitions, 2992 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:32,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:32,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-09 02:51:32,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:38,332 INFO L124 PetriNetUnfolderBase]: 39232/56165 cut-off events. [2024-11-09 02:51:38,333 INFO L125 PetriNetUnfolderBase]: For 215361/219231 co-relation queries the response was YES. [2024-11-09 02:51:38,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240336 conditions, 56165 events. 39232/56165 cut-off events. For 215361/219231 co-relation queries the response was YES. Maximal size of possible extension queue 3504. Compared 413672 event pairs, 3720 based on Foata normal form. 2950/57449 useless extension candidates. Maximal degree in co-relation 178359. Up to 17337 conditions per place. [2024-11-09 02:51:39,050 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 212 selfloop transitions, 194 changer transitions 0/422 dead transitions. [2024-11-09 02:51:39,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 422 transitions, 5663 flow [2024-11-09 02:51:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:51:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:51:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-11-09 02:51:39,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-09 02:51:39,051 INFO L175 Difference]: Start difference. First operand has 94 places, 221 transitions, 2992 flow. Second operand 7 states and 220 transitions. [2024-11-09 02:51:39,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 422 transitions, 5663 flow [2024-11-09 02:51:39,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 422 transitions, 5490 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:39,991 INFO L231 Difference]: Finished difference. Result has 104 places, 284 transitions, 4467 flow [2024-11-09 02:51:39,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4467, PETRI_PLACES=104, PETRI_TRANSITIONS=284} [2024-11-09 02:51:39,992 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 56 predicate places. [2024-11-09 02:51:39,992 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 284 transitions, 4467 flow [2024-11-09 02:51:39,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:39,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:39,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:40,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:51:40,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:40,193 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:40,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -230676976, now seen corresponding path program 7 times [2024-11-09 02:51:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453086811] [2024-11-09 02:51:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453086811] [2024-11-09 02:51:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453086811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:40,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:51:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526839403] [2024-11-09 02:51:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:40,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:51:40,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-11-09 02:51:40,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 284 transitions, 4467 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:40,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:40,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-11-09 02:51:40,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:47,407 INFO L124 PetriNetUnfolderBase]: 41594/63338 cut-off events. [2024-11-09 02:51:47,408 INFO L125 PetriNetUnfolderBase]: For 403723/412131 co-relation queries the response was YES. [2024-11-09 02:51:47,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298077 conditions, 63338 events. 41594/63338 cut-off events. For 403723/412131 co-relation queries the response was YES. Maximal size of possible extension queue 4066. Compared 519770 event pairs, 10162 based on Foata normal form. 6401/68194 useless extension candidates. Maximal degree in co-relation 259678. Up to 46196 conditions per place. [2024-11-09 02:51:48,161 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 248 selfloop transitions, 213 changer transitions 0/497 dead transitions. [2024-11-09 02:51:48,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 497 transitions, 8270 flow [2024-11-09 02:51:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:51:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:51:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-11-09 02:51:48,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7077922077922078 [2024-11-09 02:51:48,163 INFO L175 Difference]: Start difference. First operand has 104 places, 284 transitions, 4467 flow. Second operand 7 states and 218 transitions. [2024-11-09 02:51:48,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 497 transitions, 8270 flow [2024-11-09 02:51:49,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 497 transitions, 8196 flow, removed 37 selfloop flow, removed 0 redundant places. [2024-11-09 02:51:49,850 INFO L231 Difference]: Finished difference. Result has 114 places, 391 transitions, 7141 flow [2024-11-09 02:51:49,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7141, PETRI_PLACES=114, PETRI_TRANSITIONS=391} [2024-11-09 02:51:49,850 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 66 predicate places. [2024-11-09 02:51:49,850 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 391 transitions, 7141 flow [2024-11-09 02:51:49,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:49,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:49,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:49,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:51:49,851 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:51:49,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1507855146, now seen corresponding path program 8 times [2024-11-09 02:51:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143133141] [2024-11-09 02:51:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:49,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:50,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143133141] [2024-11-09 02:51:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143133141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:50,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:50,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:51:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263018064] [2024-11-09 02:51:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:50,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:51:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:51:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:51:50,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-09 02:51:50,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 391 transitions, 7141 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:51:50,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:50,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-09 02:51:50,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:52:00,523 INFO L124 PetriNetUnfolderBase]: 59116/86242 cut-off events. [2024-11-09 02:52:00,524 INFO L125 PetriNetUnfolderBase]: For 539842/539873 co-relation queries the response was YES. [2024-11-09 02:52:01,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417205 conditions, 86242 events. 59116/86242 cut-off events. For 539842/539873 co-relation queries the response was YES. Maximal size of possible extension queue 4795. Compared 665008 event pairs, 16707 based on Foata normal form. 111/86255 useless extension candidates. Maximal degree in co-relation 375971. Up to 75893 conditions per place. [2024-11-09 02:52:01,394 INFO L140 encePairwiseOnDemand]: 27/44 looper letters, 247 selfloop transitions, 496 changer transitions 4/754 dead transitions. [2024-11-09 02:52:01,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 754 transitions, 14321 flow [2024-11-09 02:52:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:52:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:52:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2024-11-09 02:52:01,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-11-09 02:52:01,399 INFO L175 Difference]: Start difference. First operand has 114 places, 391 transitions, 7141 flow. Second operand 10 states and 272 transitions. [2024-11-09 02:52:01,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 754 transitions, 14321 flow [2024-11-09 02:52:05,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 754 transitions, 13938 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:52:05,046 INFO L231 Difference]: Finished difference. Result has 128 places, 635 transitions, 13049 flow [2024-11-09 02:52:05,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6925, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13049, PETRI_PLACES=128, PETRI_TRANSITIONS=635} [2024-11-09 02:52:05,047 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 80 predicate places. [2024-11-09 02:52:05,047 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 635 transitions, 13049 flow [2024-11-09 02:52:05,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:05,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:52:05,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:52:05,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:52:05,048 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:52:05,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:52:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash 611125470, now seen corresponding path program 9 times [2024-11-09 02:52:05,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:52:05,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981318049] [2024-11-09 02:52:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:52:05,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:52:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:52:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:52:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:52:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981318049] [2024-11-09 02:52:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981318049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:52:05,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:52:05,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:52:05,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847066880] [2024-11-09 02:52:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:52:05,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:52:05,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:52:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:52:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:52:05,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-11-09 02:52:05,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 635 transitions, 13049 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:52:05,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:52:05,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-11-09 02:52:05,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand