./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.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 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:11:08,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:11:08,366 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:11:08,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:11:08,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:11:08,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:11:08,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:11:08,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:11:08,402 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:11:08,403 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:11:08,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:11:08,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:11:08,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:11:08,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:11:08,406 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:11:08,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:11:08,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:11:08,410 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:11:08,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:11:08,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:11:08,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:11:08,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:11:08,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:11:08,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:11:08,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:11:08,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:11:08,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:11:08,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:11:08,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:11:08,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:11:08,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:11:08,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:11:08,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:11:08,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:11:08,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:11:08,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:11:08,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:11:08,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:11:08,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:11:08,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:11:08,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:11:08,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:11:08,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-10-13 07:11:08,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:11:08,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:11:08,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:11:08,697 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:11:08,697 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:11:08,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-10-13 07:11:10,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:11:10,279 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:11:10,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-10-13 07:11:10,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888d59256/2d45323c495f46ca85bae251e3eae4ca/FLAG5c6596b43 [2024-10-13 07:11:10,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888d59256/2d45323c495f46ca85bae251e3eae4ca [2024-10-13 07:11:10,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:11:10,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:11:10,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:11:10,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:11:10,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:11:10,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454daad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10, skipping insertion in model container [2024-10-13 07:11:10,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,346 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:11:10,581 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2024-10-13 07:11:10,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:11:10,611 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:11:10,636 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2024-10-13 07:11:10,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:11:10,656 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:11:10,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10 WrapperNode [2024-10-13 07:11:10,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:11:10,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:11:10,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:11:10,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:11:10,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,714 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 337 [2024-10-13 07:11:10,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:11:10,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:11:10,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:11:10,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:11:10,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,762 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-13 07:11:10,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,792 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:11:10,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:11:10,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:11:10,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:11:10,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (1/1) ... [2024-10-13 07:11:10,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:11:10,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:10,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:11:10,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:11:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:11:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:11:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:11:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:11:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:11:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:11:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:11:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:11:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:11:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:11:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:11:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:11:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:11:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:11:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:11:10,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:11:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:11:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:11:10,905 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:11:11,012 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:11:11,014 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:11:11,486 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:11:11,487 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:11:11,851 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:11:11,852 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 07:11:11,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:11 BoogieIcfgContainer [2024-10-13 07:11:11,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:11:11,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:11:11,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:11:11,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:11:11,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:11:10" (1/3) ... [2024-10-13 07:11:11,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb96a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:11, skipping insertion in model container [2024-10-13 07:11:11,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:10" (2/3) ... [2024-10-13 07:11:11,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb96a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:11, skipping insertion in model container [2024-10-13 07:11:11,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:11" (3/3) ... [2024-10-13 07:11:11,862 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-10-13 07:11:11,880 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:11:11,881 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:11:11,881 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:11:11,944 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 07:11:11,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 117 flow [2024-10-13 07:11:12,021 INFO L124 PetriNetUnfolderBase]: 9/45 cut-off events. [2024-10-13 07:11:12,022 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:11:12,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 9/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-13 07:11:12,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 48 transitions, 117 flow [2024-10-13 07:11:12,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 106 flow [2024-10-13 07:11:12,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:11:12,052 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;@45c4da46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:11:12,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 07:11:12,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:11:12,069 INFO L124 PetriNetUnfolderBase]: 9/43 cut-off events. [2024-10-13 07:11:12,069 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:11:12,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:12,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:12,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:12,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -102076622, now seen corresponding path program 1 times [2024-10-13 07:11:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:12,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637029797] [2024-10-13 07:11:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:12,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:12,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637029797] [2024-10-13 07:11:12,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637029797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:12,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:12,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:11:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799948778] [2024-10-13 07:11:12,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:12,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 07:11:12,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:12,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 07:11:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 07:11:12,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:12,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:12,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:12,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:12,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:12,999 INFO L124 PetriNetUnfolderBase]: 2548/3637 cut-off events. [2024-10-13 07:11:13,000 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-10-13 07:11:13,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 3637 events. 2548/3637 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16610 event pairs, 2146 based on Foata normal form. 0/3229 useless extension candidates. Maximal degree in co-relation 7063. Up to 3626 conditions per place. [2024-10-13 07:11:13,030 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 37 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2024-10-13 07:11:13,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 174 flow [2024-10-13 07:11:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 07:11:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 07:11:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-10-13 07:11:13,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-13 07:11:13,044 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 2 states and 54 transitions. [2024-10-13 07:11:13,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 174 flow [2024-10-13 07:11:13,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 07:11:13,053 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 88 flow [2024-10-13 07:11:13,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2024-10-13 07:11:13,062 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2024-10-13 07:11:13,062 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 88 flow [2024-10-13 07:11:13,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:13,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:13,063 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] [2024-10-13 07:11:13,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:11:13,063 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:13,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash 665032564, now seen corresponding path program 1 times [2024-10-13 07:11:13,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:13,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230227114] [2024-10-13 07:11:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:13,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:13,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230227114] [2024-10-13 07:11:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230227114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:13,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:11:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370475994] [2024-10-13 07:11:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:13,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:11:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:11:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:11:13,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:13,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:13,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:13,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:13,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:14,025 INFO L124 PetriNetUnfolderBase]: 3499/4990 cut-off events. [2024-10-13 07:11:14,026 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-10-13 07:11:14,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 4990 events. 3499/4990 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25016 event pairs, 876 based on Foata normal form. 1/4374 useless extension candidates. Maximal degree in co-relation 10069. Up to 3852 conditions per place. [2024-10-13 07:11:14,051 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 56 selfloop transitions, 4 changer transitions 1/65 dead transitions. [2024-10-13 07:11:14,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 263 flow [2024-10-13 07:11:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:11:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:11:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-10-13 07:11:14,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-10-13 07:11:14,055 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 3 states and 83 transitions. [2024-10-13 07:11:14,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 263 flow [2024-10-13 07:11:14,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:11:14,060 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 114 flow [2024-10-13 07:11:14,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-10-13 07:11:14,062 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2024-10-13 07:11:14,063 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 114 flow [2024-10-13 07:11:14,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:14,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:14,063 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:14,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:11:14,064 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:14,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash -886347784, now seen corresponding path program 1 times [2024-10-13 07:11:14,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:14,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025608465] [2024-10-13 07:11:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:14,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:14,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025608465] [2024-10-13 07:11:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025608465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:14,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:14,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:11:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538488250] [2024-10-13 07:11:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:14,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:11:14,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:14,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:11:14,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:11:14,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:14,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:14,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:14,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:14,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:14,833 INFO L124 PetriNetUnfolderBase]: 4888/7036 cut-off events. [2024-10-13 07:11:14,833 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-10-13 07:11:14,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15083 conditions, 7036 events. 4888/7036 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 35526 event pairs, 2384 based on Foata normal form. 165/6301 useless extension candidates. Maximal degree in co-relation 15078. Up to 3648 conditions per place. [2024-10-13 07:11:14,871 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 65 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-10-13 07:11:14,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 310 flow [2024-10-13 07:11:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:11:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:11:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-13 07:11:14,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-13 07:11:14,875 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 114 flow. Second operand 3 states and 87 transitions. [2024-10-13 07:11:14,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 310 flow [2024-10-13 07:11:14,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:14,878 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 118 flow [2024-10-13 07:11:14,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-10-13 07:11:14,880 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-10-13 07:11:14,880 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 118 flow [2024-10-13 07:11:14,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:14,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:14,881 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:14,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:11:14,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:14,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1401038186, now seen corresponding path program 1 times [2024-10-13 07:11:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:14,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041053500] [2024-10-13 07:11:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:15,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:15,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041053500] [2024-10-13 07:11:15,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041053500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:15,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:15,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:11:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282819685] [2024-10-13 07:11:15,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:15,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:11:15,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:11:15,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:11:15,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:15,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:15,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:15,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:15,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:15,614 INFO L124 PetriNetUnfolderBase]: 3703/5358 cut-off events. [2024-10-13 07:11:15,616 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-10-13 07:11:15,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 5358 events. 3703/5358 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25780 event pairs, 1275 based on Foata normal form. 90/4779 useless extension candidates. Maximal degree in co-relation 11727. Up to 4000 conditions per place. [2024-10-13 07:11:15,653 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 54 selfloop transitions, 2 changer transitions 5/65 dead transitions. [2024-10-13 07:11:15,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 285 flow [2024-10-13 07:11:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:11:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:11:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-13 07:11:15,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-13 07:11:15,657 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 118 flow. Second operand 3 states and 82 transitions. [2024-10-13 07:11:15,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 285 flow [2024-10-13 07:11:15,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:15,660 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 124 flow [2024-10-13 07:11:15,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-13 07:11:15,662 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-13 07:11:15,663 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 124 flow [2024-10-13 07:11:15,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:15,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:15,663 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:15,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:11:15,664 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:15,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:15,664 INFO L85 PathProgramCache]: Analyzing trace with hash -664395841, now seen corresponding path program 1 times [2024-10-13 07:11:15,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:15,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289894967] [2024-10-13 07:11:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:15,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289894967] [2024-10-13 07:11:15,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289894967] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:15,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:11:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592855905] [2024-10-13 07:11:15,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:15,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:11:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:11:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:11:15,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:15,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:15,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:15,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:15,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:16,111 INFO L124 PetriNetUnfolderBase]: 2561/3734 cut-off events. [2024-10-13 07:11:16,111 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2024-10-13 07:11:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8246 conditions, 3734 events. 2561/3734 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16251 event pairs, 1346 based on Foata normal form. 62/3266 useless extension candidates. Maximal degree in co-relation 8239. Up to 2767 conditions per place. [2024-10-13 07:11:16,131 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 7/61 dead transitions. [2024-10-13 07:11:16,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 275 flow [2024-10-13 07:11:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:11:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:11:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-10-13 07:11:16,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-10-13 07:11:16,134 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 124 flow. Second operand 3 states and 76 transitions. [2024-10-13 07:11:16,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 275 flow [2024-10-13 07:11:16,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:16,136 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 134 flow [2024-10-13 07:11:16,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-13 07:11:16,137 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-10-13 07:11:16,137 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 134 flow [2024-10-13 07:11:16,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:16,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:16,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:16,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:11:16,138 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:16,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash -802486131, now seen corresponding path program 1 times [2024-10-13 07:11:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927560935] [2024-10-13 07:11:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:16,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:16,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:16,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927560935] [2024-10-13 07:11:16,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927560935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:16,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:16,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:11:16,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379581795] [2024-10-13 07:11:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:16,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:11:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:11:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:11:16,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:16,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:16,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:16,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:16,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:16,739 INFO L124 PetriNetUnfolderBase]: 3173/4706 cut-off events. [2024-10-13 07:11:16,740 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-10-13 07:11:16,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10442 conditions, 4706 events. 3173/4706 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22250 event pairs, 2856 based on Foata normal form. 56/4044 useless extension candidates. Maximal degree in co-relation 10434. Up to 3723 conditions per place. [2024-10-13 07:11:16,762 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 40 selfloop transitions, 2 changer transitions 30/76 dead transitions. [2024-10-13 07:11:16,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 346 flow [2024-10-13 07:11:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:11:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:11:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-13 07:11:16,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-10-13 07:11:16,764 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 134 flow. Second operand 5 states and 104 transitions. [2024-10-13 07:11:16,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 346 flow [2024-10-13 07:11:16,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:11:16,766 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 154 flow [2024-10-13 07:11:16,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-10-13 07:11:16,767 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-10-13 07:11:16,767 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 154 flow [2024-10-13 07:11:16,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:16,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:16,768 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:16,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:11:16,768 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:16,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1658302438, now seen corresponding path program 1 times [2024-10-13 07:11:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806896672] [2024-10-13 07:11:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:11:16,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:16,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806896672] [2024-10-13 07:11:16,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806896672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:16,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:16,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:11:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179030733] [2024-10-13 07:11:16,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:16,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:11:16,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:11:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:11:16,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:16,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:16,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:16,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:17,396 INFO L124 PetriNetUnfolderBase]: 3336/4961 cut-off events. [2024-10-13 07:11:17,396 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2024-10-13 07:11:17,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11118 conditions, 4961 events. 3336/4961 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23602 event pairs, 3018 based on Foata normal form. 14/4235 useless extension candidates. Maximal degree in co-relation 11107. Up to 3721 conditions per place. [2024-10-13 07:11:17,419 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 40 selfloop transitions, 3 changer transitions 30/77 dead transitions. [2024-10-13 07:11:17,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 390 flow [2024-10-13 07:11:17,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:11:17,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:11:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-10-13 07:11:17,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-10-13 07:11:17,421 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 154 flow. Second operand 4 states and 97 transitions. [2024-10-13 07:11:17,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 390 flow [2024-10-13 07:11:17,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 366 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-13 07:11:17,427 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 158 flow [2024-10-13 07:11:17,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-10-13 07:11:17,428 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-10-13 07:11:17,428 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 158 flow [2024-10-13 07:11:17,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:17,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:17,429 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:17,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:11:17,429 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:17,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2115243705, now seen corresponding path program 1 times [2024-10-13 07:11:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565202294] [2024-10-13 07:11:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:17,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:11:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565202294] [2024-10-13 07:11:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565202294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:17,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:11:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:11:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570497412] [2024-10-13 07:11:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:17,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:11:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:11:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:11:17,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:17,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:17,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:17,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:17,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:18,187 INFO L124 PetriNetUnfolderBase]: 3297/4894 cut-off events. [2024-10-13 07:11:18,187 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2024-10-13 07:11:18,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10865 conditions, 4894 events. 3297/4894 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23330 event pairs, 2984 based on Foata normal form. 10/4168 useless extension candidates. Maximal degree in co-relation 10854. Up to 3719 conditions per place. [2024-10-13 07:11:18,214 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 24/72 dead transitions. [2024-10-13 07:11:18,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 356 flow [2024-10-13 07:11:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:11:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:11:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-13 07:11:18,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-10-13 07:11:18,217 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 158 flow. Second operand 4 states and 91 transitions. [2024-10-13 07:11:18,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 356 flow [2024-10-13 07:11:18,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 07:11:18,221 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 166 flow [2024-10-13 07:11:18,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-10-13 07:11:18,222 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-13 07:11:18,222 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 166 flow [2024-10-13 07:11:18,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:18,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:18,223 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:18,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 07:11:18,223 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:18,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1670686615, now seen corresponding path program 1 times [2024-10-13 07:11:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:18,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255583695] [2024-10-13 07:11:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:11:18,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255583695] [2024-10-13 07:11:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255583695] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:11:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889625289] [2024-10-13 07:11:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:18,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:18,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:18,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:11:18,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:11:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:18,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:11:18,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:11:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:11:18,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:11:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889625289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:11:18,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:11:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 07:11:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430167098] [2024-10-13 07:11:18,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:11:18,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:11:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:11:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:11:18,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:18,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:18,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:18,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:18,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:19,427 INFO L124 PetriNetUnfolderBase]: 5255/7615 cut-off events. [2024-10-13 07:11:19,427 INFO L125 PetriNetUnfolderBase]: For 2102/2102 co-relation queries the response was YES. [2024-10-13 07:11:19,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 7615 events. 5255/7615 cut-off events. For 2102/2102 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 35172 event pairs, 2749 based on Foata normal form. 156/6710 useless extension candidates. Maximal degree in co-relation 17538. Up to 2981 conditions per place. [2024-10-13 07:11:19,477 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 85 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-10-13 07:11:19,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 498 flow [2024-10-13 07:11:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:11:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:11:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-10-13 07:11:19,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-10-13 07:11:19,479 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 166 flow. Second operand 4 states and 115 transitions. [2024-10-13 07:11:19,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 498 flow [2024-10-13 07:11:19,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 488 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 07:11:19,484 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 219 flow [2024-10-13 07:11:19,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-13 07:11:19,485 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-10-13 07:11:19,486 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 219 flow [2024-10-13 07:11:19,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:19,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:19,486 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:19,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 07:11:19,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:19,688 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:19,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash -695731987, now seen corresponding path program 1 times [2024-10-13 07:11:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:19,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547910727] [2024-10-13 07:11:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:11:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:19,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547910727] [2024-10-13 07:11:19,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547910727] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:11:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75158610] [2024-10-13 07:11:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:19,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:19,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:19,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:11:19,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:11:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:20,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:11:20,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:11:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:11:20,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:11:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:11:20,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75158610] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:11:20,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:11:20,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 07:11:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647259823] [2024-10-13 07:11:20,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:11:20,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:11:20,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:11:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:11:20,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:20,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:20,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:20,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:20,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:21,115 INFO L124 PetriNetUnfolderBase]: 6007/8805 cut-off events. [2024-10-13 07:11:21,115 INFO L125 PetriNetUnfolderBase]: For 4179/4179 co-relation queries the response was YES. [2024-10-13 07:11:21,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21967 conditions, 8805 events. 6007/8805 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 42986 event pairs, 5125 based on Foata normal form. 2/7537 useless extension candidates. Maximal degree in co-relation 21954. Up to 7601 conditions per place. [2024-10-13 07:11:21,176 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 48 selfloop transitions, 3 changer transitions 43/98 dead transitions. [2024-10-13 07:11:21,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 539 flow [2024-10-13 07:11:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:11:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:11:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-10-13 07:11:21,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-10-13 07:11:21,178 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 219 flow. Second operand 7 states and 130 transitions. [2024-10-13 07:11:21,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 539 flow [2024-10-13 07:11:21,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 531 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-13 07:11:21,187 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 235 flow [2024-10-13 07:11:21,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-10-13 07:11:21,188 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-10-13 07:11:21,188 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 235 flow [2024-10-13 07:11:21,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:21,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:21,189 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:21,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 07:11:21,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 07:11:21,393 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:21,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash 231276410, now seen corresponding path program 2 times [2024-10-13 07:11:21,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:21,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977880151] [2024-10-13 07:11:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:11:21,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:21,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977880151] [2024-10-13 07:11:21,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977880151] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:11:21,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474732993] [2024-10-13 07:11:21,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:11:21,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:21,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:21,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:11:21,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:11:21,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:11:21,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:11:21,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:11:21,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:11:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:11:21,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:11:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:11:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474732993] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:11:22,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:11:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-13 07:11:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928255284] [2024-10-13 07:11:22,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:11:22,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:11:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:11:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:11:22,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:22,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 235 flow. Second operand has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:22,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:22,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:22,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:11:23,370 INFO L124 PetriNetUnfolderBase]: 6488/9654 cut-off events. [2024-10-13 07:11:23,371 INFO L125 PetriNetUnfolderBase]: For 5770/5770 co-relation queries the response was YES. [2024-10-13 07:11:23,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24156 conditions, 9654 events. 6488/9654 cut-off events. For 5770/5770 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 48938 event pairs, 5339 based on Foata normal form. 345/8634 useless extension candidates. Maximal degree in co-relation 24138. Up to 7598 conditions per place. [2024-10-13 07:11:23,426 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 46 selfloop transitions, 6 changer transitions 55/111 dead transitions. [2024-10-13 07:11:23,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 111 transitions, 659 flow [2024-10-13 07:11:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:11:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:11:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-10-13 07:11:23,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-10-13 07:11:23,428 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 235 flow. Second operand 9 states and 153 transitions. [2024-10-13 07:11:23,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 111 transitions, 659 flow [2024-10-13 07:11:23,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 111 transitions, 637 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-13 07:11:23,443 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 249 flow [2024-10-13 07:11:23,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=249, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-13 07:11:23,444 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-10-13 07:11:23,444 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 249 flow [2024-10-13 07:11:23,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:23,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:11:23,445 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:11:23,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 07:11:23,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:23,647 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:11:23,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:11:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash 906033355, now seen corresponding path program 3 times [2024-10-13 07:11:23,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:11:23,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873998956] [2024-10-13 07:11:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:11:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:11:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:11:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:11:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873998956] [2024-10-13 07:11:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873998956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:11:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328215256] [2024-10-13 07:11:28,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:11:28,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:11:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:11:28,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:11:28,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:11:28,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:11:28,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:11:28,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-10-13 07:11:28,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:11:28,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 07:11:28,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 07:11:28,458 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-13 07:11:28,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-13 07:11:28,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-13 07:11:28,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-13 07:11:28,705 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 07:11:28,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 07:11:28,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 07:11:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:30,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:11:41,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:11:41,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 84 [2024-10-13 07:11:41,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:11:41,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2541 treesize of output 2343 [2024-10-13 07:11:41,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:11:41,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1377 treesize of output 1180 [2024-10-13 07:11:42,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-13 07:11:42,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:11:42,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 239 treesize of output 131 [2024-10-13 07:11:42,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:11:42,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3326 treesize of output 3084 [2024-10-13 07:11:42,789 INFO L349 Elim1Store]: treesize reduction 15, result has 73.2 percent of original size [2024-10-13 07:11:42,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1720 treesize of output 1466 [2024-10-13 07:11:45,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-13 07:11:45,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 07:11:46,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-10-13 07:11:46,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-13 07:11:46,399 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-13 07:11:46,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 380 treesize of output 314 [2024-10-13 07:11:46,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:11:46,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 337 treesize of output 181 [2024-10-13 07:11:46,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:11:46,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3716 treesize of output 3446 [2024-10-13 07:11:46,672 INFO L349 Elim1Store]: treesize reduction 23, result has 73.6 percent of original size [2024-10-13 07:11:46,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2148 treesize of output 1833 [2024-10-13 07:11:55,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-13 07:11:55,416 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,442 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,452 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,485 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,497 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,563 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,595 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,623 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,681 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,688 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,700 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:55,708 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-13 07:11:56,515 INFO L349 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2024-10-13 07:11:56,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 531 treesize of output 419 [2024-10-13 07:11:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:11:57,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328215256] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:11:57,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:11:57,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 56 [2024-10-13 07:11:57,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156616769] [2024-10-13 07:11:57,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:11:57,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-13 07:11:57,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:11:57,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-13 07:11:57,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2759, Unknown=2, NotChecked=0, Total=3192 [2024-10-13 07:11:57,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-13 07:11:57,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 249 flow. Second operand has 57 states, 57 states have (on average 9.210526315789474) internal successors, (525), 57 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:11:57,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:11:57,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-13 07:11:57,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:10,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:12:14,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:12:15,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:12:19,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:12:30,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]