./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-max-array.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 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:47:45,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:47:45,711 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:47:45,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:47:45,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:47:45,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:47:45,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:47:45,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:47:45,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:47:45,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:47:45,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:47:45,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:47:45,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:47:45,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:47:45,755 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:47:45,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:47:45,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:47:45,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:47:45,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:47:45,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:47:45,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:47:45,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:47:45,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:47:45,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:47:45,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:47:45,765 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:47:45,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:47:45,765 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:47:45,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:47:45,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:47:45,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:47:45,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:47:45,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:47:45,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:47:45,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:47:45,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:47:45,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:47:45,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:47:45,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:47:45,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:47:45,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:47:45,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:47:45,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2024-11-09 02:47:46,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:47:46,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:47:46,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:47:46,023 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:47:46,023 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:47:46,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2024-11-09 02:47:47,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:47:47,584 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:47:47,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2024-11-09 02:47:47,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77da945b0/280c3a7d4ef84446925f8edb02b00eff/FLAG6e98625da [2024-11-09 02:47:47,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77da945b0/280c3a7d4ef84446925f8edb02b00eff [2024-11-09 02:47:47,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:47:47,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:47:47,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:47:47,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:47:47,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:47:47,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30eef465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47, skipping insertion in model container [2024-11-09 02:47:47,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:47:47,834 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2592,2605] [2024-11-09 02:47:47,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:47:47,848 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:47:47,862 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2592,2605] [2024-11-09 02:47:47,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:47:47,879 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:47:47,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47 WrapperNode [2024-11-09 02:47:47,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:47:47,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:47:47,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:47:47,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:47:47,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,911 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-09 02:47:47,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:47:47,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:47:47,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:47:47,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:47:47,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,961 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 02:47:47,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:47,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:47:48,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:47:48,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:47:48,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:47:48,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (1/1) ... [2024-11-09 02:47:48,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:47:48,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:48,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:47:48,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:47:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:47:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:47:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:47:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:47:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:47:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:47:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:47:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:47:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:47:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:47:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:47:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:47:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:47:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:47:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:47:48,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:47:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:47:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:47:48,087 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:47:48,196 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:47:48,198 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:47:48,421 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:47:48,422 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:47:48,560 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:47:48,560 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:47:48,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:47:48 BoogieIcfgContainer [2024-11-09 02:47:48,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:47:48,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:47:48,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:47:48,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:47:48,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:47:47" (1/3) ... [2024-11-09 02:47:48,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad8fb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:47:48, skipping insertion in model container [2024-11-09 02:47:48,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:47" (2/3) ... [2024-11-09 02:47:48,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad8fb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:47:48, skipping insertion in model container [2024-11-09 02:47:48,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:47:48" (3/3) ... [2024-11-09 02:47:48,571 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2024-11-09 02:47:48,584 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:47:48,585 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:47:48,585 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:47:48,630 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:47:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-09 02:47:48,678 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-09 02:47:48,679 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:47:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-09 02:47:48,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-09 02:47:48,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-09 02:47:48,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:47:48,700 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;@64aa8d16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:47:48,700 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:47:48,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:47:48,710 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-09 02:47:48,710 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:47:48,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:48,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:48,711 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:47:48,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash 261283878, now seen corresponding path program 1 times [2024-11-09 02:47:48,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:48,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593591412] [2024-11-09 02:47:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:48,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593591412] [2024-11-09 02:47:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593591412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:47:49,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539342608] [2024-11-09 02:47:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:49,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:47:49,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:49,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:47:49,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:47:49,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-09 02:47:49,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:49,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:49,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-09 02:47:49,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:49,281 INFO L124 PetriNetUnfolderBase]: 617/945 cut-off events. [2024-11-09 02:47:49,282 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-09 02:47:49,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 945 events. 617/945 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3706 event pairs, 126 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 1706. Up to 677 conditions per place. [2024-11-09 02:47:49,292 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-09 02:47:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-09 02:47:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:47:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:47:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-09 02:47:49,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-09 02:47:49,311 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-09 02:47:49,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-09 02:47:49,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:47:49,318 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-09 02:47:49,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-09 02:47:49,323 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-09 02:47:49,323 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-09 02:47:49,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:49,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:49,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:49,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:47:49,325 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:47:49,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:49,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1254734667, now seen corresponding path program 1 times [2024-11-09 02:47:49,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:49,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896547476] [2024-11-09 02:47:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:49,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:49,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:49,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896547476] [2024-11-09 02:47:49,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896547476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:49,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:49,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:47:49,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493601911] [2024-11-09 02:47:49,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:49,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:47:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:47:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:47:49,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-09 02:47:49,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:49,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:49,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-09 02:47:49,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:49,645 INFO L124 PetriNetUnfolderBase]: 617/943 cut-off events. [2024-11-09 02:47:49,647 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-11-09 02:47:49,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 943 events. 617/943 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3839 event pairs, 407 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 792. Up to 895 conditions per place. [2024-11-09 02:47:49,655 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-09 02:47:49,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2024-11-09 02:47:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:47:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:47:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-09 02:47:49,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-09 02:47:49,657 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2024-11-09 02:47:49,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2024-11-09 02:47:49,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:49,658 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2024-11-09 02:47:49,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-09 02:47:49,659 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-09 02:47:49,659 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2024-11-09 02:47:49,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:49,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:49,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:49,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:47:49,660 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:47:49,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -788942457, now seen corresponding path program 1 times [2024-11-09 02:47:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983237672] [2024-11-09 02:47:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:49,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:49,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983237672] [2024-11-09 02:47:49,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983237672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:49,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:49,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:47:49,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522562923] [2024-11-09 02:47:49,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:49,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:47:49,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:47:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:47:49,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:47:49,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:49,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:49,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:47:49,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:49,953 INFO L124 PetriNetUnfolderBase]: 790/1161 cut-off events. [2024-11-09 02:47:49,954 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-09 02:47:49,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 1161 events. 790/1161 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4676 event pairs, 246 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2562. Up to 576 conditions per place. [2024-11-09 02:47:49,960 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-09 02:47:49,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2024-11-09 02:47:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:47:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:47:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-09 02:47:49,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-09 02:47:49,963 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2024-11-09 02:47:49,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2024-11-09 02:47:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:49,965 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2024-11-09 02:47:49,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-09 02:47:49,966 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-09 02:47:49,966 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2024-11-09 02:47:49,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:49,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:49,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:49,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:47:49,968 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:47:49,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash 513300121, now seen corresponding path program 1 times [2024-11-09 02:47:49,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:49,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166659567] [2024-11-09 02:47:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166659567] [2024-11-09 02:47:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166659567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:50,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670715780] [2024-11-09 02:47:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:50,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:50,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:47:50,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:47:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:50,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:47:50,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:47:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:50,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:47:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670715780] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:47:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:47:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156402056] [2024-11-09 02:47:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:50,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:47:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:47:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:47:50,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:47:50,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:50,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:50,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:47:50,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:50,457 INFO L124 PetriNetUnfolderBase]: 855/1295 cut-off events. [2024-11-09 02:47:50,458 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2024-11-09 02:47:50,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1295 events. 855/1295 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5390 event pairs, 256 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 3227. Up to 670 conditions per place. [2024-11-09 02:47:50,466 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-11-09 02:47:50,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2024-11-09 02:47:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:47:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:47:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-09 02:47:50,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-09 02:47:50,469 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2024-11-09 02:47:50,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2024-11-09 02:47:50,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:47:50,473 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2024-11-09 02:47:50,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-09 02:47:50,475 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-09 02:47:50,476 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2024-11-09 02:47:50,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:50,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:50,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:50,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:47:50,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:50,678 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:47:50,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:50,679 INFO L85 PathProgramCache]: Analyzing trace with hash -694361008, now seen corresponding path program 1 times [2024-11-09 02:47:50,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:50,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231077033] [2024-11-09 02:47:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:50,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:51,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231077033] [2024-11-09 02:47:51,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231077033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918401906] [2024-11-09 02:47:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:51,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:51,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:51,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:47:51,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:47:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:51,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:47:51,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:47:51,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:47:51,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-09 02:47:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:51,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:47:52,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 85 [2024-11-09 02:47:52,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:47:52,583 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 107 treesize of output 111 [2024-11-09 02:47:53,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2024-11-09 02:47:53,220 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-09 02:47:53,220 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 157 treesize of output 1 [2024-11-09 02:47:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:53,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918401906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:47:53,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:47:53,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-11-09 02:47:53,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908369731] [2024-11-09 02:47:53,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:47:53,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:47:53,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:53,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:47:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:47:53,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:47:53,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 23 states, 23 states have (on average 8.73913043478261) internal successors, (201), 23 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) [2024-11-09 02:47:53,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:53,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:47:53,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:54,832 INFO L124 PetriNetUnfolderBase]: 1841/2761 cut-off events. [2024-11-09 02:47:54,832 INFO L125 PetriNetUnfolderBase]: For 1721/1721 co-relation queries the response was YES. [2024-11-09 02:47:54,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 2761 events. 1841/2761 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12611 event pairs, 106 based on Foata normal form. 1/2760 useless extension candidates. Maximal degree in co-relation 5614. Up to 1375 conditions per place. [2024-11-09 02:47:54,850 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2024-11-09 02:47:54,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2024-11-09 02:47:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:47:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:47:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2024-11-09 02:47:54,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-09 02:47:54,855 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2024-11-09 02:47:54,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2024-11-09 02:47:54,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:47:54,863 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2024-11-09 02:47:54,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2024-11-09 02:47:54,865 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-11-09 02:47:54,865 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2024-11-09 02:47:54,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.73913043478261) internal successors, (201), 23 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) [2024-11-09 02:47:54,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:54,866 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:54,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:47:55,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:55,071 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:47:55,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2045165880, now seen corresponding path program 2 times [2024-11-09 02:47:55,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:55,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182478160] [2024-11-09 02:47:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:55,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:55,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182478160] [2024-11-09 02:47:55,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182478160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:55,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312296865] [2024-11-09 02:47:55,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:47:55,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:55,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:55,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:47:55,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:47:55,567 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:47:55,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:47:55,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:47:55,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:47:55,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:47:55,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-09 02:47:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:55,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:47:56,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2024-11-09 02:47:56,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:47:56,441 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 157 treesize of output 149 [2024-11-09 02:47:57,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 85 [2024-11-09 02:47:57,030 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-09 02:47:57,031 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 107 treesize of output 103 [2024-11-09 02:47:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:57,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312296865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:47:57,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:47:57,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2024-11-09 02:47:57,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482097990] [2024-11-09 02:47:57,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:47:57,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:47:57,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:57,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:47:57,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:47:57,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-09 02:47:57,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 18 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:57,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:57,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-09 02:47:57,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:58,118 INFO L124 PetriNetUnfolderBase]: 1538/2445 cut-off events. [2024-11-09 02:47:58,118 INFO L125 PetriNetUnfolderBase]: For 3243/3246 co-relation queries the response was YES. [2024-11-09 02:47:58,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 2445 events. 1538/2445 cut-off events. For 3243/3246 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12095 event pairs, 120 based on Foata normal form. 3/2442 useless extension candidates. Maximal degree in co-relation 7434. Up to 1623 conditions per place. [2024-11-09 02:47:58,133 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 49 changer transitions 1/181 dead transitions. [2024-11-09 02:47:58,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 181 transitions, 1211 flow [2024-11-09 02:47:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:47:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:47:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 242 transitions. [2024-11-09 02:47:58,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-09 02:47:58,135 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 15 states and 242 transitions. [2024-11-09 02:47:58,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 181 transitions, 1211 flow [2024-11-09 02:47:58,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 181 transitions, 1093 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-11-09 02:47:58,146 INFO L231 Difference]: Finished difference. Result has 76 places, 111 transitions, 679 flow [2024-11-09 02:47:58,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=679, PETRI_PLACES=76, PETRI_TRANSITIONS=111} [2024-11-09 02:47:58,146 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2024-11-09 02:47:58,147 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 111 transitions, 679 flow [2024-11-09 02:47:58,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 18 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:58,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:58,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:58,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:47:58,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:58,348 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:47:58,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash 402702216, now seen corresponding path program 3 times [2024-11-09 02:47:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:58,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367048879] [2024-11-09 02:47:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:58,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367048879] [2024-11-09 02:47:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367048879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:47:58,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901162386] [2024-11-09 02:47:58,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:47:58,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:47:58,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:58,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:47:58,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:47:58,771 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:47:58,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:47:58,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:47:58,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:47:58,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:47:58,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-09 02:47:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:59,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:47:59,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2024-11-09 02:47:59,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:47:59,594 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 64 treesize of output 58 [2024-11-09 02:47:59,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2024-11-09 02:47:59,636 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 02:47:59,636 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 100 treesize of output 1 [2024-11-09 02:47:59,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2024-11-09 02:47:59,650 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 02:47:59,650 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 83 treesize of output 75 [2024-11-09 02:47:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901162386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:47:59,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:47:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-11-09 02:47:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275668736] [2024-11-09 02:47:59,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:47:59,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:47:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:47:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:47:59,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:47:59,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 111 transitions, 679 flow. Second operand has 23 states, 23 states have (on average 8.826086956521738) internal successors, (203), 23 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:59,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:59,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:47:59,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:01,131 INFO L124 PetriNetUnfolderBase]: 2837/4284 cut-off events. [2024-11-09 02:48:01,131 INFO L125 PetriNetUnfolderBase]: For 4884/4889 co-relation queries the response was YES. [2024-11-09 02:48:01,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13745 conditions, 4284 events. 2837/4284 cut-off events. For 4884/4889 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21825 event pairs, 176 based on Foata normal form. 6/4289 useless extension candidates. Maximal degree in co-relation 12444. Up to 2499 conditions per place. [2024-11-09 02:48:01,154 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 162 selfloop transitions, 89 changer transitions 2/257 dead transitions. [2024-11-09 02:48:01,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 257 transitions, 1757 flow [2024-11-09 02:48:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:48:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:48:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 292 transitions. [2024-11-09 02:48:01,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46570972886762363 [2024-11-09 02:48:01,155 INFO L175 Difference]: Start difference. First operand has 76 places, 111 transitions, 679 flow. Second operand 19 states and 292 transitions. [2024-11-09 02:48:01,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 257 transitions, 1757 flow [2024-11-09 02:48:01,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 257 transitions, 1720 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-09 02:48:01,166 INFO L231 Difference]: Finished difference. Result has 96 places, 156 transitions, 1222 flow [2024-11-09 02:48:01,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1222, PETRI_PLACES=96, PETRI_TRANSITIONS=156} [2024-11-09 02:48:01,167 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 61 predicate places. [2024-11-09 02:48:01,167 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 156 transitions, 1222 flow [2024-11-09 02:48:01,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.826086956521738) internal successors, (203), 23 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:01,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:01,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:01,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:01,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:01,368 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:01,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1642369434, now seen corresponding path program 4 times [2024-11-09 02:48:01,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:01,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156393546] [2024-11-09 02:48:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:01,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:01,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156393546] [2024-11-09 02:48:01,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156393546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:01,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590625137] [2024-11-09 02:48:01,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:48:01,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:01,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:01,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:01,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:48:01,790 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:48:01,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:01,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:48:01,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:01,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:48:01,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-09 02:48:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:02,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:02,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2024-11-09 02:48:02,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:02,570 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 64 treesize of output 58 [2024-11-09 02:48:02,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2024-11-09 02:48:02,609 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 02:48:02,609 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 83 treesize of output 75 [2024-11-09 02:48:02,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2024-11-09 02:48:02,690 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 02:48:02,690 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 100 treesize of output 1 [2024-11-09 02:48:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:02,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590625137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:02,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:02,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-11-09 02:48:02,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016577524] [2024-11-09 02:48:02,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:02,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:48:02,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:02,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:48:02,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:48:02,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:48:02,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 156 transitions, 1222 flow. Second operand has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:02,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:02,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:48:02,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:04,251 INFO L124 PetriNetUnfolderBase]: 3261/4924 cut-off events. [2024-11-09 02:48:04,252 INFO L125 PetriNetUnfolderBase]: For 8671/8677 co-relation queries the response was YES. [2024-11-09 02:48:04,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17806 conditions, 4924 events. 3261/4924 cut-off events. For 8671/8677 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 25588 event pairs, 214 based on Foata normal form. 6/4928 useless extension candidates. Maximal degree in co-relation 16282. Up to 1870 conditions per place. [2024-11-09 02:48:04,278 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 140 selfloop transitions, 140 changer transitions 1/285 dead transitions. [2024-11-09 02:48:04,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 285 transitions, 2273 flow [2024-11-09 02:48:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:48:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:48:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 320 transitions. [2024-11-09 02:48:04,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46176046176046176 [2024-11-09 02:48:04,280 INFO L175 Difference]: Start difference. First operand has 96 places, 156 transitions, 1222 flow. Second operand 21 states and 320 transitions. [2024-11-09 02:48:04,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 285 transitions, 2273 flow [2024-11-09 02:48:04,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 285 transitions, 2224 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-09 02:48:04,304 INFO L231 Difference]: Finished difference. Result has 113 places, 180 transitions, 1697 flow [2024-11-09 02:48:04,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1697, PETRI_PLACES=113, PETRI_TRANSITIONS=180} [2024-11-09 02:48:04,305 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2024-11-09 02:48:04,305 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 180 transitions, 1697 flow [2024-11-09 02:48:04,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:04,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:04,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:04,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:48:04,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:04,506 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:04,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1017551748, now seen corresponding path program 5 times [2024-11-09 02:48:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871233924] [2024-11-09 02:48:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:04,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871233924] [2024-11-09 02:48:04,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871233924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130872018] [2024-11-09 02:48:04,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:48:04,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:04,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:04,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:04,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:48:04,929 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:04,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:04,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:48:04,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:04,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:48:05,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2024-11-09 02:48:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:05,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:05,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2024-11-09 02:48:05,915 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:48:05,916 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 83 treesize of output 79 [2024-11-09 02:48:06,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2024-11-09 02:48:06,036 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 02:48:06,036 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 100 treesize of output 1 [2024-11-09 02:48:06,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2024-11-09 02:48:06,045 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 02:48:06,046 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 64 treesize of output 1 [2024-11-09 02:48:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:06,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130872018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:06,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:06,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2024-11-09 02:48:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542168564] [2024-11-09 02:48:06,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:06,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:48:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:48:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:48:06,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:48:06,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 180 transitions, 1697 flow. Second operand has 23 states, 23 states have (on average 8.782608695652174) internal successors, (202), 23 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:06,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:06,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:48:06,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:07,957 INFO L124 PetriNetUnfolderBase]: 3417/5163 cut-off events. [2024-11-09 02:48:07,957 INFO L125 PetriNetUnfolderBase]: For 12834/12840 co-relation queries the response was YES. [2024-11-09 02:48:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20527 conditions, 5163 events. 3417/5163 cut-off events. For 12834/12840 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27094 event pairs, 122 based on Foata normal form. 6/5167 useless extension candidates. Maximal degree in co-relation 18967. Up to 1919 conditions per place. [2024-11-09 02:48:07,989 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 153 selfloop transitions, 157 changer transitions 2/316 dead transitions. [2024-11-09 02:48:07,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 316 transitions, 2825 flow [2024-11-09 02:48:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 02:48:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 02:48:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 348 transitions. [2024-11-09 02:48:07,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2024-11-09 02:48:07,991 INFO L175 Difference]: Start difference. First operand has 113 places, 180 transitions, 1697 flow. Second operand 23 states and 348 transitions. [2024-11-09 02:48:07,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 316 transitions, 2825 flow [2024-11-09 02:48:08,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 316 transitions, 2730 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-11-09 02:48:08,027 INFO L231 Difference]: Finished difference. Result has 128 places, 197 transitions, 2148 flow [2024-11-09 02:48:08,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2148, PETRI_PLACES=128, PETRI_TRANSITIONS=197} [2024-11-09 02:48:08,028 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 93 predicate places. [2024-11-09 02:48:08,028 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 197 transitions, 2148 flow [2024-11-09 02:48:08,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.782608695652174) internal successors, (202), 23 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:08,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:08,028 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] [2024-11-09 02:48:08,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:48:08,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:08,229 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:08,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash 626788902, now seen corresponding path program 6 times [2024-11-09 02:48:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829911643] [2024-11-09 02:48:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:08,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829911643] [2024-11-09 02:48:08,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829911643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:08,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951343180] [2024-11-09 02:48:08,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:48:08,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:08,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:08,305 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:08,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:48:08,372 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:48:08,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:08,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:08,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:08,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951343180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:08,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:08,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:48:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923621222] [2024-11-09 02:48:08,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:08,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:48:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:48:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:48:08,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:48:08,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 197 transitions, 2148 flow. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:08,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:08,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:48:08,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:09,251 INFO L124 PetriNetUnfolderBase]: 4651/6933 cut-off events. [2024-11-09 02:48:09,251 INFO L125 PetriNetUnfolderBase]: For 22999/23074 co-relation queries the response was YES. [2024-11-09 02:48:09,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28841 conditions, 6933 events. 4651/6933 cut-off events. For 22999/23074 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 38459 event pairs, 1357 based on Foata normal form. 70/6997 useless extension candidates. Maximal degree in co-relation 27060. Up to 2591 conditions per place. [2024-11-09 02:48:09,294 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 296 selfloop transitions, 33 changer transitions 0/334 dead transitions. [2024-11-09 02:48:09,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 334 transitions, 3884 flow [2024-11-09 02:48:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:48:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:48:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-11-09 02:48:09,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-11-09 02:48:09,296 INFO L175 Difference]: Start difference. First operand has 128 places, 197 transitions, 2148 flow. Second operand 10 states and 171 transitions. [2024-11-09 02:48:09,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 334 transitions, 3884 flow [2024-11-09 02:48:09,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 334 transitions, 3564 flow, removed 43 selfloop flow, removed 15 redundant places. [2024-11-09 02:48:09,420 INFO L231 Difference]: Finished difference. Result has 125 places, 204 transitions, 2084 flow [2024-11-09 02:48:09,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=125, PETRI_TRANSITIONS=204} [2024-11-09 02:48:09,421 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 90 predicate places. [2024-11-09 02:48:09,421 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 204 transitions, 2084 flow [2024-11-09 02:48:09,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:09,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:09,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:09,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:09,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:09,623 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:09,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash -826341570, now seen corresponding path program 1 times [2024-11-09 02:48:09,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:09,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146395344] [2024-11-09 02:48:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:09,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146395344] [2024-11-09 02:48:09,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146395344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:09,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972485603] [2024-11-09 02:48:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:09,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:09,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:09,730 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:09,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:48:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:09,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:09,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:09,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972485603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:09,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:09,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-09 02:48:09,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204041799] [2024-11-09 02:48:09,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:09,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:48:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:48:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:48:09,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:48:09,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 204 transitions, 2084 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:09,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:09,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:48:09,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:10,528 INFO L124 PetriNetUnfolderBase]: 3277/5230 cut-off events. [2024-11-09 02:48:10,528 INFO L125 PetriNetUnfolderBase]: For 18119/18155 co-relation queries the response was YES. [2024-11-09 02:48:10,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21401 conditions, 5230 events. 3277/5230 cut-off events. For 18119/18155 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 31050 event pairs, 1578 based on Foata normal form. 0/5077 useless extension candidates. Maximal degree in co-relation 20132. Up to 1879 conditions per place. [2024-11-09 02:48:10,558 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 267 selfloop transitions, 6 changer transitions 0/282 dead transitions. [2024-11-09 02:48:10,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 282 transitions, 3444 flow [2024-11-09 02:48:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:48:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:48:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-11-09 02:48:10,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-11-09 02:48:10,562 INFO L175 Difference]: Start difference. First operand has 125 places, 204 transitions, 2084 flow. Second operand 6 states and 98 transitions. [2024-11-09 02:48:10,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 282 transitions, 3444 flow [2024-11-09 02:48:10,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 282 transitions, 3433 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 02:48:10,604 INFO L231 Difference]: Finished difference. Result has 130 places, 152 transitions, 1543 flow [2024-11-09 02:48:10,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1543, PETRI_PLACES=130, PETRI_TRANSITIONS=152} [2024-11-09 02:48:10,605 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 95 predicate places. [2024-11-09 02:48:10,605 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 152 transitions, 1543 flow [2024-11-09 02:48:10,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:10,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:10,605 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] [2024-11-09 02:48:10,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 02:48:10,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 02:48:10,806 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:10,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 585817379, now seen corresponding path program 7 times [2024-11-09 02:48:10,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:10,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996289865] [2024-11-09 02:48:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:10,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:10,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:10,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996289865] [2024-11-09 02:48:10,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996289865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367185741] [2024-11-09 02:48:10,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:48:10,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:10,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:10,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:10,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:48:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:10,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:10,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:10,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367185741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:11,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:11,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:48:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970778400] [2024-11-09 02:48:11,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:11,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:48:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:48:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:48:11,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:48:11,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 152 transitions, 1543 flow. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:11,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:11,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:48:11,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:11,512 INFO L124 PetriNetUnfolderBase]: 3249/5136 cut-off events. [2024-11-09 02:48:11,512 INFO L125 PetriNetUnfolderBase]: For 16742/16875 co-relation queries the response was YES. [2024-11-09 02:48:11,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21538 conditions, 5136 events. 3249/5136 cut-off events. For 16742/16875 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 29172 event pairs, 1536 based on Foata normal form. 206/5336 useless extension candidates. Maximal degree in co-relation 20404. Up to 2027 conditions per place. [2024-11-09 02:48:11,543 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 147 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2024-11-09 02:48:11,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 182 transitions, 2000 flow [2024-11-09 02:48:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:48:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:48:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-11-09 02:48:11,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2024-11-09 02:48:11,547 INFO L175 Difference]: Start difference. First operand has 130 places, 152 transitions, 1543 flow. Second operand 7 states and 115 transitions. [2024-11-09 02:48:11,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 182 transitions, 2000 flow [2024-11-09 02:48:11,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 182 transitions, 1971 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:11,676 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 1371 flow [2024-11-09 02:48:11,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1371, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2024-11-09 02:48:11,678 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 98 predicate places. [2024-11-09 02:48:11,678 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 1371 flow [2024-11-09 02:48:11,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:11,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:11,678 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] [2024-11-09 02:48:11,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 02:48:11,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:11,879 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:11,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:11,879 INFO L85 PathProgramCache]: Analyzing trace with hash -608745787, now seen corresponding path program 8 times [2024-11-09 02:48:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:11,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417034570] [2024-11-09 02:48:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:11,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:11,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:11,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417034570] [2024-11-09 02:48:11,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417034570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:11,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436119057] [2024-11-09 02:48:11,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:11,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:11,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:11,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:11,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:48:12,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:12,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:12,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:48:12,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:12,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:12,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436119057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:12,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:12,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:48:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115465455] [2024-11-09 02:48:12,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:12,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:48:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:48:12,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:48:12,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-09 02:48:12,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 1371 flow. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:12,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:12,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-09 02:48:12,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:12,846 INFO L124 PetriNetUnfolderBase]: 2556/4047 cut-off events. [2024-11-09 02:48:12,847 INFO L125 PetriNetUnfolderBase]: For 16374/16490 co-relation queries the response was YES. [2024-11-09 02:48:12,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17065 conditions, 4047 events. 2556/4047 cut-off events. For 16374/16490 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 22354 event pairs, 1265 based on Foata normal form. 238/4272 useless extension candidates. Maximal degree in co-relation 16206. Up to 1781 conditions per place. [2024-11-09 02:48:12,862 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 3 changer transitions 100/142 dead transitions. [2024-11-09 02:48:12,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 142 transitions, 1682 flow [2024-11-09 02:48:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:48:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:48:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-11-09 02:48:12,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-09 02:48:12,863 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 1371 flow. Second operand 7 states and 110 transitions. [2024-11-09 02:48:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 142 transitions, 1682 flow [2024-11-09 02:48:12,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 142 transitions, 1533 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-09 02:48:12,901 INFO L231 Difference]: Finished difference. Result has 129 places, 42 transitions, 249 flow [2024-11-09 02:48:12,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=129, PETRI_TRANSITIONS=42} [2024-11-09 02:48:12,902 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 94 predicate places. [2024-11-09 02:48:12,902 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 42 transitions, 249 flow [2024-11-09 02:48:12,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:12,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:12,902 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] [2024-11-09 02:48:12,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 02:48:13,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 02:48:13,103 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:13,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2063448147, now seen corresponding path program 9 times [2024-11-09 02:48:13,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:13,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768222009] [2024-11-09 02:48:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768222009] [2024-11-09 02:48:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768222009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768206313] [2024-11-09 02:48:13,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:48:13,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:13,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:13,197 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:13,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:48:13,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:48:13,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:13,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:48:13,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:13,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:48:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768206313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:13,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 02:48:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941483784] [2024-11-09 02:48:13,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:13,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:48:13,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:48:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:48:13,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-09 02:48:13,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 42 transitions, 249 flow. Second operand has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 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) [2024-11-09 02:48:13,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:13,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-09 02:48:13,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:14,155 INFO L124 PetriNetUnfolderBase]: 2782/4050 cut-off events. [2024-11-09 02:48:14,156 INFO L125 PetriNetUnfolderBase]: For 9376/9394 co-relation queries the response was YES. [2024-11-09 02:48:14,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15194 conditions, 4050 events. 2782/4050 cut-off events. For 9376/9394 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19835 event pairs, 703 based on Foata normal form. 18/3815 useless extension candidates. Maximal degree in co-relation 15161. Up to 1597 conditions per place. [2024-11-09 02:48:14,188 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 134 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-11-09 02:48:14,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 1299 flow [2024-11-09 02:48:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:48:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:48:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-11-09 02:48:14,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-11-09 02:48:14,189 INFO L175 Difference]: Start difference. First operand has 129 places, 42 transitions, 249 flow. Second operand 13 states and 177 transitions. [2024-11-09 02:48:14,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 1299 flow [2024-11-09 02:48:14,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1139 flow, removed 56 selfloop flow, removed 19 redundant places. [2024-11-09 02:48:14,211 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 345 flow [2024-11-09 02:48:14,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=345, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-11-09 02:48:14,213 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2024-11-09 02:48:14,213 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 345 flow [2024-11-09 02:48:14,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 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) [2024-11-09 02:48:14,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:14,213 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] [2024-11-09 02:48:14,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:14,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 02:48:14,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:14,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1601612701, now seen corresponding path program 10 times [2024-11-09 02:48:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:14,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561014925] [2024-11-09 02:48:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:14,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:48:14,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:14,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561014925] [2024-11-09 02:48:14,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561014925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:14,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738313329] [2024-11-09 02:48:14,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:48:14,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:14,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:14,536 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:14,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:48:14,608 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:48:14,608 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:14,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:14,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:14,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738313329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:14,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:14,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-11-09 02:48:14,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141146718] [2024-11-09 02:48:14,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:14,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:48:14,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:48:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:48:14,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-09 02:48:14,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 345 flow. Second operand has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:14,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:14,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-09 02:48:14,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:16,153 INFO L124 PetriNetUnfolderBase]: 6912/9869 cut-off events. [2024-11-09 02:48:16,153 INFO L125 PetriNetUnfolderBase]: For 17678/17678 co-relation queries the response was YES. [2024-11-09 02:48:16,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36346 conditions, 9869 events. 6912/9869 cut-off events. For 17678/17678 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 47969 event pairs, 164 based on Foata normal form. 23/9892 useless extension candidates. Maximal degree in co-relation 36324. Up to 3710 conditions per place. [2024-11-09 02:48:16,199 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 297 selfloop transitions, 179 changer transitions 0/477 dead transitions. [2024-11-09 02:48:16,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 477 transitions, 3756 flow [2024-11-09 02:48:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 02:48:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-09 02:48:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 476 transitions. [2024-11-09 02:48:16,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.379585326953748 [2024-11-09 02:48:16,201 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 345 flow. Second operand 38 states and 476 transitions. [2024-11-09 02:48:16,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 477 transitions, 3756 flow [2024-11-09 02:48:16,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 477 transitions, 3743 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:16,226 INFO L231 Difference]: Finished difference. Result has 122 places, 221 transitions, 2149 flow [2024-11-09 02:48:16,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2149, PETRI_PLACES=122, PETRI_TRANSITIONS=221} [2024-11-09 02:48:16,227 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 87 predicate places. [2024-11-09 02:48:16,227 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 221 transitions, 2149 flow [2024-11-09 02:48:16,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:16,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:16,228 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] [2024-11-09 02:48:16,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:16,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:48:16,428 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:16,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1512394287, now seen corresponding path program 11 times [2024-11-09 02:48:16,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:16,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911626308] [2024-11-09 02:48:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:16,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:16,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:16,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911626308] [2024-11-09 02:48:16,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911626308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:16,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113528083] [2024-11-09 02:48:16,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:48:16,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:16,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:16,560 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:16,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:48:16,631 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:48:16,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:16,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:16,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:16,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113528083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:16,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:16,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-11-09 02:48:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385276869] [2024-11-09 02:48:16,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:16,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:48:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:48:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:48:16,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-09 02:48:16,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 221 transitions, 2149 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:16,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:16,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-09 02:48:16,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:19,443 INFO L124 PetriNetUnfolderBase]: 10782/15332 cut-off events. [2024-11-09 02:48:19,443 INFO L125 PetriNetUnfolderBase]: For 69460/69460 co-relation queries the response was YES. [2024-11-09 02:48:19,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70061 conditions, 15332 events. 10782/15332 cut-off events. For 69460/69460 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 80033 event pairs, 654 based on Foata normal form. 24/15356 useless extension candidates. Maximal degree in co-relation 70021. Up to 6320 conditions per place. [2024-11-09 02:48:19,559 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 344 selfloop transitions, 477 changer transitions 0/822 dead transitions. [2024-11-09 02:48:19,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 822 transitions, 8513 flow [2024-11-09 02:48:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 02:48:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-09 02:48:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 578 transitions. [2024-11-09 02:48:19,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39807162534435264 [2024-11-09 02:48:19,561 INFO L175 Difference]: Start difference. First operand has 122 places, 221 transitions, 2149 flow. Second operand 44 states and 578 transitions. [2024-11-09 02:48:19,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 822 transitions, 8513 flow [2024-11-09 02:48:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 822 transitions, 8302 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-11-09 02:48:20,007 INFO L231 Difference]: Finished difference. Result has 178 places, 542 transitions, 6789 flow [2024-11-09 02:48:20,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6789, PETRI_PLACES=178, PETRI_TRANSITIONS=542} [2024-11-09 02:48:20,008 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 143 predicate places. [2024-11-09 02:48:20,008 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 542 transitions, 6789 flow [2024-11-09 02:48:20,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:20,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:20,009 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] [2024-11-09 02:48:20,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 02:48:20,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 02:48:20,210 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:20,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1885062753, now seen corresponding path program 12 times [2024-11-09 02:48:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:20,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239990508] [2024-11-09 02:48:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:20,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:20,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:20,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239990508] [2024-11-09 02:48:20,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239990508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:20,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446153770] [2024-11-09 02:48:20,353 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:48:20,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:20,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:20,355 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:20,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:48:20,434 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:48:20,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:20,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:20,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:20,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446153770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:20,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:20,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-11-09 02:48:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139047338] [2024-11-09 02:48:20,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:20,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:48:20,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:48:20,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:48:20,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-09 02:48:20,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 542 transitions, 6789 flow. Second operand has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:20,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:20,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-09 02:48:20,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:25,841 INFO L124 PetriNetUnfolderBase]: 16227/22868 cut-off events. [2024-11-09 02:48:25,841 INFO L125 PetriNetUnfolderBase]: For 150765/150765 co-relation queries the response was YES. [2024-11-09 02:48:26,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120157 conditions, 22868 events. 16227/22868 cut-off events. For 150765/150765 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 123690 event pairs, 530 based on Foata normal form. 24/22892 useless extension candidates. Maximal degree in co-relation 120099. Up to 9366 conditions per place. [2024-11-09 02:48:26,223 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 749 selfloop transitions, 746 changer transitions 0/1496 dead transitions. [2024-11-09 02:48:26,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1496 transitions, 17740 flow [2024-11-09 02:48:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-09 02:48:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2024-11-09 02:48:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 1320 transitions. [2024-11-09 02:48:26,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39603960396039606 [2024-11-09 02:48:26,226 INFO L175 Difference]: Start difference. First operand has 178 places, 542 transitions, 6789 flow. Second operand 101 states and 1320 transitions. [2024-11-09 02:48:26,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1496 transitions, 17740 flow [2024-11-09 02:48:27,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1496 transitions, 16893 flow, removed 255 selfloop flow, removed 6 redundant places. [2024-11-09 02:48:27,693 INFO L231 Difference]: Finished difference. Result has 308 places, 895 transitions, 13124 flow [2024-11-09 02:48:27,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6341, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=13124, PETRI_PLACES=308, PETRI_TRANSITIONS=895} [2024-11-09 02:48:27,694 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 273 predicate places. [2024-11-09 02:48:27,694 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 895 transitions, 13124 flow [2024-11-09 02:48:27,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:27,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:27,694 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] [2024-11-09 02:48:27,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:27,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:27,895 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:27,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash -450191007, now seen corresponding path program 13 times [2024-11-09 02:48:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:27,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479885743] [2024-11-09 02:48:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:28,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:28,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479885743] [2024-11-09 02:48:28,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479885743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:28,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779538706] [2024-11-09 02:48:28,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:48:28,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:28,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:28,012 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:28,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:48:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:28,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:48:28,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:28,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:28,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779538706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:28,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:28,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 02:48:28,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526865794] [2024-11-09 02:48:28,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:28,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:48:28,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:28,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:48:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:48:28,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-09 02:48:28,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 895 transitions, 13124 flow. Second operand has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:28,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:28,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-09 02:48:28,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:32,494 INFO L124 PetriNetUnfolderBase]: 13214/18788 cut-off events. [2024-11-09 02:48:32,494 INFO L125 PetriNetUnfolderBase]: For 143232/143232 co-relation queries the response was YES. [2024-11-09 02:48:32,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109184 conditions, 18788 events. 13214/18788 cut-off events. For 143232/143232 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 109049 event pairs, 1091 based on Foata normal form. 18/18802 useless extension candidates. Maximal degree in co-relation 109090. Up to 8750 conditions per place. [2024-11-09 02:48:32,749 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 631 selfloop transitions, 605 changer transitions 0/1240 dead transitions. [2024-11-09 02:48:32,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1240 transitions, 19147 flow [2024-11-09 02:48:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 02:48:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 02:48:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 406 transitions. [2024-11-09 02:48:32,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4556677890011223 [2024-11-09 02:48:32,751 INFO L175 Difference]: Start difference. First operand has 308 places, 895 transitions, 13124 flow. Second operand 27 states and 406 transitions. [2024-11-09 02:48:32,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1240 transitions, 19147 flow [2024-11-09 02:48:34,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 1240 transitions, 17211 flow, removed 538 selfloop flow, removed 16 redundant places. [2024-11-09 02:48:34,586 INFO L231 Difference]: Finished difference. Result has 325 places, 1010 transitions, 14835 flow [2024-11-09 02:48:34,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11803, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14835, PETRI_PLACES=325, PETRI_TRANSITIONS=1010} [2024-11-09 02:48:34,587 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 290 predicate places. [2024-11-09 02:48:34,587 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 1010 transitions, 14835 flow [2024-11-09 02:48:34,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:34,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:34,587 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] [2024-11-09 02:48:34,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 02:48:34,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 02:48:34,788 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:34,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1529634371, now seen corresponding path program 14 times [2024-11-09 02:48:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:34,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674685974] [2024-11-09 02:48:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674685974] [2024-11-09 02:48:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674685974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781690609] [2024-11-09 02:48:34,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:34,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:34,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:34,881 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:34,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:48:34,950 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:34,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:34,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:48:34,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:35,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:35,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781690609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:35,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:35,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-09 02:48:35,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680948783] [2024-11-09 02:48:35,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:35,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:48:35,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:48:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:48:35,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-09 02:48:35,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1010 transitions, 14835 flow. Second operand has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:35,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:35,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-09 02:48:35,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:39,671 INFO L124 PetriNetUnfolderBase]: 14549/20681 cut-off events. [2024-11-09 02:48:39,671 INFO L125 PetriNetUnfolderBase]: For 153712/153712 co-relation queries the response was YES. [2024-11-09 02:48:39,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118491 conditions, 20681 events. 14549/20681 cut-off events. For 153712/153712 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 121507 event pairs, 1859 based on Foata normal form. 17/20694 useless extension candidates. Maximal degree in co-relation 118402. Up to 9738 conditions per place. [2024-11-09 02:48:39,968 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 711 selfloop transitions, 538 changer transitions 0/1253 dead transitions. [2024-11-09 02:48:39,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1253 transitions, 19720 flow [2024-11-09 02:48:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:48:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:48:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 278 transitions. [2024-11-09 02:48:39,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4433811802232855 [2024-11-09 02:48:39,969 INFO L175 Difference]: Start difference. First operand has 325 places, 1010 transitions, 14835 flow. Second operand 19 states and 278 transitions. [2024-11-09 02:48:39,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1253 transitions, 19720 flow [2024-11-09 02:48:41,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1253 transitions, 19109 flow, removed 77 selfloop flow, removed 15 redundant places. [2024-11-09 02:48:41,720 INFO L231 Difference]: Finished difference. Result has 333 places, 1082 transitions, 17047 flow [2024-11-09 02:48:41,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=14224, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17047, PETRI_PLACES=333, PETRI_TRANSITIONS=1082} [2024-11-09 02:48:41,721 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 298 predicate places. [2024-11-09 02:48:41,721 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 1082 transitions, 17047 flow [2024-11-09 02:48:41,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:41,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:41,722 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] [2024-11-09 02:48:41,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:41,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:41,926 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:41,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1035096999, now seen corresponding path program 15 times [2024-11-09 02:48:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448333810] [2024-11-09 02:48:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448333810] [2024-11-09 02:48:42,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448333810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639121255] [2024-11-09 02:48:42,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:48:42,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:42,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:42,036 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:42,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:48:42,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:48:42,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:42,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:48:42,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:42,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639121255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:42,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:42,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-09 02:48:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282542224] [2024-11-09 02:48:42,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:42,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:48:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:48:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:48:42,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-09 02:48:42,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1082 transitions, 17047 flow. Second operand has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:42,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:42,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-09 02:48:42,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:46,746 INFO L124 PetriNetUnfolderBase]: 14691/20837 cut-off events. [2024-11-09 02:48:46,747 INFO L125 PetriNetUnfolderBase]: For 192056/192056 co-relation queries the response was YES. [2024-11-09 02:48:47,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124196 conditions, 20837 events. 14691/20837 cut-off events. For 192056/192056 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 121738 event pairs, 1859 based on Foata normal form. 18/20851 useless extension candidates. Maximal degree in co-relation 124109. Up to 9882 conditions per place. [2024-11-09 02:48:47,216 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 678 selfloop transitions, 529 changer transitions 0/1211 dead transitions. [2024-11-09 02:48:47,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1211 transitions, 20344 flow [2024-11-09 02:48:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:48:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:48:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 239 transitions. [2024-11-09 02:48:47,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42602495543672014 [2024-11-09 02:48:47,218 INFO L175 Difference]: Start difference. First operand has 333 places, 1082 transitions, 17047 flow. Second operand 17 states and 239 transitions. [2024-11-09 02:48:47,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1211 transitions, 20344 flow [2024-11-09 02:48:49,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1211 transitions, 20166 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-11-09 02:48:49,277 INFO L231 Difference]: Finished difference. Result has 343 places, 1088 transitions, 18098 flow [2024-11-09 02:48:49,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=16893, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18098, PETRI_PLACES=343, PETRI_TRANSITIONS=1088} [2024-11-09 02:48:49,278 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 308 predicate places. [2024-11-09 02:48:49,278 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 1088 transitions, 18098 flow [2024-11-09 02:48:49,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:49,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:49,278 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] [2024-11-09 02:48:49,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 02:48:49,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:49,479 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:49,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash 656487637, now seen corresponding path program 16 times [2024-11-09 02:48:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695640319] [2024-11-09 02:48:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:48:49,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695640319] [2024-11-09 02:48:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695640319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127154803] [2024-11-09 02:48:49,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:48:49,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:49,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:49,576 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:49,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 02:48:49,628 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:48:49,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:49,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:49,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:49,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:48:49,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127154803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:49,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:49,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-09 02:48:49,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272021123] [2024-11-09 02:48:49,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:49,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:48:49,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:48:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:48:49,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-09 02:48:49,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 1088 transitions, 18098 flow. Second operand has 19 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 19 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:49,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:49,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-09 02:48:49,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:59,371 INFO L124 PetriNetUnfolderBase]: 31365/44043 cut-off events. [2024-11-09 02:48:59,371 INFO L125 PetriNetUnfolderBase]: For 452989/452989 co-relation queries the response was YES. [2024-11-09 02:49:00,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265595 conditions, 44043 events. 31365/44043 cut-off events. For 452989/452989 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 260208 event pairs, 2576 based on Foata normal form. 23/44066 useless extension candidates. Maximal degree in co-relation 265509. Up to 18719 conditions per place. [2024-11-09 02:49:00,629 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 771 selfloop transitions, 1229 changer transitions 0/2001 dead transitions. [2024-11-09 02:49:00,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 2001 transitions, 33123 flow [2024-11-09 02:49:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-09 02:49:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-09 02:49:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 888 transitions. [2024-11-09 02:49:00,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39572192513368987 [2024-11-09 02:49:00,631 INFO L175 Difference]: Start difference. First operand has 343 places, 1088 transitions, 18098 flow. Second operand 68 states and 888 transitions. [2024-11-09 02:49:00,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 2001 transitions, 33123 flow