./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/array-eq-trans.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/array-eq-trans.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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:39:02,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:39:02,264 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:39:02,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:39:02,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:39:02,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:39:02,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:39:02,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:39:02,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:39:02,305 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:39:02,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:39:02,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:39:02,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:39:02,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:39:02,308 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:39:02,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:39:02,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:39:02,309 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:39:02,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:39:02,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:39:02,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:39:02,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:39:02,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:39:02,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:39:02,312 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:39:02,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:39:02,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:39:02,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:39:02,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:39:02,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:39:02,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:39:02,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:39:02,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:39:02,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:39:02,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:39:02,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:39:02,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:39:02,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:39:02,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:39:02,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:39:02,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:39:02,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:39:02,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-11-09 02:39:02,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:39:02,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:39:02,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:39:02,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:39:02,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:39:02,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-09 02:39:03,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:39:03,810 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:39:03,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-11-09 02:39:03,816 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7639f3829/adf0f429461e4861b8e87459e0cf8a69/FLAG40703ab5f [2024-11-09 02:39:03,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7639f3829/adf0f429461e4861b8e87459e0cf8a69 [2024-11-09 02:39:03,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:39:03,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:39:03,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:39:03,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:39:03,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:39:03,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:39:03" (1/1) ... [2024-11-09 02:39:03,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d01fb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:03, skipping insertion in model container [2024-11-09 02:39:03,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:39:03" (1/1) ... [2024-11-09 02:39:03,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:39:04,013 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/array-eq-trans.wvr.c[2776,2789] [2024-11-09 02:39:04,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:39:04,026 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:39:04,047 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/array-eq-trans.wvr.c[2776,2789] [2024-11-09 02:39:04,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:39:04,062 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:39:04,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04 WrapperNode [2024-11-09 02:39:04,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:39:04,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:39:04,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:39:04,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:39:04,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,091 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 194 [2024-11-09 02:39:04,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:39:04,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:39:04,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:39:04,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:39:04,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,117 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 02:39:04,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,127 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:39:04,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:39:04,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:39:04,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:39:04,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (1/1) ... [2024-11-09 02:39:04,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:39:04,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:04,166 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 02:39:04,168 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 02:39:04,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:39:04,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:39:04,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:39:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:39:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:39:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:39:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:39:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:39:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:39:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:39:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:39:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:39:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:39:04,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:39:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:39:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:39:04,214 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 02:39:04,341 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:39:04,343 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:39:04,702 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:39:04,702 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:39:04,913 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:39:04,914 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:39:04,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:39:04 BoogieIcfgContainer [2024-11-09 02:39:04,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:39:04,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:39:04,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:39:04,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:39:04,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:39:03" (1/3) ... [2024-11-09 02:39:04,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed47a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:39:04, skipping insertion in model container [2024-11-09 02:39:04,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:39:04" (2/3) ... [2024-11-09 02:39:04,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed47a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:39:04, skipping insertion in model container [2024-11-09 02:39:04,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:39:04" (3/3) ... [2024-11-09 02:39:04,924 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-11-09 02:39:04,936 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:39:04,937 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:39:04,937 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:39:04,981 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:39:05,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-09 02:39:05,051 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-09 02:39:05,052 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:39:05,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-09 02:39:05,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-09 02:39:05,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-09 02:39:05,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:39:05,070 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;@7131406e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:39:05,070 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:39:05,078 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:39:05,078 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-09 02:39:05,078 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:39:05,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:05,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:05,079 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 02:39:05,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:05,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1892444017, now seen corresponding path program 1 times [2024-11-09 02:39:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901768105] [2024-11-09 02:39:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:05,670 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 02:39:05,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:05,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901768105] [2024-11-09 02:39:05,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901768105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:05,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:05,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:39:05,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141920186] [2024-11-09 02:39:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:05,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:39:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:39:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:39:05,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:05,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:39:05,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:05,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:05,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:06,009 INFO L124 PetriNetUnfolderBase]: 1693/2288 cut-off events. [2024-11-09 02:39:06,010 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-09 02:39:06,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4716 conditions, 2288 events. 1693/2288 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9420 event pairs, 923 based on Foata normal form. 1/1521 useless extension candidates. Maximal degree in co-relation 2641. Up to 1399 conditions per place. [2024-11-09 02:39:06,023 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 31 selfloop transitions, 2 changer transitions 26/63 dead transitions. [2024-11-09 02:39:06,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 280 flow [2024-11-09 02:39:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:39:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:39:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-09 02:39:06,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-11-09 02:39:06,035 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 4 states and 89 transitions. [2024-11-09 02:39:06,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 280 flow [2024-11-09 02:39:06,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 63 transitions, 256 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:39:06,048 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 94 flow [2024-11-09 02:39:06,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2024-11-09 02:39:06,053 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-09 02:39:06,054 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 94 flow [2024-11-09 02:39:06,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:39:06,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:06,054 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] [2024-11-09 02:39:06,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:39:06,055 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 02:39:06,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -377412116, now seen corresponding path program 1 times [2024-11-09 02:39:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:06,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436426726] [2024-11-09 02:39:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:06,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:06,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436426726] [2024-11-09 02:39:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436426726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:06,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424846917] [2024-11-09 02:39:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:06,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:06,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:06,309 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 02:39:06,310 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 02:39:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:06,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:39:06,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:06,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:06,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:39:06,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2024-11-09 02:39:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:39:06,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424846917] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:06,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:39:06,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2024-11-09 02:39:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250139481] [2024-11-09 02:39:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:06,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:39:06,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:39:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:39:06,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:06,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 02:39:06,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:06,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:06,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:07,079 INFO L124 PetriNetUnfolderBase]: 1898/2559 cut-off events. [2024-11-09 02:39:07,080 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-09 02:39:07,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 2559 events. 1898/2559 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10847 event pairs, 461 based on Foata normal form. 1/1901 useless extension candidates. Maximal degree in co-relation 5366. Up to 1070 conditions per place. [2024-11-09 02:39:07,090 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 50 selfloop transitions, 4 changer transitions 20/78 dead transitions. [2024-11-09 02:39:07,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 78 transitions, 340 flow [2024-11-09 02:39:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-09 02:39:07,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 02:39:07,091 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 94 flow. Second operand 5 states and 110 transitions. [2024-11-09 02:39:07,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 78 transitions, 340 flow [2024-11-09 02:39:07,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 78 transitions, 326 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 02:39:07,094 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 108 flow [2024-11-09 02:39:07,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-09 02:39:07,095 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-11-09 02:39:07,095 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 108 flow [2024-11-09 02:39:07,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 02:39:07,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:07,095 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 02:39:07,119 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 02:39:07,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:07,296 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 02:39:07,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1636848034, now seen corresponding path program 1 times [2024-11-09 02:39:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:07,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811039904] [2024-11-09 02:39:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:07,384 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 02:39:07,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811039904] [2024-11-09 02:39:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811039904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:07,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:07,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:39:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636754887] [2024-11-09 02:39:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:07,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:39:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:07,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:39:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:39:07,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:07,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 02:39:07,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:07,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:07,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:07,552 INFO L124 PetriNetUnfolderBase]: 1508/2080 cut-off events. [2024-11-09 02:39:07,552 INFO L125 PetriNetUnfolderBase]: For 523/523 co-relation queries the response was YES. [2024-11-09 02:39:07,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4544 conditions, 2080 events. 1508/2080 cut-off events. For 523/523 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8391 event pairs, 886 based on Foata normal form. 57/1580 useless extension candidates. Maximal degree in co-relation 4530. Up to 1870 conditions per place. [2024-11-09 02:39:07,560 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 32 selfloop transitions, 3 changer transitions 19/58 dead transitions. [2024-11-09 02:39:07,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 259 flow [2024-11-09 02:39:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-09 02:39:07,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-11-09 02:39:07,561 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 108 flow. Second operand 5 states and 88 transitions. [2024-11-09 02:39:07,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 259 flow [2024-11-09 02:39:07,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 252 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 02:39:07,563 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 117 flow [2024-11-09 02:39:07,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-09 02:39:07,563 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-09 02:39:07,563 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 117 flow [2024-11-09 02:39:07,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 02:39:07,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:07,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:07,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:39:07,564 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 02:39:07,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:07,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1403967229, now seen corresponding path program 1 times [2024-11-09 02:39:07,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:07,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966716982] [2024-11-09 02:39:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:07,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:07,777 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 02:39:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:07,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966716982] [2024-11-09 02:39:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966716982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955881876] [2024-11-09 02:39:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:07,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:07,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:07,779 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 02:39:07,781 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 02:39:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:07,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:39:07,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:07,996 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 02:39:07,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:08,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:39:08,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2024-11-09 02:39:08,125 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 02:39:08,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955881876] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:08,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:39:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2024-11-09 02:39:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638759346] [2024-11-09 02:39:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:08,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:39:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:39:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:39:08,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:08,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 02:39:08,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:08,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:08,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:08,456 INFO L124 PetriNetUnfolderBase]: 3090/4301 cut-off events. [2024-11-09 02:39:08,456 INFO L125 PetriNetUnfolderBase]: For 1238/1238 co-relation queries the response was YES. [2024-11-09 02:39:08,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9559 conditions, 4301 events. 3090/4301 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 20423 event pairs, 693 based on Foata normal form. 2/3334 useless extension candidates. Maximal degree in co-relation 9537. Up to 1320 conditions per place. [2024-11-09 02:39:08,474 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 70 selfloop transitions, 6 changer transitions 19/99 dead transitions. [2024-11-09 02:39:08,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 99 transitions, 475 flow [2024-11-09 02:39:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:39:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:39:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-11-09 02:39:08,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:39:08,476 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 117 flow. Second operand 7 states and 140 transitions. [2024-11-09 02:39:08,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 99 transitions, 475 flow [2024-11-09 02:39:08,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 99 transitions, 461 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 02:39:08,478 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 137 flow [2024-11-09 02:39:08,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-09 02:39:08,479 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-11-09 02:39:08,479 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 137 flow [2024-11-09 02:39:08,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 02:39:08,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:08,480 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] [2024-11-09 02:39:08,493 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 02:39:08,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 02:39:08,681 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 02:39:08,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash -471271938, now seen corresponding path program 1 times [2024-11-09 02:39:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:08,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284881603] [2024-11-09 02:39:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:08,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:08,762 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 02:39:08,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:08,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284881603] [2024-11-09 02:39:08,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284881603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:08,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:08,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:39:08,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291966196] [2024-11-09 02:39:08,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:08,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:39:08,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:39:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:39:08,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:08,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:39:08,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:08,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:09,028 INFO L124 PetriNetUnfolderBase]: 2709/3833 cut-off events. [2024-11-09 02:39:09,029 INFO L125 PetriNetUnfolderBase]: For 1511/1511 co-relation queries the response was YES. [2024-11-09 02:39:09,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9057 conditions, 3833 events. 2709/3833 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17718 event pairs, 1951 based on Foata normal form. 88/3387 useless extension candidates. Maximal degree in co-relation 9032. Up to 3535 conditions per place. [2024-11-09 02:39:09,044 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 35 selfloop transitions, 3 changer transitions 19/61 dead transitions. [2024-11-09 02:39:09,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 305 flow [2024-11-09 02:39:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:39:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:39:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-09 02:39:09,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-09 02:39:09,046 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 137 flow. Second operand 5 states and 87 transitions. [2024-11-09 02:39:09,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 305 flow [2024-11-09 02:39:09,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 299 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 02:39:09,048 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 147 flow [2024-11-09 02:39:09,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-09 02:39:09,048 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2024-11-09 02:39:09,048 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 147 flow [2024-11-09 02:39:09,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:39:09,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:09,049 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 02:39:09,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:39:09,049 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 02:39:09,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash -283613148, now seen corresponding path program 1 times [2024-11-09 02:39:09,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:09,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895050244] [2024-11-09 02:39:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:09,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:39:09,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895050244] [2024-11-09 02:39:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895050244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45992915] [2024-11-09 02:39:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:09,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:09,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:09,188 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 02:39:09,189 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 02:39:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:09,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:39:09,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:39:09,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:39:09,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45992915] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:09,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:39:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2024-11-09 02:39:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331074514] [2024-11-09 02:39:09,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:09,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:39:09,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:09,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:39:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:39:09,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:09,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 02:39:09,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:09,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:09,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:09,867 INFO L124 PetriNetUnfolderBase]: 4258/6144 cut-off events. [2024-11-09 02:39:09,868 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-11-09 02:39:09,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14865 conditions, 6144 events. 4258/6144 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31038 event pairs, 1533 based on Foata normal form. 0/5638 useless extension candidates. Maximal degree in co-relation 14839. Up to 2546 conditions per place. [2024-11-09 02:39:09,896 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 72 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2024-11-09 02:39:09,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 445 flow [2024-11-09 02:39:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:39:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:39:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-11-09 02:39:09,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-09 02:39:09,897 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 147 flow. Second operand 7 states and 119 transitions. [2024-11-09 02:39:09,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 445 flow [2024-11-09 02:39:09,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 83 transitions, 433 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 02:39:09,901 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 167 flow [2024-11-09 02:39:09,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-11-09 02:39:09,901 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2024-11-09 02:39:09,901 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 167 flow [2024-11-09 02:39:09,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 02:39:09,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:09,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:09,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:39:10,102 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 02:39:10,103 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 02:39:10,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:10,103 INFO L85 PathProgramCache]: Analyzing trace with hash 147700837, now seen corresponding path program 1 times [2024-11-09 02:39:10,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:10,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021522431] [2024-11-09 02:39:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:11,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:11,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021522431] [2024-11-09 02:39:11,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021522431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:39:11,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:39:11,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 02:39:11,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26421353] [2024-11-09 02:39:11,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:11,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:39:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:11,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:39:11,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:39:11,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:11,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 167 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 02:39:11,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:11,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:11,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:11,441 INFO L124 PetriNetUnfolderBase]: 4883/7037 cut-off events. [2024-11-09 02:39:11,441 INFO L125 PetriNetUnfolderBase]: For 3650/3650 co-relation queries the response was YES. [2024-11-09 02:39:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18186 conditions, 7037 events. 4883/7037 cut-off events. For 3650/3650 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36787 event pairs, 1035 based on Foata normal form. 2/7036 useless extension candidates. Maximal degree in co-relation 18158. Up to 6187 conditions per place. [2024-11-09 02:39:11,465 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 75 selfloop transitions, 13 changer transitions 2/94 dead transitions. [2024-11-09 02:39:11,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 94 transitions, 502 flow [2024-11-09 02:39:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:39:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:39:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-09 02:39:11,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 02:39:11,466 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 167 flow. Second operand 6 states and 126 transitions. [2024-11-09 02:39:11,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 94 transitions, 502 flow [2024-11-09 02:39:11,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 496 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:39:11,470 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 276 flow [2024-11-09 02:39:11,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-11-09 02:39:11,471 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-09 02:39:11,471 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 276 flow [2024-11-09 02:39:11,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 02:39:11,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:11,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:11,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:39:11,472 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 02:39:11,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1704572735, now seen corresponding path program 1 times [2024-11-09 02:39:11,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:11,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620348438] [2024-11-09 02:39:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620348438] [2024-11-09 02:39:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620348438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888464031] [2024-11-09 02:39:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:11,630 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 02:39:11,631 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 02:39:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:11,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 02:39:11,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:11,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:11,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:39:11,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 39 [2024-11-09 02:39:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:39:11,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888464031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:39:11,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:39:11,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-09 02:39:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457127611] [2024-11-09 02:39:11,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:39:11,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:39:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:39:11,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:39:11,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:11,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 02:39:11,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:11,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:11,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:12,754 INFO L124 PetriNetUnfolderBase]: 8411/12220 cut-off events. [2024-11-09 02:39:12,754 INFO L125 PetriNetUnfolderBase]: For 13367/13367 co-relation queries the response was YES. [2024-11-09 02:39:12,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34852 conditions, 12220 events. 8411/12220 cut-off events. For 13367/13367 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 70141 event pairs, 5532 based on Foata normal form. 172/12384 useless extension candidates. Maximal degree in co-relation 31408. Up to 7015 conditions per place. [2024-11-09 02:39:12,812 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 88 selfloop transitions, 5 changer transitions 23/120 dead transitions. [2024-11-09 02:39:12,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 120 transitions, 822 flow [2024-11-09 02:39:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:39:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:39:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-11-09 02:39:12,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-09 02:39:12,814 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 276 flow. Second operand 7 states and 130 transitions. [2024-11-09 02:39:12,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 120 transitions, 822 flow [2024-11-09 02:39:12,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 807 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:39:12,825 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 318 flow [2024-11-09 02:39:12,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-11-09 02:39:12,825 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-11-09 02:39:12,826 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 318 flow [2024-11-09 02:39:12,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 02:39:12,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:12,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:12,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:39:13,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:13,028 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 02:39:13,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 127876301, now seen corresponding path program 1 times [2024-11-09 02:39:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910467848] [2024-11-09 02:39:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:39:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910467848] [2024-11-09 02:39:14,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910467848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063043377] [2024-11-09 02:39:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:14,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:14,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:14,085 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 02:39:14,086 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 02:39:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:14,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 02:39:14,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:14,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:15,245 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-11-09 02:39:15,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 236 [2024-11-09 02:39:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063043377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:39:20,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:39:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2024-11-09 02:39:20,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403151983] [2024-11-09 02:39:20,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:39:20,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:39:20,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:39:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:39:20,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:20,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 318 flow. Second operand has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 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 02:39:20,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:20,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:20,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:25,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 02:39:26,795 INFO L124 PetriNetUnfolderBase]: 11472/16731 cut-off events. [2024-11-09 02:39:26,795 INFO L125 PetriNetUnfolderBase]: For 14710/14718 co-relation queries the response was YES. [2024-11-09 02:39:26,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47290 conditions, 16731 events. 11472/16731 cut-off events. For 14710/14718 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 102430 event pairs, 2095 based on Foata normal form. 18/16737 useless extension candidates. Maximal degree in co-relation 41834. Up to 8956 conditions per place. [2024-11-09 02:39:26,890 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 149 selfloop transitions, 47 changer transitions 4/204 dead transitions. [2024-11-09 02:39:26,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 204 transitions, 1287 flow [2024-11-09 02:39:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:39:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:39:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 297 transitions. [2024-11-09 02:39:26,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4640625 [2024-11-09 02:39:26,892 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 318 flow. Second operand 16 states and 297 transitions. [2024-11-09 02:39:26,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 204 transitions, 1287 flow [2024-11-09 02:39:26,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 204 transitions, 1267 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-09 02:39:26,930 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 703 flow [2024-11-09 02:39:26,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=703, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-09 02:39:26,931 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2024-11-09 02:39:26,931 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 703 flow [2024-11-09 02:39:26,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 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 02:39:26,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:26,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:26,945 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 02:39:27,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:27,133 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 02:39:27,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1859023661, now seen corresponding path program 2 times [2024-11-09 02:39:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:27,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223071938] [2024-11-09 02:39:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:27,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:27,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223071938] [2024-11-09 02:39:27,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223071938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:27,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733131327] [2024-11-09 02:39:27,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:39:27,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:27,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:27,882 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 02:39:27,883 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 02:39:27,981 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:39:27,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:39:27,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 02:39:27,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:28,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:29,145 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-11-09 02:39:29,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 235 [2024-11-09 02:39:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:35,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733131327] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:35,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:39:35,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 10] total 20 [2024-11-09 02:39:35,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419722742] [2024-11-09 02:39:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:39:35,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:39:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:39:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:39:35,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:35,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 703 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:39:35,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:35,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:35,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:37,084 INFO L124 PetriNetUnfolderBase]: 11472/16701 cut-off events. [2024-11-09 02:39:37,085 INFO L125 PetriNetUnfolderBase]: For 32157/32161 co-relation queries the response was YES. [2024-11-09 02:39:37,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55181 conditions, 16701 events. 11472/16701 cut-off events. For 32157/32161 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 102109 event pairs, 3410 based on Foata normal form. 14/16707 useless extension candidates. Maximal degree in co-relation 51777. Up to 8956 conditions per place. [2024-11-09 02:39:37,154 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 95 selfloop transitions, 38 changer transitions 2/139 dead transitions. [2024-11-09 02:39:37,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 139 transitions, 1179 flow [2024-11-09 02:39:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:39:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:39:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-09 02:39:37,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-09 02:39:37,155 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 703 flow. Second operand 6 states and 136 transitions. [2024-11-09 02:39:37,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 139 transitions, 1179 flow [2024-11-09 02:39:37,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 1132 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-09 02:39:37,244 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 809 flow [2024-11-09 02:39:37,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-11-09 02:39:37,245 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 54 predicate places. [2024-11-09 02:39:37,245 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 809 flow [2024-11-09 02:39:37,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:39:37,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:37,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:37,259 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 02:39:37,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:37,447 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 02:39:37,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash -482371963, now seen corresponding path program 1 times [2024-11-09 02:39:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:37,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70069272] [2024-11-09 02:39:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:37,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:39:38,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:38,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70069272] [2024-11-09 02:39:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70069272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:38,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705791885] [2024-11-09 02:39:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:38,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:38,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:38,271 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 02:39:38,272 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 02:39:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:38,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 02:39:38,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:38,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:39,109 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-11-09 02:39:39,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 236 [2024-11-09 02:39:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:44,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705791885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:39:44,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:39:44,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2024-11-09 02:39:44,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402867898] [2024-11-09 02:39:44,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:39:44,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:39:44,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:39:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:39:44,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:44,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 809 flow. Second operand has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 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 02:39:44,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:44,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:44,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:45,424 INFO L124 PetriNetUnfolderBase]: 12984/18911 cut-off events. [2024-11-09 02:39:45,424 INFO L125 PetriNetUnfolderBase]: For 41849/41849 co-relation queries the response was YES. [2024-11-09 02:39:45,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63705 conditions, 18911 events. 12984/18911 cut-off events. For 41849/41849 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 117575 event pairs, 2185 based on Foata normal form. 8/18909 useless extension candidates. Maximal degree in co-relation 60334. Up to 13372 conditions per place. [2024-11-09 02:39:45,513 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 131 selfloop transitions, 45 changer transitions 3/183 dead transitions. [2024-11-09 02:39:45,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 1695 flow [2024-11-09 02:39:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:39:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:39:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-11-09 02:39:45,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-09 02:39:45,515 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 809 flow. Second operand 12 states and 207 transitions. [2024-11-09 02:39:45,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 1695 flow [2024-11-09 02:39:45,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 183 transitions, 1594 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-09 02:39:45,666 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 1066 flow [2024-11-09 02:39:45,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1066, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2024-11-09 02:39:45,667 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 64 predicate places. [2024-11-09 02:39:45,667 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 1066 flow [2024-11-09 02:39:45,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.681818181818182) internal successors, (235), 22 states have internal predecessors, (235), 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 02:39:45,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:45,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:45,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:39:45,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:45,868 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 02:39:45,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1908776229, now seen corresponding path program 2 times [2024-11-09 02:39:45,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:45,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211223289] [2024-11-09 02:39:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:45,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:39:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:46,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:39:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211223289] [2024-11-09 02:39:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211223289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:39:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704846410] [2024-11-09 02:39:46,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:39:46,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:39:46,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:39:46,471 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 02:39:46,472 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 02:39:46,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:39:46,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:39:46,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 02:39:46,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:39:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:47,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:39:47,645 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-11-09 02:39:47,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 235 [2024-11-09 02:39:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:39:54,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704846410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:39:54,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:39:54,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2024-11-09 02:39:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239507497] [2024-11-09 02:39:54,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:39:54,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:39:54,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:39:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:39:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:39:54,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:39:54,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 1066 flow. Second operand has 21 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 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 02:39:54,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:39:54,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:39:54,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:39:58,058 INFO L124 PetriNetUnfolderBase]: 20434/29883 cut-off events. [2024-11-09 02:39:58,058 INFO L125 PetriNetUnfolderBase]: For 76338/76338 co-relation queries the response was YES. [2024-11-09 02:39:58,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103653 conditions, 29883 events. 20434/29883 cut-off events. For 76338/76338 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 200367 event pairs, 4308 based on Foata normal form. 20/29899 useless extension candidates. Maximal degree in co-relation 99716. Up to 12854 conditions per place. [2024-11-09 02:39:58,193 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 235 selfloop transitions, 155 changer transitions 28/422 dead transitions. [2024-11-09 02:39:58,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 422 transitions, 3711 flow [2024-11-09 02:39:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 02:39:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 02:39:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 537 transitions. [2024-11-09 02:39:58,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46293103448275863 [2024-11-09 02:39:58,195 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 1066 flow. Second operand 29 states and 537 transitions. [2024-11-09 02:39:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 422 transitions, 3711 flow [2024-11-09 02:39:58,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 422 transitions, 3680 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-09 02:39:58,757 INFO L231 Difference]: Finished difference. Result has 139 places, 214 transitions, 2745 flow [2024-11-09 02:39:58,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2745, PETRI_PLACES=139, PETRI_TRANSITIONS=214} [2024-11-09 02:39:58,758 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 102 predicate places. [2024-11-09 02:39:58,759 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 214 transitions, 2745 flow [2024-11-09 02:39:58,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.380952380952381) internal successors, (218), 21 states have internal predecessors, (218), 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 02:39:58,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:39:58,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:39:58,771 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 02:39:58,959 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,SelfDestructingSolverStorable11 [2024-11-09 02:39:58,959 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 02:39:58,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:39:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash -196833306, now seen corresponding path program 2 times [2024-11-09 02:39:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:39:58,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508289587] [2024-11-09 02:39:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:39:58,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:39:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:00,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:00,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508289587] [2024-11-09 02:40:00,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508289587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:00,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528912524] [2024-11-09 02:40:00,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:40:00,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:00,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:00,171 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 02:40:00,172 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 02:40:00,271 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:40:00,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:40:00,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 02:40:00,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:40:00,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:01,576 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-11-09 02:40:01,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 236 [2024-11-09 02:40:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:40:08,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528912524] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:08,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:40:08,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 11] total 28 [2024-11-09 02:40:08,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475575967] [2024-11-09 02:40:08,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:40:08,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 02:40:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 02:40:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2024-11-09 02:40:08,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:40:08,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 214 transitions, 2745 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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 02:40:08,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:08,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:40:08,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:11,083 INFO L124 PetriNetUnfolderBase]: 21215/31120 cut-off events. [2024-11-09 02:40:11,084 INFO L125 PetriNetUnfolderBase]: For 135415/135415 co-relation queries the response was YES. [2024-11-09 02:40:11,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123473 conditions, 31120 events. 21215/31120 cut-off events. For 135415/135415 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 210009 event pairs, 7345 based on Foata normal form. 2/31118 useless extension candidates. Maximal degree in co-relation 119660. Up to 27006 conditions per place. [2024-11-09 02:40:11,363 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 180 selfloop transitions, 93 changer transitions 18/295 dead transitions. [2024-11-09 02:40:11,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 295 transitions, 3910 flow [2024-11-09 02:40:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:40:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:40:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-11-09 02:40:11,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-09 02:40:11,365 INFO L175 Difference]: Start difference. First operand has 139 places, 214 transitions, 2745 flow. Second operand 8 states and 172 transitions. [2024-11-09 02:40:11,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 295 transitions, 3910 flow [2024-11-09 02:40:13,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 295 transitions, 3590 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-11-09 02:40:13,382 INFO L231 Difference]: Finished difference. Result has 143 places, 235 transitions, 3058 flow [2024-11-09 02:40:13,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3058, PETRI_PLACES=143, PETRI_TRANSITIONS=235} [2024-11-09 02:40:13,382 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 106 predicate places. [2024-11-09 02:40:13,382 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 235 transitions, 3058 flow [2024-11-09 02:40:13,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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 02:40:13,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:13,382 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:13,394 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 02:40:13,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 02:40:13,583 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 02:40:13,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:13,583 INFO L85 PathProgramCache]: Analyzing trace with hash -860482464, now seen corresponding path program 3 times [2024-11-09 02:40:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:13,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018157112] [2024-11-09 02:40:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:13,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018157112] [2024-11-09 02:40:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018157112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883437972] [2024-11-09 02:40:14,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:40:14,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:14,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:14,729 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 02:40:14,730 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 02:40:14,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:40:14,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:40:14,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 02:40:14,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:40:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:40:15,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:40:15,777 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-11-09 02:40:15,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 237 [2024-11-09 02:40:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:40:24,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883437972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:40:24,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:40:24,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 7] total 25 [2024-11-09 02:40:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677037313] [2024-11-09 02:40:24,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:40:24,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 02:40:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:40:24,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 02:40:24,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2024-11-09 02:40:24,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-09 02:40:24,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 235 transitions, 3058 flow. Second operand has 26 states, 26 states have (on average 9.76923076923077) internal successors, (254), 26 states have internal predecessors, (254), 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 02:40:24,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:40:24,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-09 02:40:24,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:40:27,932 INFO L124 PetriNetUnfolderBase]: 22106/32539 cut-off events. [2024-11-09 02:40:27,932 INFO L125 PetriNetUnfolderBase]: For 141518/141518 co-relation queries the response was YES. [2024-11-09 02:40:28,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131400 conditions, 32539 events. 22106/32539 cut-off events. For 141518/141518 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 222798 event pairs, 7343 based on Foata normal form. 2/32537 useless extension candidates. Maximal degree in co-relation 127074. Up to 27394 conditions per place. [2024-11-09 02:40:28,126 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 174 selfloop transitions, 121 changer transitions 25/324 dead transitions. [2024-11-09 02:40:28,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 324 transitions, 4370 flow [2024-11-09 02:40:28,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:40:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:40:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 246 transitions. [2024-11-09 02:40:28,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36176470588235293 [2024-11-09 02:40:28,128 INFO L175 Difference]: Start difference. First operand has 143 places, 235 transitions, 3058 flow. Second operand 17 states and 246 transitions. [2024-11-09 02:40:28,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 324 transitions, 4370 flow [2024-11-09 02:40:29,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 324 transitions, 4278 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:40:29,799 INFO L231 Difference]: Finished difference. Result has 162 places, 255 transitions, 3587 flow [2024-11-09 02:40:29,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3587, PETRI_PLACES=162, PETRI_TRANSITIONS=255} [2024-11-09 02:40:29,800 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 125 predicate places. [2024-11-09 02:40:29,800 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 255 transitions, 3587 flow [2024-11-09 02:40:29,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.76923076923077) internal successors, (254), 26 states have internal predecessors, (254), 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 02:40:29,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:40:29,800 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:40:29,812 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 02:40:30,001 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,SelfDestructingSolverStorable13 [2024-11-09 02:40:30,001 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 02:40:30,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:40:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash 796958896, now seen corresponding path program 4 times [2024-11-09 02:40:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:40:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597139599] [2024-11-09 02:40:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:40:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:40:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:40:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:40:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:40:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597139599] [2024-11-09 02:40:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597139599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:40:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900491786] [2024-11-09 02:40:31,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:40:31,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:40:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:40:31,169 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 02:40:31,169 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 02:40:31,264 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:40:31,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:40:31,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 02:40:31,267 INFO L278 TraceCheckSpWp]: Computing forward predicates...