./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:39:38,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:39:38,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:39:38,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:39:38,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:39:38,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:39:38,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:39:38,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:39:38,808 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:39:38,809 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:39:38,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:39:38,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:39:38,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:39:38,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:39:38,813 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:39:38,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:39:38,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:39:38,814 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:39:38,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:39:38,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:39:38,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:39:38,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:39:38,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:39:38,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:39:38,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:39:38,820 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:39:38,820 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:39:38,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:39:38,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:39:38,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:39:38,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:39:38,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:39:38,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:39:38,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:39:38,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:38,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:39:38,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:39:38,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:39:38,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:39:38,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:39:38,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:39:38,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:39:38,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:39:38,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:39:38,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2024-11-23 01:39:39,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:39:39,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:39:39,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:39:39,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:39:39,123 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:39:39,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok.i [2024-11-23 01:39:40,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:39:40,820 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:39:40,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok.i [2024-11-23 01:39:40,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2332faca6/85fb165ca36d40c6bc829d48121676f2/FLAG701b8cb3b [2024-11-23 01:39:40,854 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2332faca6/85fb165ca36d40c6bc829d48121676f2 [2024-11-23 01:39:40,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:39:40,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:39:40,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:40,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:39:40,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:39:40,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:40" (1/1) ... [2024-11-23 01:39:40,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3335dbc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:40, skipping insertion in model container [2024-11-23 01:39:40,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:40" (1/1) ... [2024-11-23 01:39:40,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:39:41,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:41,397 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:39:41,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:39:41,525 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:39:41,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41 WrapperNode [2024-11-23 01:39:41,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:39:41,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:41,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:39:41,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:39:41,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,631 INFO L138 Inliner]: procedures = 274, calls = 94, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 253 [2024-11-23 01:39:41,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:39:41,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:39:41,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:39:41,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:39:41,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,648 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,670 INFO L175 MemorySlicer]: Split 75 memory accesses to 4 slices as follows [2, 5, 22, 46]. 61 percent of accesses are in the largest equivalence class. The 50 initializations are split as follows [2, 5, 20, 23]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-23 01:39:41,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:39:41,698 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:39:41,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:39:41,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:39:41,699 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (1/1) ... [2024-11-23 01:39:41,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:39:41,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:41,729 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) [2024-11-23 01:39:41,731 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 [2024-11-23 01:39:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-23 01:39:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-23 01:39:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-23 01:39:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-23 01:39:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:39:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:39:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:39:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:39:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 01:39:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:39:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:39:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:39:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 01:39:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:39:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:39:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:39:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:39:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:39:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 01:39:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:39:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:39:41,776 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:39:41,903 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:39:41,904 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:39:42,307 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:39:42,308 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:39:42,702 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:39:42,702 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 01:39:42,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:42 BoogieIcfgContainer [2024-11-23 01:39:42,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:39:42,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:39:42,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:39:42,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:39:42,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:39:40" (1/3) ... [2024-11-23 01:39:42,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e84a21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:42, skipping insertion in model container [2024-11-23 01:39:42,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:41" (2/3) ... [2024-11-23 01:39:42,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e84a21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:42, skipping insertion in model container [2024-11-23 01:39:42,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:42" (3/3) ... [2024-11-23 01:39:42,714 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2024-11-23 01:39:42,780 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:39:42,781 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-23 01:39:42,781 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:39:42,906 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:39:42,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 136 flow [2024-11-23 01:39:42,986 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-23 01:39:42,987 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:39:42,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 7/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 164 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-11-23 01:39:42,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 136 flow [2024-11-23 01:39:42,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 123 flow [2024-11-23 01:39:43,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:39:43,017 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;@16624559, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:39:43,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-23 01:39:43,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:39:43,027 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-11-23 01:39:43,027 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 01:39:43,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:43,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:43,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:43,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:43,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2091656933, now seen corresponding path program 1 times [2024-11-23 01:39:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:43,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000818834] [2024-11-23 01:39:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:43,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000818834] [2024-11-23 01:39:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000818834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:43,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:43,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:43,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551877567] [2024-11-23 01:39:43,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:43,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:43,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:43,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:39:43,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-11-23 01:39:43,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:43,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:39:43,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:44,497 INFO L124 PetriNetUnfolderBase]: 1019/2078 cut-off events. [2024-11-23 01:39:44,497 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-23 01:39:44,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 2078 events. 1019/2078 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13394 event pairs, 215 based on Foata normal form. 42/1748 useless extension candidates. Maximal degree in co-relation 3596. Up to 1122 conditions per place. [2024-11-23 01:39:44,524 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 81 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-11-23 01:39:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 408 flow [2024-11-23 01:39:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:39:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:39:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-11-23 01:39:44,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754098360655738 [2024-11-23 01:39:44,542 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 123 flow. Second operand 5 states and 206 transitions. [2024-11-23 01:39:44,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 408 flow [2024-11-23 01:39:44,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:39:44,554 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 164 flow [2024-11-23 01:39:44,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-11-23 01:39:44,561 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2024-11-23 01:39:44,562 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 164 flow [2024-11-23 01:39:44,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-11-23 01:39:44,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:44,563 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:44,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:39:44,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:44,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1166859742, now seen corresponding path program 1 times [2024-11-23 01:39:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:44,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109861248] [2024-11-23 01:39:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:44,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:44,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109861248] [2024-11-23 01:39:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109861248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:44,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:44,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811561803] [2024-11-23 01:39:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:44,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:39:44,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:39:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:39:44,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-11-23 01:39:44,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:44,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:44,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-11-23 01:39:44,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:45,532 INFO L124 PetriNetUnfolderBase]: 1304/2561 cut-off events. [2024-11-23 01:39:45,532 INFO L125 PetriNetUnfolderBase]: For 355/363 co-relation queries the response was YES. [2024-11-23 01:39:45,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 2561 events. 1304/2561 cut-off events. For 355/363 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16116 event pairs, 197 based on Foata normal form. 8/2145 useless extension candidates. Maximal degree in co-relation 4709. Up to 1022 conditions per place. [2024-11-23 01:39:45,558 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 118 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-11-23 01:39:45,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 152 transitions, 631 flow [2024-11-23 01:39:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:39:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:39:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2024-11-23 01:39:45,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6721311475409836 [2024-11-23 01:39:45,562 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 164 flow. Second operand 7 states and 287 transitions. [2024-11-23 01:39:45,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 152 transitions, 631 flow [2024-11-23 01:39:45,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 152 transitions, 631 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:39:45,576 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 256 flow [2024-11-23 01:39:45,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-11-23 01:39:45,577 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-11-23 01:39:45,578 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 256 flow [2024-11-23 01:39:45,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:45,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:45,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:45,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:39:45,579 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:45,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash 995765135, now seen corresponding path program 1 times [2024-11-23 01:39:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549027961] [2024-11-23 01:39:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:45,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:45,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549027961] [2024-11-23 01:39:45,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549027961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:45,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:45,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:39:45,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013007455] [2024-11-23 01:39:45,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:45,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:39:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:39:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:39:45,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-23 01:39:45,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:45,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:45,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-23 01:39:45,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:45,891 INFO L124 PetriNetUnfolderBase]: 515/1171 cut-off events. [2024-11-23 01:39:45,891 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-11-23 01:39:45,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 1171 events. 515/1171 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6932 event pairs, 296 based on Foata normal form. 29/1106 useless extension candidates. Maximal degree in co-relation 2437. Up to 510 conditions per place. [2024-11-23 01:39:45,898 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 42 selfloop transitions, 2 changer transitions 6/74 dead transitions. [2024-11-23 01:39:45,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 74 transitions, 335 flow [2024-11-23 01:39:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:39:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:39:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-23 01:39:45,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-11-23 01:39:45,900 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 256 flow. Second operand 3 states and 120 transitions. [2024-11-23 01:39:45,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 74 transitions, 335 flow [2024-11-23 01:39:45,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 314 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-23 01:39:45,907 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 197 flow [2024-11-23 01:39:45,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-23 01:39:45,908 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-11-23 01:39:45,908 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 197 flow [2024-11-23 01:39:45,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:45,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:45,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:45,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:39:45,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:45,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:45,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1812914345, now seen corresponding path program 1 times [2024-11-23 01:39:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:45,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777516683] [2024-11-23 01:39:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:45,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777516683] [2024-11-23 01:39:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777516683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:46,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132796923] [2024-11-23 01:39:46,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:46,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:39:46,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:39:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:39:46,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:39:46,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:46,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:46,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:39:46,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:46,509 INFO L124 PetriNetUnfolderBase]: 505/1125 cut-off events. [2024-11-23 01:39:46,510 INFO L125 PetriNetUnfolderBase]: For 203/207 co-relation queries the response was YES. [2024-11-23 01:39:46,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437 conditions, 1125 events. 505/1125 cut-off events. For 203/207 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6475 event pairs, 179 based on Foata normal form. 14/1061 useless extension candidates. Maximal degree in co-relation 2207. Up to 476 conditions per place. [2024-11-23 01:39:46,519 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 71 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2024-11-23 01:39:46,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 441 flow [2024-11-23 01:39:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:39:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:39:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-23 01:39:46,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.592896174863388 [2024-11-23 01:39:46,521 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 197 flow. Second operand 6 states and 217 transitions. [2024-11-23 01:39:46,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 441 flow [2024-11-23 01:39:46,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:39:46,528 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 211 flow [2024-11-23 01:39:46,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2024-11-23 01:39:46,529 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-11-23 01:39:46,530 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 211 flow [2024-11-23 01:39:46,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:46,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:46,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:46,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:39:46,531 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:46,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1812915339, now seen corresponding path program 1 times [2024-11-23 01:39:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:46,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245161600] [2024-11-23 01:39:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245161600] [2024-11-23 01:39:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245161600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:46,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:46,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181448516] [2024-11-23 01:39:46,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:46,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:46,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:39:46,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-23 01:39:46,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:46,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:39:46,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:46,829 INFO L124 PetriNetUnfolderBase]: 440/978 cut-off events. [2024-11-23 01:39:46,829 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-11-23 01:39:46,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 978 events. 440/978 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5188 event pairs, 293 based on Foata normal form. 24/943 useless extension candidates. Maximal degree in co-relation 2000. Up to 591 conditions per place. [2024-11-23 01:39:46,836 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 53 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-23 01:39:46,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 354 flow [2024-11-23 01:39:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-23 01:39:46,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188524590163934 [2024-11-23 01:39:46,838 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 211 flow. Second operand 4 states and 151 transitions. [2024-11-23 01:39:46,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 354 flow [2024-11-23 01:39:46,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 334 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-23 01:39:46,843 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 210 flow [2024-11-23 01:39:46,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2024-11-23 01:39:46,844 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-11-23 01:39:46,844 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 210 flow [2024-11-23 01:39:46,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-23 01:39:46,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:46,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:46,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:39:46,845 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:46,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -652173596, now seen corresponding path program 1 times [2024-11-23 01:39:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620315510] [2024-11-23 01:39:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620315510] [2024-11-23 01:39:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620315510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:47,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:47,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:39:47,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53582691] [2024-11-23 01:39:47,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:47,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:39:47,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:39:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:39:47,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-23 01:39:47,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-23 01:39:47,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:47,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-23 01:39:47,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:47,503 INFO L124 PetriNetUnfolderBase]: 398/936 cut-off events. [2024-11-23 01:39:47,503 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-11-23 01:39:47,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2117 conditions, 936 events. 398/936 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4981 event pairs, 118 based on Foata normal form. 12/907 useless extension candidates. Maximal degree in co-relation 1521. Up to 457 conditions per place. [2024-11-23 01:39:47,511 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 55 selfloop transitions, 5 changer transitions 3/87 dead transitions. [2024-11-23 01:39:47,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 388 flow [2024-11-23 01:39:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:39:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:39:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-23 01:39:47,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131147540983607 [2024-11-23 01:39:47,512 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 210 flow. Second operand 5 states and 187 transitions. [2024-11-23 01:39:47,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 388 flow [2024-11-23 01:39:47,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:39:47,518 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 215 flow [2024-11-23 01:39:47,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2024-11-23 01:39:47,519 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-11-23 01:39:47,519 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 215 flow [2024-11-23 01:39:47,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-11-23 01:39:47,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:47,520 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:47,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:39:47,521 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:47,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1928735010, now seen corresponding path program 1 times [2024-11-23 01:39:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:47,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644661856] [2024-11-23 01:39:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:48,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644661856] [2024-11-23 01:39:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644661856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925507811] [2024-11-23 01:39:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:48,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:48,162 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) [2024-11-23 01:39:48,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:39:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:48,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 01:39:48,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:48,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-23 01:39:48,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-23 01:39:48,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2024-11-23 01:39:48,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:39:48,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-11-23 01:39:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:48,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:39:48,927 INFO L349 Elim1Store]: treesize reduction 47, result has 53.5 percent of original size [2024-11-23 01:39:48,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 438 treesize of output 343 [2024-11-23 01:39:48,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:39:48,969 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 179 treesize of output 169 [2024-11-23 01:39:48,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-23 01:39:49,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:39:49,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 180 [2024-11-23 01:39:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:49,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925507811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:39:49,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:39:49,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2024-11-23 01:39:49,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022427902] [2024-11-23 01:39:49,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:39:49,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 01:39:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:49,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 01:39:49,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-23 01:39:49,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-11-23 01:39:49,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 215 flow. Second operand has 17 states, 17 states have (on average 24.41176470588235) internal successors, (415), 17 states have internal predecessors, (415), 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) [2024-11-23 01:39:49,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:49,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-11-23 01:39:49,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:50,037 INFO L124 PetriNetUnfolderBase]: 592/1325 cut-off events. [2024-11-23 01:39:50,037 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-11-23 01:39:50,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2927 conditions, 1325 events. 592/1325 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7112 event pairs, 123 based on Foata normal form. 12/1252 useless extension candidates. Maximal degree in co-relation 2258. Up to 211 conditions per place. [2024-11-23 01:39:50,046 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 94 selfloop transitions, 10 changer transitions 3/128 dead transitions. [2024-11-23 01:39:50,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 128 transitions, 579 flow [2024-11-23 01:39:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:39:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:39:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-11-23 01:39:50,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5377049180327869 [2024-11-23 01:39:50,049 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 215 flow. Second operand 10 states and 328 transitions. [2024-11-23 01:39:50,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 128 transitions, 579 flow [2024-11-23 01:39:50,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 569 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:39:50,054 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 231 flow [2024-11-23 01:39:50,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=231, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-11-23 01:39:50,057 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-11-23 01:39:50,058 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 231 flow [2024-11-23 01:39:50,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 24.41176470588235) internal successors, (415), 17 states have internal predecessors, (415), 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) [2024-11-23 01:39:50,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:50,058 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:50,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:39:50,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:50,260 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:39:50,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash -338756130, now seen corresponding path program 1 times [2024-11-23 01:39:50,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:50,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468452845] [2024-11-23 01:39:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:50,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468452845] [2024-11-23 01:39:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468452845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762269433] [2024-11-23 01:39:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:50,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:50,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:50,913 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) [2024-11-23 01:39:50,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:39:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:51,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 01:39:51,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:51,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2024-11-23 01:39:51,149 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:39:51,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 01:39:51,172 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2024-11-23 01:39:51,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2024-11-23 01:39:51,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 01:39:51,236 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:39:51,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 42 [2024-11-23 01:39:51,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:39:51,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 27 [2024-11-23 01:39:51,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2024-11-23 01:39:51,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:39:51,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23 [2024-11-23 01:39:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:51,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:39:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762269433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:39:53,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:39:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-23 01:39:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869654928] [2024-11-23 01:39:53,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:39:53,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 01:39:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 01:39:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=264, Unknown=1, NotChecked=0, Total=342 [2024-11-23 01:39:55,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:39:56,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:39:56,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-11-23 01:39:56,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 231 flow. Second operand has 19 states, 19 states have (on average 21.42105263157895) internal successors, (407), 19 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:39:56,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:56,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-11-23 01:39:56,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:06,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:08,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:11,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:12,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:14,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:15,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:17,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:19,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:20,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:22,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:23,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:25,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:26,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:29,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:30,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:32,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:34,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:36,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:38,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:39,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:41,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:43,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:45,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-23 01:40:45,096 INFO L124 PetriNetUnfolderBase]: 1211/2528 cut-off events. [2024-11-23 01:40:45,096 INFO L125 PetriNetUnfolderBase]: For 541/541 co-relation queries the response was YES. [2024-11-23 01:40:45,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5890 conditions, 2528 events. 1211/2528 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 14986 event pairs, 163 based on Foata normal form. 36/2437 useless extension candidates. Maximal degree in co-relation 4785. Up to 626 conditions per place. [2024-11-23 01:40:45,115 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 187 selfloop transitions, 21 changer transitions 3/228 dead transitions. [2024-11-23 01:40:45,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 228 transitions, 1105 flow [2024-11-23 01:40:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 01:40:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-23 01:40:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 536 transitions. [2024-11-23 01:40:45,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5168756027000965 [2024-11-23 01:40:45,118 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 231 flow. Second operand 17 states and 536 transitions. [2024-11-23 01:40:45,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 228 transitions, 1105 flow [2024-11-23 01:40:45,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 228 transitions, 1070 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-23 01:40:45,127 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 344 flow [2024-11-23 01:40:45,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=344, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-11-23 01:40:45,129 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-11-23 01:40:45,129 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 344 flow [2024-11-23 01:40:45,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.42105263157895) internal successors, (407), 19 states have internal predecessors, (407), 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) [2024-11-23 01:40:45,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:45,130 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:45,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:40:45,330 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,SelfDestructingSolverStorable7 [2024-11-23 01:40:45,331 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:45,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash 872896129, now seen corresponding path program 1 times [2024-11-23 01:40:45,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:45,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745518120] [2024-11-23 01:40:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:45,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745518120] [2024-11-23 01:40:45,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745518120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317083174] [2024-11-23 01:40:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:45,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:45,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:45,788 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) [2024-11-23 01:40:45,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:40:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:45,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 01:40:45,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:46,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2024-11-23 01:40:46,130 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-23 01:40:46,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-23 01:40:46,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-23 01:40:46,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-23 01:40:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:46,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:46,467 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-23 01:40:46,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 85 [2024-11-23 01:40:46,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:40:46,480 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 86 treesize of output 82 [2024-11-23 01:40:46,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-23 01:40:46,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:40:46,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-23 01:40:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317083174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:46,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:46,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2024-11-23 01:40:46,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071737852] [2024-11-23 01:40:46,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:46,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 01:40:46,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:46,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 01:40:46,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-23 01:40:46,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-11-23 01:40:46,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 344 flow. Second operand has 23 states, 23 states have (on average 24.08695652173913) internal successors, (554), 23 states have internal predecessors, (554), 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) [2024-11-23 01:40:46,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:46,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-11-23 01:40:46,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:47,574 INFO L124 PetriNetUnfolderBase]: 1022/2291 cut-off events. [2024-11-23 01:40:47,574 INFO L125 PetriNetUnfolderBase]: For 1161/1161 co-relation queries the response was YES. [2024-11-23 01:40:47,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 2291 events. 1022/2291 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 13575 event pairs, 163 based on Foata normal form. 84/2250 useless extension candidates. Maximal degree in co-relation 5373. Up to 434 conditions per place. [2024-11-23 01:40:47,618 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 133 selfloop transitions, 28 changer transitions 3/183 dead transitions. [2024-11-23 01:40:47,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 183 transitions, 915 flow [2024-11-23 01:40:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 01:40:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-23 01:40:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 510 transitions. [2024-11-23 01:40:47,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5225409836065574 [2024-11-23 01:40:47,621 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 344 flow. Second operand 16 states and 510 transitions. [2024-11-23 01:40:47,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 183 transitions, 915 flow [2024-11-23 01:40:47,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 183 transitions, 882 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-11-23 01:40:47,629 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 367 flow [2024-11-23 01:40:47,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=367, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-11-23 01:40:47,631 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2024-11-23 01:40:47,631 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 367 flow [2024-11-23 01:40:47,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.08695652173913) internal successors, (554), 23 states have internal predecessors, (554), 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) [2024-11-23 01:40:47,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:47,632 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:47,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:40:47,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:47,836 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:47,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1577692278, now seen corresponding path program 1 times [2024-11-23 01:40:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:47,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661679821] [2024-11-23 01:40:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:47,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:47,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661679821] [2024-11-23 01:40:47,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661679821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:47,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271233687] [2024-11-23 01:40:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:47,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:47,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:47,928 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) [2024-11-23 01:40:47,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:40:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:48,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:40:48,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:48,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:40:48,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271233687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:48,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:40:48,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:40:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608512344] [2024-11-23 01:40:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:48,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:40:48,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:40:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:40:48,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:48,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-11-23 01:40:48,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:48,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:48,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:48,475 INFO L124 PetriNetUnfolderBase]: 992/2221 cut-off events. [2024-11-23 01:40:48,476 INFO L125 PetriNetUnfolderBase]: For 1278/1278 co-relation queries the response was YES. [2024-11-23 01:40:48,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 2221 events. 992/2221 cut-off events. For 1278/1278 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12993 event pairs, 183 based on Foata normal form. 36/2096 useless extension candidates. Maximal degree in co-relation 4541. Up to 1273 conditions per place. [2024-11-23 01:40:48,494 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 77 selfloop transitions, 7 changer transitions 3/107 dead transitions. [2024-11-23 01:40:48,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 608 flow [2024-11-23 01:40:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:40:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:40:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-11-23 01:40:48,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-11-23 01:40:48,496 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 367 flow. Second operand 6 states and 210 transitions. [2024-11-23 01:40:48,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 608 flow [2024-11-23 01:40:48,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 107 transitions, 570 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-23 01:40:48,502 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 339 flow [2024-11-23 01:40:48,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-11-23 01:40:48,503 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-11-23 01:40:48,503 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 339 flow [2024-11-23 01:40:48,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-11-23 01:40:48,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:48,503 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:48,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:40:48,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:48,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:48,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1663819647, now seen corresponding path program 1 times [2024-11-23 01:40:48,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:48,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143914140] [2024-11-23 01:40:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:48,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:40:48,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:48,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143914140] [2024-11-23 01:40:48,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143914140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:48,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:40:48,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:40:48,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376809871] [2024-11-23 01:40:48,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:48,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:40:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:40:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:40:48,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:48,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-23 01:40:48,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:48,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:48,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:49,070 INFO L124 PetriNetUnfolderBase]: 947/2144 cut-off events. [2024-11-23 01:40:49,071 INFO L125 PetriNetUnfolderBase]: For 1282/1282 co-relation queries the response was YES. [2024-11-23 01:40:49,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5181 conditions, 2144 events. 947/2144 cut-off events. For 1282/1282 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12560 event pairs, 508 based on Foata normal form. 36/2051 useless extension candidates. Maximal degree in co-relation 4040. Up to 1018 conditions per place. [2024-11-23 01:40:49,093 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 58 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-11-23 01:40:49,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 505 flow [2024-11-23 01:40:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:40:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:40:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-23 01:40:49,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5778688524590164 [2024-11-23 01:40:49,094 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 339 flow. Second operand 4 states and 141 transitions. [2024-11-23 01:40:49,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 505 flow [2024-11-23 01:40:49,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 491 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-23 01:40:49,100 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 343 flow [2024-11-23 01:40:49,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-11-23 01:40:49,103 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-11-23 01:40:49,103 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 343 flow [2024-11-23 01:40:49,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-23 01:40:49,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:49,104 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] [2024-11-23 01:40:49,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:40:49,105 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:49,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1389441138, now seen corresponding path program 1 times [2024-11-23 01:40:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:49,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181629807] [2024-11-23 01:40:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:49,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:49,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181629807] [2024-11-23 01:40:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181629807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674098420] [2024-11-23 01:40:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:49,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:49,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:49,180 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) [2024-11-23 01:40:49,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:40:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:49,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:40:49,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:49,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-23 01:40:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:49,332 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:40:49,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674098420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:40:49,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:40:49,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 01:40:49,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463799546] [2024-11-23 01:40:49,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:40:49,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:40:49,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:49,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:40:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:40:49,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-23 01:40:49,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:49,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:49,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-23 01:40:49,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:49,542 INFO L124 PetriNetUnfolderBase]: 684/1717 cut-off events. [2024-11-23 01:40:49,542 INFO L125 PetriNetUnfolderBase]: For 983/983 co-relation queries the response was YES. [2024-11-23 01:40:49,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 1717 events. 684/1717 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 9588 event pairs, 150 based on Foata normal form. 66/1698 useless extension candidates. Maximal degree in co-relation 2178. Up to 998 conditions per place. [2024-11-23 01:40:49,551 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 59 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-11-23 01:40:49,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 488 flow [2024-11-23 01:40:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:40:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:40:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-11-23 01:40:49,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.644808743169399 [2024-11-23 01:40:49,553 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 343 flow. Second operand 3 states and 118 transitions. [2024-11-23 01:40:49,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 488 flow [2024-11-23 01:40:49,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 473 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:40:49,557 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 336 flow [2024-11-23 01:40:49,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-11-23 01:40:49,560 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-11-23 01:40:49,560 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 336 flow [2024-11-23 01:40:49,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:40:49,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:49,560 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] [2024-11-23 01:40:49,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:40:49,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 01:40:49,765 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:49,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2095398909, now seen corresponding path program 1 times [2024-11-23 01:40:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:49,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449275928] [2024-11-23 01:40:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:49,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:49,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449275928] [2024-11-23 01:40:49,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449275928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:49,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569383880] [2024-11-23 01:40:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:49,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:49,842 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) [2024-11-23 01:40:49,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:40:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:49,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:40:49,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:49,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:50,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569383880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:50,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:50,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-23 01:40:50,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38878425] [2024-11-23 01:40:50,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:50,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:40:50,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:50,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:40:50,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:40:50,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:50,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 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) [2024-11-23 01:40:50,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:50,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:50,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:50,319 INFO L124 PetriNetUnfolderBase]: 540/1335 cut-off events. [2024-11-23 01:40:50,319 INFO L125 PetriNetUnfolderBase]: For 895/895 co-relation queries the response was YES. [2024-11-23 01:40:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3437 conditions, 1335 events. 540/1335 cut-off events. For 895/895 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6628 event pairs, 240 based on Foata normal form. 20/1288 useless extension candidates. Maximal degree in co-relation 1313. Up to 508 conditions per place. [2024-11-23 01:40:50,326 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 72 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2024-11-23 01:40:50,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 100 transitions, 554 flow [2024-11-23 01:40:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:40:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:40:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-11-23 01:40:50,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480093676814989 [2024-11-23 01:40:50,327 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 336 flow. Second operand 7 states and 234 transitions. [2024-11-23 01:40:50,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 100 transitions, 554 flow [2024-11-23 01:40:50,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 100 transitions, 546 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-23 01:40:50,332 INFO L231 Difference]: Finished difference. Result has 97 places, 75 transitions, 354 flow [2024-11-23 01:40:50,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2024-11-23 01:40:50,333 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2024-11-23 01:40:50,333 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 354 flow [2024-11-23 01:40:50,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 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) [2024-11-23 01:40:50,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:50,334 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:50,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 01:40:50,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:50,534 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:50,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash -330971831, now seen corresponding path program 1 times [2024-11-23 01:40:50,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:50,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281368827] [2024-11-23 01:40:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:51,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:51,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281368827] [2024-11-23 01:40:51,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281368827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:51,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043743520] [2024-11-23 01:40:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:51,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:51,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:51,705 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) [2024-11-23 01:40:51,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:40:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:51,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-23 01:40:51,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:51,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2024-11-23 01:40:51,905 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:51,915 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-23 01:40:51,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-23 01:40:51,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-23 01:40:52,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-23 01:40:52,074 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:52,085 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-23 01:40:52,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-23 01:40:52,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-23 01:40:52,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-23 01:40:52,275 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-23 01:40:52,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2024-11-23 01:40:52,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-23 01:40:52,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-23 01:40:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:52,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043743520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:53,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 31 [2024-11-23 01:40:53,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561983152] [2024-11-23 01:40:53,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:53,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-23 01:40:53,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:53,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-23 01:40:53,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 01:40:53,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:53,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 354 flow. Second operand has 33 states, 33 states have (on average 24.87878787878788) internal successors, (821), 33 states have internal predecessors, (821), 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) [2024-11-23 01:40:53,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:53,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:53,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:55,214 INFO L124 PetriNetUnfolderBase]: 1148/2803 cut-off events. [2024-11-23 01:40:55,215 INFO L125 PetriNetUnfolderBase]: For 2016/2016 co-relation queries the response was YES. [2024-11-23 01:40:55,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 2803 events. 1148/2803 cut-off events. For 2016/2016 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16423 event pairs, 161 based on Foata normal form. 40/2716 useless extension candidates. Maximal degree in co-relation 3645. Up to 643 conditions per place. [2024-11-23 01:40:55,230 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 216 selfloop transitions, 41 changer transitions 8/284 dead transitions. [2024-11-23 01:40:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 284 transitions, 1579 flow [2024-11-23 01:40:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 01:40:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-23 01:40:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 876 transitions. [2024-11-23 01:40:55,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318761384335154 [2024-11-23 01:40:55,234 INFO L175 Difference]: Start difference. First operand has 97 places, 75 transitions, 354 flow. Second operand 27 states and 876 transitions. [2024-11-23 01:40:55,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 284 transitions, 1579 flow [2024-11-23 01:40:55,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 284 transitions, 1575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:40:55,244 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 678 flow [2024-11-23 01:40:55,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=678, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2024-11-23 01:40:55,244 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 71 predicate places. [2024-11-23 01:40:55,244 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 678 flow [2024-11-23 01:40:55,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 24.87878787878788) internal successors, (821), 33 states have internal predecessors, (821), 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) [2024-11-23 01:40:55,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:55,245 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:55,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 01:40:55,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:55,449 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:55,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1441191164, now seen corresponding path program 1 times [2024-11-23 01:40:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855200159] [2024-11-23 01:40:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:56,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:40:56,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855200159] [2024-11-23 01:40:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855200159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:40:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519791064] [2024-11-23 01:40:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:40:56,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:40:56,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:40:56,394 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) [2024-11-23 01:40:56,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:40:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:40:56,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-23 01:40:56,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:40:56,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2024-11-23 01:40:56,592 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:56,604 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-23 01:40:56,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-23 01:40:56,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-23 01:40:56,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2024-11-23 01:40:56,737 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:56,745 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-23 01:40:56,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-23 01:40:56,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-23 01:40:56,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2024-11-23 01:40:56,852 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 01:40:56,860 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-23 01:40:56,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-23 01:40:56,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-23 01:40:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:56,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:40:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:40:57,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519791064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:40:57,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:40:57,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 30 [2024-11-23 01:40:57,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508707184] [2024-11-23 01:40:57,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:40:57,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 01:40:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:40:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 01:40:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2024-11-23 01:40:57,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-23 01:40:57,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 678 flow. Second operand has 31 states, 31 states have (on average 25.032258064516128) internal successors, (776), 31 states have internal predecessors, (776), 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) [2024-11-23 01:40:57,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:40:57,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-23 01:40:57,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:40:58,870 INFO L124 PetriNetUnfolderBase]: 976/2421 cut-off events. [2024-11-23 01:40:58,870 INFO L125 PetriNetUnfolderBase]: For 2779/2779 co-relation queries the response was YES. [2024-11-23 01:40:58,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 2421 events. 976/2421 cut-off events. For 2779/2779 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12857 event pairs, 146 based on Foata normal form. 30/2341 useless extension candidates. Maximal degree in co-relation 5696. Up to 884 conditions per place. [2024-11-23 01:40:58,885 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 170 selfloop transitions, 29 changer transitions 6/224 dead transitions. [2024-11-23 01:40:58,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 224 transitions, 1342 flow [2024-11-23 01:40:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 01:40:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 01:40:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 701 transitions. [2024-11-23 01:40:58,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.522354694485842 [2024-11-23 01:40:58,889 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 678 flow. Second operand 22 states and 701 transitions. [2024-11-23 01:40:58,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 224 transitions, 1342 flow [2024-11-23 01:40:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 224 transitions, 1294 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-11-23 01:40:58,900 INFO L231 Difference]: Finished difference. Result has 138 places, 94 transitions, 593 flow [2024-11-23 01:40:58,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=593, PETRI_PLACES=138, PETRI_TRANSITIONS=94} [2024-11-23 01:40:58,901 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2024-11-23 01:40:58,901 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 94 transitions, 593 flow [2024-11-23 01:40:58,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 25.032258064516128) internal successors, (776), 31 states have internal predecessors, (776), 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) [2024-11-23 01:40:58,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:40:58,902 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:40:58,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 01:40:59,106 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,SelfDestructingSolverStorable14 [2024-11-23 01:40:59,107 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-23 01:40:59,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:40:59,107 INFO L85 PathProgramCache]: Analyzing trace with hash 137357950, now seen corresponding path program 2 times [2024-11-23 01:40:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:40:59,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315900943] [2024-11-23 01:40:59,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:40:59,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:40:59,149 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:40:59,149 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:41:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:41:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:41:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315900943] [2024-11-23 01:41:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315900943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:41:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392336041] [2024-11-23 01:41:00,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:41:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:41:00,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:41:00,833 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) [2024-11-23 01:41:00,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 01:41:01,017 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:41:01,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:41:01,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-23 01:41:01,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:41:01,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2024-11-23 01:41:01,132 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-23 01:41:01,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-23 01:41:01,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-23 01:41:01,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-23 01:41:01,352 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-23 01:41:01,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-23 01:41:01,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-23 01:41:01,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-23 01:41:01,573 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-23 01:41:01,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-23 01:41:01,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-23 01:41:01,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-23 01:41:01,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-11-23 01:41:01,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2024-11-23 01:41:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:41:01,793 INFO L311 TraceCheckSpWp]: Computing backward predicates...