./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 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:03:39,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:03:39,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:03:39,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:03:39,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:03:40,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:03:40,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:03:40,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:03:40,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:03:40,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:03:40,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:03:40,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:03:40,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:03:40,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:03:40,009 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:03:40,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:03:40,012 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:03:40,012 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:03:40,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:03:40,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:03:40,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:03:40,013 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:03:40,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:03:40,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:03:40,014 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:03:40,014 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:03:40,014 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:03:40,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:03:40,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:03:40,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:03:40,015 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:03:40,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:03:40,015 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:03:40,015 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:03:40,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:40,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:03:40,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:03:40,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:03:40,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:03:40,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:03:40,016 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:03:40,016 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:03:40,016 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:03:40,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:03:40,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2024-11-10 22:03:40,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:03:40,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:03:40,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:03:40,247 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:03:40,247 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:03:40,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok.i [2024-11-10 22:03:41,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:03:41,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:03:41,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok.i [2024-11-10 22:03:41,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf15d0e2/bac7112570b6472c9123011a480ad7ce/FLAGa17f3863a [2024-11-10 22:03:42,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf15d0e2/bac7112570b6472c9123011a480ad7ce [2024-11-10 22:03:42,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:03:42,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:03:42,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:42,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:03:42,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:03:42,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e6a24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42, skipping insertion in model container [2024-11-10 22:03:42,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:03:42,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:42,497 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:03:42,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:42,660 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:03:42,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42 WrapperNode [2024-11-10 22:03:42,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:42,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:42,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:03:42,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:03:42,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,709 INFO L138 Inliner]: procedures = 274, calls = 94, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 251 [2024-11-10 22:03:42,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:42,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:03:42,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:03:42,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:03:42,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,743 INFO L175 MemorySlicer]: Split 75 memory accesses to 4 slices as follows [2, 46, 5, 22]. 61 percent of accesses are in the largest equivalence class. The 50 initializations are split as follows [2, 23, 5, 20]. The 11 writes are split as follows [0, 10, 0, 1]. [2024-11-10 22:03:42,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,752 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:03:42,764 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:03:42,764 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:03:42,764 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:03:42,765 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (1/1) ... [2024-11-10 22:03:42,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:42,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:42,806 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) [2024-11-10 22:03:42,809 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 [2024-11-10 22:03:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 22:03:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 22:03:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 22:03:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 22:03:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:03:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:03:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:03:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:03:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:03:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:03:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:03:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:03:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:03:42,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:03:42,857 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:03:42,988 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:03:42,990 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:03:43,352 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:03:43,353 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:03:43,609 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:03:43,610 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:03:43,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:03:43 BoogieIcfgContainer [2024-11-10 22:03:43,611 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:03:43,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:03:43,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:03:43,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:03:43,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:03:42" (1/3) ... [2024-11-10 22:03:43,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131931a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:03:43, skipping insertion in model container [2024-11-10 22:03:43,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:42" (2/3) ... [2024-11-10 22:03:43,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131931a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:03:43, skipping insertion in model container [2024-11-10 22:03:43,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:03:43" (3/3) ... [2024-11-10 22:03:43,618 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2024-11-10 22:03:43,631 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:03:43,632 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-10 22:03:43,632 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:03:43,677 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:03:43,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 67 transitions, 148 flow [2024-11-10 22:03:43,733 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2024-11-10 22:03:43,733 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:03:43,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2024-11-10 22:03:43,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 67 transitions, 148 flow [2024-11-10 22:03:43,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 63 transitions, 135 flow [2024-11-10 22:03:43,750 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:03:43,756 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;@218d1964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:03:43,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-10 22:03:43,764 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:03:43,765 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-10 22:03:43,765 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:03:43,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:43,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:43,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:43,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash 509938198, now seen corresponding path program 1 times [2024-11-10 22:03:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664847110] [2024-11-10 22:03:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:44,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:44,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664847110] [2024-11-10 22:03:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664847110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:03:44,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775853193] [2024-11-10 22:03:44,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:44,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:44,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:03:44,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-10 22:03:44,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:44,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:03:44,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:44,763 INFO L124 PetriNetUnfolderBase]: 1021/2163 cut-off events. [2024-11-10 22:03:44,764 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-10 22:03:44,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 2163 events. 1021/2163 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14562 event pairs, 210 based on Foata normal form. 122/1976 useless extension candidates. Maximal degree in co-relation 3662. Up to 1033 conditions per place. [2024-11-10 22:03:44,784 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 73 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-10 22:03:44,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 103 transitions, 380 flow [2024-11-10 22:03:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-10 22:03:44,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2024-11-10 22:03:44,799 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 135 flow. Second operand 4 states and 192 transitions. [2024-11-10 22:03:44,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 103 transitions, 380 flow [2024-11-10 22:03:44,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 371 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:44,809 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 164 flow [2024-11-10 22:03:44,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2024-11-10 22:03:44,817 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-10 22:03:44,818 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 164 flow [2024-11-10 22:03:44,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-10 22:03:44,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:44,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:44,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:03:44,819 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:44,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1371784458, now seen corresponding path program 1 times [2024-11-10 22:03:44,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:44,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915536383] [2024-11-10 22:03:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:44,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:45,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:45,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915536383] [2024-11-10 22:03:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915536383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:45,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:45,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:03:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677001392] [2024-11-10 22:03:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:45,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:45,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:45,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:03:45,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-10 22:03:45,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:45,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:03:45,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:45,392 INFO L124 PetriNetUnfolderBase]: 1016/2172 cut-off events. [2024-11-10 22:03:45,392 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2024-11-10 22:03:45,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 2172 events. 1016/2172 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14597 event pairs, 214 based on Foata normal form. 42/1961 useless extension candidates. Maximal degree in co-relation 2528. Up to 1122 conditions per place. [2024-11-10 22:03:45,402 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 81 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2024-11-10 22:03:45,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 112 transitions, 443 flow [2024-11-10 22:03:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-10 22:03:45,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6686567164179105 [2024-11-10 22:03:45,406 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 164 flow. Second operand 5 states and 224 transitions. [2024-11-10 22:03:45,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 112 transitions, 443 flow [2024-11-10 22:03:45,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:03:45,409 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 182 flow [2024-11-10 22:03:45,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-11-10 22:03:45,410 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2024-11-10 22:03:45,410 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 182 flow [2024-11-10 22:03:45,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-10 22:03:45,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:45,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:45,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:03:45,411 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:45,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash 270116602, now seen corresponding path program 1 times [2024-11-10 22:03:45,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:45,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496300105] [2024-11-10 22:03:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:45,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496300105] [2024-11-10 22:03:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496300105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:45,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:45,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210727522] [2024-11-10 22:03:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:45,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:45,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:45,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:03:45,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-10 22:03:45,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:45,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:03:45,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:46,097 INFO L124 PetriNetUnfolderBase]: 1247/2605 cut-off events. [2024-11-10 22:03:46,097 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2024-11-10 22:03:46,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5047 conditions, 2605 events. 1247/2605 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17515 event pairs, 196 based on Foata normal form. 42/2296 useless extension candidates. Maximal degree in co-relation 3368. Up to 1067 conditions per place. [2024-11-10 22:03:46,112 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 117 selfloop transitions, 14 changer transitions 0/156 dead transitions. [2024-11-10 22:03:46,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 156 transitions, 647 flow [2024-11-10 22:03:46,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:03:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:03:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 321 transitions. [2024-11-10 22:03:46,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6844349680170576 [2024-11-10 22:03:46,117 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 182 flow. Second operand 7 states and 321 transitions. [2024-11-10 22:03:46,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 156 transitions, 647 flow [2024-11-10 22:03:46,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 156 transitions, 634 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:46,122 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 265 flow [2024-11-10 22:03:46,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=265, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-10 22:03:46,123 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-11-10 22:03:46,124 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 265 flow [2024-11-10 22:03:46,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-10 22:03:46,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:46,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:46,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:03:46,124 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:46,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash -38342101, now seen corresponding path program 1 times [2024-11-10 22:03:46,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:46,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391851499] [2024-11-10 22:03:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:46,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:46,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:46,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391851499] [2024-11-10 22:03:46,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391851499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:46,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:46,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:03:46,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917584947] [2024-11-10 22:03:46,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:46,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:03:46,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:03:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:03:46,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-10 22:03:46,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-10 22:03:46,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:46,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-10 22:03:46,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:46,347 INFO L124 PetriNetUnfolderBase]: 530/1254 cut-off events. [2024-11-10 22:03:46,347 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2024-11-10 22:03:46,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2609 conditions, 1254 events. 530/1254 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7577 event pairs, 311 based on Foata normal form. 33/1200 useless extension candidates. Maximal degree in co-relation 2527. Up to 537 conditions per place. [2024-11-10 22:03:46,353 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 43 selfloop transitions, 2 changer transitions 6/79 dead transitions. [2024-11-10 22:03:46,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 345 flow [2024-11-10 22:03:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:03:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:03:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-11-10 22:03:46,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6567164179104478 [2024-11-10 22:03:46,355 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 265 flow. Second operand 3 states and 132 transitions. [2024-11-10 22:03:46,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 345 flow [2024-11-10 22:03:46,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 327 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 22:03:46,361 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 208 flow [2024-11-10 22:03:46,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-10 22:03:46,361 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2024-11-10 22:03:46,362 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 208 flow [2024-11-10 22:03:46,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-10 22:03:46,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:46,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:46,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:03:46,362 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:46,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash -216319333, now seen corresponding path program 1 times [2024-11-10 22:03:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:46,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238324889] [2024-11-10 22:03:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:46,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:46,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238324889] [2024-11-10 22:03:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238324889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:46,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:46,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136885428] [2024-11-10 22:03:46,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:46,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:46,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:03:46,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-10 22:03:46,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:46,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:03:46,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:46,796 INFO L124 PetriNetUnfolderBase]: 520/1200 cut-off events. [2024-11-10 22:03:46,797 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-10 22:03:46,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 1200 events. 520/1200 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7066 event pairs, 179 based on Foata normal form. 12/1114 useless extension candidates. Maximal degree in co-relation 2311. Up to 503 conditions per place. [2024-11-10 22:03:46,803 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 72 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2024-11-10 22:03:46,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 450 flow [2024-11-10 22:03:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-11-10 22:03:46,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599502487562189 [2024-11-10 22:03:46,805 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 208 flow. Second operand 6 states and 241 transitions. [2024-11-10 22:03:46,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 450 flow [2024-11-10 22:03:46,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 104 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:46,808 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 214 flow [2024-11-10 22:03:46,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-10 22:03:46,809 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 15 predicate places. [2024-11-10 22:03:46,810 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 214 flow [2024-11-10 22:03:46,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-10 22:03:46,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:46,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:46,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:03:46,810 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:46,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash -216320326, now seen corresponding path program 1 times [2024-11-10 22:03:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:46,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053924482] [2024-11-10 22:03:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:46,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053924482] [2024-11-10 22:03:46,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053924482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:46,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:46,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:46,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979759588] [2024-11-10 22:03:46,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:46,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:46,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-10 22:03:46,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-11-10 22:03:46,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:46,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-10 22:03:46,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:47,017 INFO L124 PetriNetUnfolderBase]: 470/1042 cut-off events. [2024-11-10 22:03:47,018 INFO L125 PetriNetUnfolderBase]: For 316/325 co-relation queries the response was YES. [2024-11-10 22:03:47,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 1042 events. 470/1042 cut-off events. For 316/325 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5486 event pairs, 323 based on Foata normal form. 24/1002 useless extension candidates. Maximal degree in co-relation 2100. Up to 645 conditions per place. [2024-11-10 22:03:47,025 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 55 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-10 22:03:47,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 82 transitions, 361 flow [2024-11-10 22:03:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-10 22:03:47,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-11-10 22:03:47,026 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 214 flow. Second operand 4 states and 164 transitions. [2024-11-10 22:03:47,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 82 transitions, 361 flow [2024-11-10 22:03:47,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 348 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 22:03:47,029 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 220 flow [2024-11-10 22:03:47,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-11-10 22:03:47,030 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 16 predicate places. [2024-11-10 22:03:47,031 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 220 flow [2024-11-10 22:03:47,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-11-10 22:03:47,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:47,031 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:47,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:03:47,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:47,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -236500248, now seen corresponding path program 1 times [2024-11-10 22:03:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:47,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039524092] [2024-11-10 22:03:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039524092] [2024-11-10 22:03:47,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039524092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:47,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:47,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048484285] [2024-11-10 22:03:47,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:47,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:47,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:47,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:47,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-10 22:03:47,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2024-11-10 22:03:47,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:47,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-10 22:03:47,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:47,451 INFO L124 PetriNetUnfolderBase]: 413/1001 cut-off events. [2024-11-10 22:03:47,451 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-10 22:03:47,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 1001 events. 413/1001 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5356 event pairs, 118 based on Foata normal form. 12/970 useless extension candidates. Maximal degree in co-relation 1610. Up to 484 conditions per place. [2024-11-10 22:03:47,457 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 56 selfloop transitions, 5 changer transitions 3/91 dead transitions. [2024-11-10 22:03:47,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 400 flow [2024-11-10 22:03:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-10 22:03:47,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6179104477611941 [2024-11-10 22:03:47,459 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 220 flow. Second operand 5 states and 207 transitions. [2024-11-10 22:03:47,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 400 flow [2024-11-10 22:03:47,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 393 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:47,461 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 220 flow [2024-11-10 22:03:47,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-10 22:03:47,462 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 18 predicate places. [2024-11-10 22:03:47,462 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 220 flow [2024-11-10 22:03:47,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 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) [2024-11-10 22:03:47,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:47,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:47,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:03:47,463 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:47,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1555262802, now seen corresponding path program 1 times [2024-11-10 22:03:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62151159] [2024-11-10 22:03:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:47,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:48,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:48,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62151159] [2024-11-10 22:03:48,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62151159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:48,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600553177] [2024-11-10 22:03:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:48,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:48,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:48,040 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) [2024-11-10 22:03:48,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:03:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:48,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-10 22:03:48,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:48,284 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 [2024-11-10 22:03:48,326 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 [2024-11-10 22:03:48,393 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 [2024-11-10 22:03:48,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:03:48,405 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 [2024-11-10 22:03:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:48,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:48,702 INFO L349 Elim1Store]: treesize reduction 47, result has 53.5 percent of original size [2024-11-10 22:03:48,702 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 [2024-11-10 22:03:48,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:03:48,731 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 [2024-11-10 22:03:48,792 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 [2024-11-10 22:03:48,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:03:48,824 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 [2024-11-10 22:03:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:49,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600553177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:49,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:49,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-10 22:03:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410944459] [2024-11-10 22:03:49,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:49,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:03:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:03:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:03:49,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-11-10 22:03:49,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 220 flow. Second operand has 19 states, 19 states have (on average 26.210526315789473) internal successors, (498), 19 states have internal predecessors, (498), 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) [2024-11-10 22:03:49,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:49,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-11-10 22:03:49,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:49,877 INFO L124 PetriNetUnfolderBase]: 784/1773 cut-off events. [2024-11-10 22:03:49,877 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2024-11-10 22:03:49,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 1773 events. 784/1773 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10142 event pairs, 123 based on Foata normal form. 24/1688 useless extension candidates. Maximal degree in co-relation 3039. Up to 250 conditions per place. [2024-11-10 22:03:49,887 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 128 selfloop transitions, 17 changer transitions 3/170 dead transitions. [2024-11-10 22:03:49,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 170 transitions, 770 flow [2024-11-10 22:03:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:03:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:03:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 483 transitions. [2024-11-10 22:03:49,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5149253731343284 [2024-11-10 22:03:49,889 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 220 flow. Second operand 14 states and 483 transitions. [2024-11-10 22:03:49,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 170 transitions, 770 flow [2024-11-10 22:03:49,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 760 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:03:49,892 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 281 flow [2024-11-10 22:03:49,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=281, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-11-10 22:03:49,893 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2024-11-10 22:03:49,893 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 281 flow [2024-11-10 22:03:49,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 26.210526315789473) internal successors, (498), 19 states have internal predecessors, (498), 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) [2024-11-10 22:03:49,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:49,894 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:49,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:03:50,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:50,095 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:03:50,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash -968506018, now seen corresponding path program 1 times [2024-11-10 22:03:50,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:50,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777059147] [2024-11-10 22:03:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:50,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777059147] [2024-11-10 22:03:50,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777059147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:50,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648144894] [2024-11-10 22:03:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:50,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:50,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:50,607 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) [2024-11-10 22:03:50,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:03:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:50,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-10 22:03:50,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:50,715 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 25 treesize of output 7 [2024-11-10 22:03:50,791 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-10 22:03:50,792 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 [2024-11-10 22:03:50,843 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 30 treesize of output 14 [2024-11-10 22:03:50,912 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 [2024-11-10 22:03:50,959 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 [2024-11-10 22:03:50,972 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 [2024-11-10 22:03:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:50,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:52,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648144894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:52,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:52,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-10 22:03:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543360466] [2024-11-10 22:03:52,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:52,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:03:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:52,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:03:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=265, Unknown=1, NotChecked=0, Total=342 [2024-11-10 22:03:53,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:03:56,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:03:56,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 67 [2024-11-10 22:03:56,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 281 flow. Second operand has 19 states, 19 states have (on average 25.42105263157895) internal successors, (483), 19 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:56,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:56,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 67 [2024-11-10 22:03:56,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:00,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:01,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:03,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:04,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:06,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:07,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:09,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:10,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:12,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:13,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:14,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:17,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:19,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:19,399 INFO L124 PetriNetUnfolderBase]: 1659/3715 cut-off events. [2024-11-10 22:04:19,399 INFO L125 PetriNetUnfolderBase]: For 1224/1226 co-relation queries the response was YES. [2024-11-10 22:04:19,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 3715 events. 1659/3715 cut-off events. For 1224/1226 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 24443 event pairs, 186 based on Foata normal form. 48/3595 useless extension candidates. Maximal degree in co-relation 6989. Up to 1145 conditions per place. [2024-11-10 22:04:19,432 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 190 selfloop transitions, 27 changer transitions 4/242 dead transitions. [2024-11-10 22:04:19,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 242 transitions, 1209 flow [2024-11-10 22:04:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 22:04:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 22:04:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 581 transitions. [2024-11-10 22:04:19,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5419776119402985 [2024-11-10 22:04:19,435 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 281 flow. Second operand 16 states and 581 transitions. [2024-11-10 22:04:19,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 242 transitions, 1209 flow [2024-11-10 22:04:19,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 242 transitions, 1178 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-10 22:04:19,443 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 483 flow [2024-11-10 22:04:19,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=483, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2024-11-10 22:04:19,444 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-11-10 22:04:19,445 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 483 flow [2024-11-10 22:04:19,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.42105263157895) internal successors, (483), 19 states have internal predecessors, (483), 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) [2024-11-10 22:04:19,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:19,445 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:19,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:04:19,646 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,SelfDestructingSolverStorable8 [2024-11-10 22:04:19,646 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:19,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1273640802, now seen corresponding path program 1 times [2024-11-10 22:04:19,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:19,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612662233] [2024-11-10 22:04:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:19,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612662233] [2024-11-10 22:04:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612662233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288840404] [2024-11-10 22:04:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:20,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:20,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:20,073 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) [2024-11-10 22:04:20,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:04:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:20,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 22:04:20,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:20,305 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 [2024-11-10 22:04:20,355 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-10 22:04:20,356 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 [2024-11-10 22:04:20,387 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 [2024-11-10 22:04:20,401 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 [2024-11-10 22:04:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:20,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:20,600 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-10 22:04:20,600 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 [2024-11-10 22:04:20,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:04:20,611 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 [2024-11-10 22:04:20,634 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 [2024-11-10 22:04:20,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:04:20,646 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 [2024-11-10 22:04:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:20,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288840404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:20,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:20,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 21 [2024-11-10 22:04:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758290074] [2024-11-10 22:04:20,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:20,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:04:20,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:04:20,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:04:20,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-10 22:04:20,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 483 flow. Second operand has 22 states, 22 states have (on average 28.136363636363637) internal successors, (619), 22 states have internal predecessors, (619), 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) [2024-11-10 22:04:20,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:20,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-10 22:04:20,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:21,624 INFO L124 PetriNetUnfolderBase]: 1464/3477 cut-off events. [2024-11-10 22:04:21,624 INFO L125 PetriNetUnfolderBase]: For 2464/2466 co-relation queries the response was YES. [2024-11-10 22:04:21,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 3477 events. 1464/3477 cut-off events. For 2464/2466 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23496 event pairs, 207 based on Foata normal form. 48/3350 useless extension candidates. Maximal degree in co-relation 7001. Up to 1292 conditions per place. [2024-11-10 22:04:21,639 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 97 selfloop transitions, 38 changer transitions 3/162 dead transitions. [2024-11-10 22:04:21,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 162 transitions, 929 flow [2024-11-10 22:04:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 22:04:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 22:04:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 422 transitions. [2024-11-10 22:04:21,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5248756218905473 [2024-11-10 22:04:21,641 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 483 flow. Second operand 12 states and 422 transitions. [2024-11-10 22:04:21,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 162 transitions, 929 flow [2024-11-10 22:04:21,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 162 transitions, 911 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-10 22:04:21,649 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 537 flow [2024-11-10 22:04:21,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=537, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2024-11-10 22:04:21,649 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 47 predicate places. [2024-11-10 22:04:21,649 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 537 flow [2024-11-10 22:04:21,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 28.136363636363637) internal successors, (619), 22 states have internal predecessors, (619), 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) [2024-11-10 22:04:21,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:21,650 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:21,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:04:21,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:21,851 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:21,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash 828158802, now seen corresponding path program 1 times [2024-11-10 22:04:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:21,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030205516] [2024-11-10 22:04:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:21,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:21,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030205516] [2024-11-10 22:04:21,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030205516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:21,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908342629] [2024-11-10 22:04:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:21,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:21,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:21,915 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) [2024-11-10 22:04:21,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:04:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:22,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:04:22,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:22,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:04:22,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908342629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:22,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:04:22,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:04:22,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646655755] [2024-11-10 22:04:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:22,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:04:22,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:04:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:04:22,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-10 22:04:22,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 94 transitions, 537 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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) [2024-11-10 22:04:22,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:22,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-10 22:04:22,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:22,428 INFO L124 PetriNetUnfolderBase]: 1496/3461 cut-off events. [2024-11-10 22:04:22,429 INFO L125 PetriNetUnfolderBase]: For 3478/3478 co-relation queries the response was YES. [2024-11-10 22:04:22,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 3461 events. 1496/3461 cut-off events. For 3478/3478 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 22867 event pairs, 221 based on Foata normal form. 62/3289 useless extension candidates. Maximal degree in co-relation 7402. Up to 2033 conditions per place. [2024-11-10 22:04:22,448 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 90 selfloop transitions, 9 changer transitions 3/125 dead transitions. [2024-11-10 22:04:22,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 125 transitions, 823 flow [2024-11-10 22:04:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:04:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:04:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-11-10 22:04:22,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696517412935324 [2024-11-10 22:04:22,450 INFO L175 Difference]: Start difference. First operand has 108 places, 94 transitions, 537 flow. Second operand 6 states and 229 transitions. [2024-11-10 22:04:22,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 125 transitions, 823 flow [2024-11-10 22:04:22,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 125 transitions, 757 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-11-10 22:04:22,459 INFO L231 Difference]: Finished difference. Result has 103 places, 93 transitions, 485 flow [2024-11-10 22:04:22,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=103, PETRI_TRANSITIONS=93} [2024-11-10 22:04:22,459 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-11-10 22:04:22,459 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 93 transitions, 485 flow [2024-11-10 22:04:22,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 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) [2024-11-10 22:04:22,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:22,460 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:22,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:04:22,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:22,665 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:22,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash 828159795, now seen corresponding path program 1 times [2024-11-10 22:04:22,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:22,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187754150] [2024-11-10 22:04:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:22,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:22,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187754150] [2024-11-10 22:04:22,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187754150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:22,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841842568] [2024-11-10 22:04:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:22,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:22,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:22,988 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) [2024-11-10 22:04:22,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:04:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:23,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-10 22:04:23,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:23,097 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 35 treesize of output 9 [2024-11-10 22:04:23,149 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:23,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:04:23,167 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2024-11-10 22:04:23,167 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 [2024-11-10 22:04:23,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:04:23,206 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:23,208 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:23,209 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 38 treesize of output 16 [2024-11-10 22:04:23,256 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 [2024-11-10 22:04:23,295 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-10 22:04:23,295 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 [2024-11-10 22:04:23,315 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 [2024-11-10 22:04:23,322 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 [2024-11-10 22:04:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:23,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841842568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:23,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 19 [2024-11-10 22:04:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323290966] [2024-11-10 22:04:23,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:23,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 22:04:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:23,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 22:04:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-10 22:04:23,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:04:23,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 485 flow. Second operand has 21 states, 21 states have (on average 29.095238095238095) internal successors, (611), 21 states have internal predecessors, (611), 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) [2024-11-10 22:04:23,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:23,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:04:23,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:24,872 INFO L124 PetriNetUnfolderBase]: 1738/4229 cut-off events. [2024-11-10 22:04:24,872 INFO L125 PetriNetUnfolderBase]: For 3922/3922 co-relation queries the response was YES. [2024-11-10 22:04:24,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10287 conditions, 4229 events. 1738/4229 cut-off events. For 3922/3922 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 30240 event pairs, 247 based on Foata normal form. 60/4074 useless extension candidates. Maximal degree in co-relation 8663. Up to 858 conditions per place. [2024-11-10 22:04:24,894 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 192 selfloop transitions, 42 changer transitions 3/261 dead transitions. [2024-11-10 22:04:24,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 261 transitions, 1473 flow [2024-11-10 22:04:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:04:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:04:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 728 transitions. [2024-11-10 22:04:24,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5718774548311076 [2024-11-10 22:04:24,896 INFO L175 Difference]: Start difference. First operand has 103 places, 93 transitions, 485 flow. Second operand 19 states and 728 transitions. [2024-11-10 22:04:24,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 261 transitions, 1473 flow [2024-11-10 22:04:24,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 261 transitions, 1464 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:24,907 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 690 flow [2024-11-10 22:04:24,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=690, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2024-11-10 22:04:24,907 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2024-11-10 22:04:24,907 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 690 flow [2024-11-10 22:04:24,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 29.095238095238095) internal successors, (611), 21 states have internal predecessors, (611), 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) [2024-11-10 22:04:24,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:24,908 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:24,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:04:25,108 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 [2024-11-10 22:04:25,109 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:25,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash -96880315, now seen corresponding path program 1 times [2024-11-10 22:04:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:25,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067139350] [2024-11-10 22:04:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:25,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:04:25,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:25,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067139350] [2024-11-10 22:04:25,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067139350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:25,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:25,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:25,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53580918] [2024-11-10 22:04:25,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:25,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:25,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-10 22:04:25,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:25,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:25,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-10 22:04:25,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:25,487 INFO L124 PetriNetUnfolderBase]: 1844/4257 cut-off events. [2024-11-10 22:04:25,487 INFO L125 PetriNetUnfolderBase]: For 5424/5424 co-relation queries the response was YES. [2024-11-10 22:04:25,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11106 conditions, 4257 events. 1844/4257 cut-off events. For 5424/5424 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 29755 event pairs, 1006 based on Foata normal form. 86/4085 useless extension candidates. Maximal degree in co-relation 10835. Up to 2014 conditions per place. [2024-11-10 22:04:25,510 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 80 selfloop transitions, 19 changer transitions 0/122 dead transitions. [2024-11-10 22:04:25,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 925 flow [2024-11-10 22:04:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-10 22:04:25,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5746268656716418 [2024-11-10 22:04:25,512 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 690 flow. Second operand 4 states and 154 transitions. [2024-11-10 22:04:25,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 925 flow [2024-11-10 22:04:25,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 862 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-10 22:04:25,529 INFO L231 Difference]: Finished difference. Result has 117 places, 107 transitions, 661 flow [2024-11-10 22:04:25,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=661, PETRI_PLACES=117, PETRI_TRANSITIONS=107} [2024-11-10 22:04:25,530 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 56 predicate places. [2024-11-10 22:04:25,530 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 107 transitions, 661 flow [2024-11-10 22:04:25,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:25,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:25,531 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:25,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:04:25,531 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:25,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1223021045, now seen corresponding path program 1 times [2024-11-10 22:04:25,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:25,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850389930] [2024-11-10 22:04:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:25,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:25,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850389930] [2024-11-10 22:04:25,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850389930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:25,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382004693] [2024-11-10 22:04:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:25,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:25,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:25,586 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) [2024-11-10 22:04:25,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:04:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:25,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:04:25,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:25,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:25,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382004693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:25,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:25,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 22:04:25,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797307524] [2024-11-10 22:04:25,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:25,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:04:25,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:04:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:04:25,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-10 22:04:25,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 661 flow. Second operand has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 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) [2024-11-10 22:04:25,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:25,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-10 22:04:25,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:26,163 INFO L124 PetriNetUnfolderBase]: 1664/3845 cut-off events. [2024-11-10 22:04:26,163 INFO L125 PetriNetUnfolderBase]: For 5251/5251 co-relation queries the response was YES. [2024-11-10 22:04:26,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10242 conditions, 3845 events. 1664/3845 cut-off events. For 5251/5251 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 26304 event pairs, 790 based on Foata normal form. 38/3680 useless extension candidates. Maximal degree in co-relation 10008. Up to 1562 conditions per place. [2024-11-10 22:04:26,185 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 107 selfloop transitions, 13 changer transitions 0/143 dead transitions. [2024-11-10 22:04:26,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 143 transitions, 1005 flow [2024-11-10 22:04:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:04:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:04:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-11-10 22:04:26,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5692963752665245 [2024-11-10 22:04:26,187 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 661 flow. Second operand 7 states and 267 transitions. [2024-11-10 22:04:26,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 143 transitions, 1005 flow [2024-11-10 22:04:26,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 143 transitions, 973 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:26,201 INFO L231 Difference]: Finished difference. Result has 124 places, 106 transitions, 685 flow [2024-11-10 22:04:26,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=685, PETRI_PLACES=124, PETRI_TRANSITIONS=106} [2024-11-10 22:04:26,202 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 63 predicate places. [2024-11-10 22:04:26,202 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 106 transitions, 685 flow [2024-11-10 22:04:26,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 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) [2024-11-10 22:04:26,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:26,202 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:26,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:04:26,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:26,404 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:26,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1466005300, now seen corresponding path program 1 times [2024-11-10 22:04:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:26,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024901892] [2024-11-10 22:04:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024901892] [2024-11-10 22:04:27,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024901892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314938004] [2024-11-10 22:04:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:27,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:27,084 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) [2024-11-10 22:04:27,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:04:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:27,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-10 22:04:27,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:27,205 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 29 treesize of output 19 [2024-11-10 22:04:27,255 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:27,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:04:27,271 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2024-11-10 22:04:27,272 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 [2024-11-10 22:04:27,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 22:04:27,307 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:27,307 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 38 treesize of output 31 [2024-11-10 22:04:27,358 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 [2024-11-10 22:04:27,392 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:27,398 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-10 22:04:27,399 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 [2024-11-10 22:04:27,421 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 [2024-11-10 22:04:27,453 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 [2024-11-10 22:04:27,478 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:27,483 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-10 22:04:27,484 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 [2024-11-10 22:04:27,517 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 [2024-11-10 22:04:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314938004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:27,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:27,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 31 [2024-11-10 22:04:27,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107708661] [2024-11-10 22:04:27,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:27,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 22:04:27,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:27,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 22:04:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2024-11-10 22:04:27,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:04:27,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 106 transitions, 685 flow. Second operand has 32 states, 32 states have (on average 28.96875) internal successors, (927), 32 states have internal predecessors, (927), 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) [2024-11-10 22:04:27,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:27,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:04:27,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:29,700 INFO L124 PetriNetUnfolderBase]: 1002/2399 cut-off events. [2024-11-10 22:04:29,700 INFO L125 PetriNetUnfolderBase]: For 3734/3734 co-relation queries the response was YES. [2024-11-10 22:04:29,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6435 conditions, 2399 events. 1002/2399 cut-off events. For 3734/3734 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13239 event pairs, 143 based on Foata normal form. 48/2341 useless extension candidates. Maximal degree in co-relation 6412. Up to 511 conditions per place. [2024-11-10 22:04:29,713 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 203 selfloop transitions, 29 changer transitions 3/257 dead transitions. [2024-11-10 22:04:29,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 257 transitions, 1403 flow [2024-11-10 22:04:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 22:04:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 22:04:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 859 transitions. [2024-11-10 22:04:29,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574302401038287 [2024-11-10 22:04:29,716 INFO L175 Difference]: Start difference. First operand has 124 places, 106 transitions, 685 flow. Second operand 23 states and 859 transitions. [2024-11-10 22:04:29,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 257 transitions, 1403 flow [2024-11-10 22:04:29,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 257 transitions, 1347 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-11-10 22:04:29,724 INFO L231 Difference]: Finished difference. Result has 130 places, 86 transitions, 502 flow [2024-11-10 22:04:29,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=502, PETRI_PLACES=130, PETRI_TRANSITIONS=86} [2024-11-10 22:04:29,725 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 69 predicate places. [2024-11-10 22:04:29,725 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 86 transitions, 502 flow [2024-11-10 22:04:29,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 28.96875) internal successors, (927), 32 states have internal predecessors, (927), 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) [2024-11-10 22:04:29,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:29,725 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:29,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:04:29,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:29,930 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:29,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash 945271854, now seen corresponding path program 2 times [2024-11-10 22:04:29,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:29,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362805116] [2024-11-10 22:04:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:29,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:31,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:31,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362805116] [2024-11-10 22:04:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362805116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:31,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113730487] [2024-11-10 22:04:31,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:04:31,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:31,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:31,487 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) [2024-11-10 22:04:31,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:04:31,615 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:04:31,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:04:31,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-10 22:04:31,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:31,635 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 25 treesize of output 7 [2024-11-10 22:04:31,696 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-10 22:04:31,696 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 [2024-11-10 22:04:31,752 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 30 treesize of output 14 [2024-11-10 22:04:31,828 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 [2024-11-10 22:04:31,884 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-10 22:04:31,885 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 [2024-11-10 22:04:31,930 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 [2024-11-10 22:04:32,000 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 [2024-11-10 22:04:32,066 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-10 22:04:32,066 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 [2024-11-10 22:04:32,145 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 [2024-11-10 22:04:32,229 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 [2024-11-10 22:04:32,280 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 [2024-11-10 22:04:32,283 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 [2024-11-10 22:04:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:32,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:56,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113730487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:56,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:56,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 41 [2024-11-10 22:04:56,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660562966] [2024-11-10 22:04:56,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:56,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-10 22:04:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-10 22:04:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1424, Unknown=9, NotChecked=0, Total=1806 [2024-11-10 22:05:00,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:05:03,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:05:03,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 67 [2024-11-10 22:05:03,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 86 transitions, 502 flow. Second operand has 43 states, 43 states have (on average 25.186046511627907) internal successors, (1083), 43 states have internal predecessors, (1083), 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) [2024-11-10 22:05:03,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:05:03,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 67 [2024-11-10 22:05:03,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand